Sub-52 women — Athlete-specific time-gain maps for Joanna Wietrzyk and Lauren Weeks
Executive brief: Sub52 is not one missing split. It is a distributed gain across running, fixed work, and execution.
Executive Conclusion
This brief separates the two top current women into two different Sub52 projects. The athlete in first place is not chasing the same seconds as the athlete in second. Joanna Wietrzyk has the current station-side and finishing profile; Lauren Weeks has the current run-side and burpee profile. The first 51:xx likely requires one of them to absorb the other athlete's best trait without losing her own.
| Athlete | Warsaw 2026 | Run total | Official non-run* | Time to 51:59.99 | Primary Sub52 question |
| Joanna Wietrzyk | 54:25.08 | 30:23 | 24:02 | -2:25 | Can she compress the run side and burpees while keeping the closing-station edge? |
| Lauren Weeks | 54:54.09 | 29:52 | 25:02 | -2:54 | Can she make a 2-minute-plus station/non-run jump while protecting the fastest run total? |
* Official non-run = official overall time minus official run total. Station splits in the uploaded HYROX summaries are rounded, so exact station-split sums can differ by a few seconds from official non-run total.
Core takeaways
- Joanna is the cleaner Sub52 shape right now because she already owns the late-race strength and finishing stations. Her biggest visible time pocket is not wall balls or lunges; it is the run-side total plus burpee broad jump rhythm.
- Lauren is the faster run-side athlete right now. Her Sub52 problem is bigger because the station/non-run side needs a far larger jump than simply matching Joanna's current stronger station splits.
- For both athletes, the science supports a run-led interpretation of HYROX performance, but Warsaw shows that fixed-work compression and wall-ball composure still decide the final minute.
- This is a coaching-style model, not a prediction or private training assessment. Public background information is limited; training implications are inferred from public race splits and public athlete profiles.
Evidence base and method
How the time model works
- Sub52 is treated as 51:59.99.
- Run total is the official HYROX run total in the athlete summary, not a manually reconstructed run total.
- Non-run is calculated as official overall time minus official run total. This bundles stations, ROXZONE movement, and any timing rounding into one race-relevant bucket.
- Station splits are used for directional diagnosis: where the athlete is already elite, where the head-to-head gap exists, and where training may produce the most return.
- Potential time gains are intentionally expressed as bands or budgets. At this level, a precise second-by-second prescription would be false precision.
Scientific context
The first peer-reviewed HYROX physiology study reported that faster completion correlated with higher VO2max, greater endurance training volume, and lower body-fat percentage. It also found that wall balls produced the highest HR, blood lactate, and perceived exertion values. In simple coaching language: the sport is endurance-led, but the finish is still a physiological choke point.
The official HYROX Singles Rulebook defines the race as 8 x 1 km running alternating with 8 workout stations, which means every performance model has to account for run economy under station fatigue and station execution under accumulated running fatigue.
Figure 1. Positive bars mean Lauren was slower than Joanna in that split; negative bars mean Lauren was faster. The official non-run gap is approximately 60 seconds in Joanna's favor, while Lauren owns a 31-second run-total advantage and a 24-second burpee broad jump advantage.
Athlete 1: Joanna Wietrzyk
Current profile: station-dominant, elite finisher, still with visible run-side and burpee upside.
Joanna is an Australian HYROX Elite 15 athlete who came from national-level tennis, netball, and F45 coaching. That background matters because it points to repeat-sprint competitiveness, change-of-direction athleticism, comfort with mixed-modal gym work, and an unusually fast adaptation curve into HYROX. The public profile also emphasizes her rapid rise and 2025 World Championship podium trajectory.
| Metric | Warsaw value | Place / note | Interpretation |
| Overall | 54:25.08 | Rank 1 | Current benchmark. Needs 2:25.09 for Sub52. |
| Run total | 30:23 | Place 2 | Strong, but 31 seconds behind Lauren. This is the largest visible lever. |
| Best run lap | 3:15 | Place 2 | Fast enough at the end to suggest late-race composure; the project is total run compression, not one heroic lap. |
| Sled push | 2:11 | Place 8 | Good head-to-head vs Lauren, but still a time pocket by place. |
| Sled pull | 3:00 | Place 3 | Clear strength-execution edge. |
| Burpee broad jump | 2:57 | Place 4 | Main station-side gap vs Lauren: 24 seconds. |
| Sandbag lunges | 2:43 | Place 1 | Late-race strength and posture are already world-class. |
| Wall balls | 3:20 | Place 1 | Finishing composure is the clearest current weapon. |
Where Joanna can gain the most time
Figure 2. Joanna needs roughly 145 seconds for Sub52. This budget assumes a balanced project: meaningful run compression, burpee improvement, small sled/erg gains, and a still-clean finish.
Priority map for Joanna
| Priority | Time pocket | Why it matters | Likely training emphasis |
| 1 | Run total: 45-65 sec | She is already elite, but Lauren currently owns 31 seconds on official run total. Sub52 probably requires Joanna near 29:25-29:35, not just a stronger final lap. | Compromised running economy, threshold durability, middle-race run consistency after sleds/burpees/row. |
| 2 | Burpee broad jump: 15-22 sec | This is the clearest head-to-head station gap. Lauren was 2:33, Joanna 2:57. | Cadence, footwork, landing mechanics, breathing rhythm, and fast transitions from the last burpee into the next run. |
| 3 | Sled push/pull: 12-20 sec | Joanna already leads Lauren here, but the push was only place 8. That suggests room for cleaner force application and less dead time. | Sled start mechanics, grip/rope rhythm on pull, lane-specific pacing, and fast exit. |
| 4 | Erg economy: 8-16 sec | Ski and row are not glaring weaknesses, but small savings here reduce debt before later stations. | Rate/power discipline, aerobic erg economy, and station exits. |
| 5 | Closing complex: 12-22 sec | Carry, lunges, and wall balls are already elite. Gains are possible, but the bigger risk is losing the current advantage. | Maintain posture and breathing; do not overtrain the finish at the expense of running. |
| 6 | Roxzone/clean execution: 8-15 sec | At Sub52 pace, two seconds repeated across entries/exits matters. | Line discipline, pre-decided station setup, no pause before wall balls. |
Joanna: strengths, vulnerabilities, and target blueprint
| Strengths to protect Best current closing profile of the two athletes: lunges and wall balls both place 1 in the uploaded Warsaw summary. Station-side advantage over Lauren even before accounting for race tactics. Public background suggests a young athlete with fast adaptation and multi-sport competitiveness. Late-race composure: last run and final station did not collapse. | Vulnerabilities / time pockets Run total still needs compression. A 30:23 run total is not likely enough for 51:xx unless stations drop dramatically. Burpee broad jump is the obvious split to chase without sacrificing row and later runs. Sled push place suggests a small but meaningful technical pocket remains. Because she already owns late stations, over-chasing wall-ball speed could create more risk than reward. |
A plausible Joanna 51:xx target profile
| Bucket | Current | Target range | Gain |
| Official run total | 30:23 | 29:25-29:35 | 48-58 sec |
| Official non-run | 24:02 | 22:30-22:40 | 82-92 sec |
| Total finish | 54:25.08 | 51:50-51:59 | 145+ sec |
Coaching read: Joanna does not need to become a different athlete. She needs a more portable 29:xx run total and Lauren-like burpee rhythm while preserving the station confidence that already makes her the current benchmark.
Athlete 2: Lauren Weeks
Current profile: run-side leader, burpee leader, race-experience monster, station-side gap to solve.
Lauren is The Hybrid Engine as a CrossFit Level 2 coach, three-time HYROX Elite World Champion, CrossFit Regional athlete, CrossFit Semifinals team athlete, collegiate swimmer, DekaFit World Champion, and holder of substantial running, weightlifting, and powerlifting personal records. CrossFit also describes her as a mother and avid CrossFit athlete. This background explains why her floor is so high: she has long multi-sport exposure, broad strength and conditioning literacy, and deep HYROX race history.
| Metric | Warsaw value | Place / note | Interpretation |
| Overall | 54:54.09 | Rank 2 | Needs 2:54.10 for Sub52. The gap is larger than Joanna's because the station/non-run side is bigger. |
| Run total | 29:52 | Place 1 | Current run-side leader and 31 seconds faster than Joanna. |
| Best run lap | 3:11 | Place 1 | Fastest single run lap. Strong indicator of pure speed and late-race running capacity. |
| Burpee broad jump | 2:33 | Place 1 | The clearest station weapon: 24 seconds faster than Joanna. |
| Sled push | 2:24 | Place 13 | Major race-specific strength/execution opportunity. |
| Sled pull | 3:25 | Place 13 | Largest head-to-head station deficit vs Joanna: 25 seconds. |
| Sandbag lunges | 3:02 | Place 11 | Huge late-race opportunity, especially because wall balls follow immediately after run 8. |
| Wall balls | 3:29 | Place 2 | Still elite, but Joanna was 9 seconds faster. Sub52 requires more than being second here. |
Where Lauren can gain the most time
Figure 3. Lauren needs roughly 174 seconds for Sub52. The chart is station-heavy because her current run and burpee profile are already the strongest parts of the race.
Priority map for Lauren
| Priority | Time pocket | Why it matters | Likely training emphasis |
| 1 | Sled pull: 30-38 sec | Warsaw split was 3:25 vs Joanna 3:00. This is the biggest single station swing. | Rope rhythm, leg drive, hip position, grip endurance, and repeatability under high HR. |
| 2 | Sandbag lunges: 20-30 sec | Current 3:02 vs Joanna 2:43. The station sits late and bleeds into the final run/wall balls. | Lunge cadence, upright torso, transition into Run 8, and posterior-chain durability. |
| 3 | Sled push: 15-20 sec | Current 2:24 and place 13. Big enough to matter even if run total stays elite. | Start pressure, lower body force at fatigue, lane-specific technique, and shorter pauses. |
| 4 | Row + wall balls: 28-36 sec combined | Row was 4:27 and wall balls 3:29. This is a finish-complex debt pocket. | Row rate discipline, breathing, trunk endurance, wall-ball set structure, and no panic at the target. |
| 5 | Run total: 35-45 sec | She already leads. The danger is chasing more run speed and paying for it on sleds/lunges. | Economy at sub-3:40/km equivalent race rhythm; protect station power after runs 2-4. |
| 6 | Ski/carry/clean seconds: 12-20 sec | These are smaller leaks but still meaningful at the Sub52 frontier. | Ski pacing, carry grip/turns, ROXZONE entry/exit scripts. |
Lauren: strengths, vulnerabilities, and target blueprint
| Strengths to protect Fastest official run total in the top-two comparison. Best burpee broad jump split in the race summary and 24 seconds ahead of Joanna. Deep HYROX experience and broad training background across CrossFit, swimming, running, weightlifting, and powerlifting. Proven race IQ and championship history. | Vulnerabilities / time pockets Station/non-run side is the main barrier: official non-run is about 60 seconds behind Joanna already and must drop far beyond that for Sub52. Sled pull, sled push, and lunges show the biggest current head-to-head and ranking gaps. Row and wall balls are not bad splits, but a 51:xx race has little tolerance for closing-block fatigue. Because she already leads the run, the safer project may be preserving run speed while lifting station density rather than chasing pure run aggression. |
A plausible Lauren 51:xx target profile
| Bucket | Current | Target range | Gain |
| Official run total | 29:52 | 29:05-29:15 | 37-47 sec |
| Official non-run | 25:02 | 22:45-22:55 | 127-137 sec |
| Total finish | 54:54.09 | 51:50-51:59 | 174+ sec |
Coaching read: Lauren does not need to prove she can run. Her Sub52 project is to make the fixed work look like it belongs to the same athlete as the run total: sled pull, lunges, push, row, and wall balls must compress by more than one minute combined without dulling the run/burpee advantage.
Why the two projects are not the same
The seductive mistake is to ask which athlete is closer by overall time only. Joanna is closer by the clock, but Lauren owns the strongest single race weapon: the official run total. The better question is which athlete can absorb the other athlete's best trait with the least risk.
| Split / bucket | Joanna | Lauren | Current edge |
| Overall | 54:25.08 | 54:54.09 | Joanna by 29 sec |
| Official run total | 30:23 | 29:52 | Lauren by 31 sec |
| Official non-run | 24:02 | 25:02 | Joanna by 60 sec |
| Burpee broad jump | 2:57 | 2:33 | Lauren by 24 sec |
| Sled pull | 3:00 | 3:25 | Joanna by 25 sec |
| Sandbag lunges | 2:43 | 3:02 | Joanna by 19 sec |
| Wall balls | 3:20 | 3:29 | Joanna by 9 sec |
Interpretation
- Joanna's cleanest Sub52 path: 29:25-29:35 run total, near-Lauren burpees, and a non-run bucket around 22:30-22:40. This path asks her to keep her station identity while gaining runner/burpee speed.
- Lauren's cleanest Sub52 path: 29:05-29:15 run total, keep the burpee lead, and cut the non-run bucket into the high-22s. This path asks her to make a much larger station-density jump.
- If Lauren only copies Joanna's current stronger stations while retaining her own burpee edge, she still does not reach Sub52. That is why her model needs a new station band, not just a head-to-head cleanup.
- If Joanna only copies Lauren's run total and burpee split, she still does not reach Sub52. That is why her model also needs new station/ROXZONE efficiency beyond the current best-of-both fantasy.
Coaching implications by athlete
This section stays intentionally high-level. It is a performance map based on observed race splits and athletes background.
Joanna programming emphasis
- Run density: progress from pure aerobic volume to repeated 1 km efforts after sled/burpee/row exposures. The goal is 29:xx race total without sacrificing station sharpness.
- Burpee broad jump rhythm: prioritize repeatable spacing, minimal stand-still time, and quick floor-to-foot transitions over maximal jump distance.
- Sled micro-speed: her pull is already a strength; the push and exits are where 5-10 seconds may hide.
- Protect the finish: lunges and wall balls are weapons. The training goal is to keep them sharp while adding run speed, not to turn the finish into the only project.
Lauren programming emphasis
- Sled pull as the first station project: this is the biggest single current split deficit relative to Joanna and should be treated as a race-skill strength station, not just a strength station.
- Late-leg durability: sandbag lunges and Run 8 should be trained as one block. The goal is less lunge time and less downstream wall-ball debt.
- Station density without run loss: push, row, carry, lunges, and wall balls need compression while preserving the run and burpee weapons.
- Race-energy allocation: the danger is overusing the run advantage early and paying for it in sled pull, row, lunges, and wall balls.
Shared Sub52 principles
| Principle | Why it matters |
| Run economy under fatigue | The physiology literature supports endurance capacity as a major determinant; both athletes need faster running without station collapse. |
| Finish-complex durability | Wall balls are the physiological choke point, and the final run/lunges/wall-ball block decides whether a fast first 40 minutes survives. |
| Roxzone precision | At 51:xx pace, hesitation and station setup are performance variables. |
| No fantasy single split | Sub52 requires distributed improvement across several segments. No one station solves it. |
Final Thoughts
For Joanna Wietrzyk, Sub52 looks like the current benchmark athlete becoming more portable as a runner. Her Warsaw profile already shows the most complete late-station package in the field. She does not need to chase a radically different identity; she needs to shave the run total into the 29:xx band, close the burpee broad jump gap, and keep her finish intact. The danger is overcorrecting toward speed and weakening the very thing that currently separates her: late-race strength under control.
For Lauren Weeks, Sub52 looks like the fastest runner in the race becoming far denser on fixed work. Her run total and burpee broad jump are already the template. The barrier is that Sub52 asks for more than matching Joanna's stations; it asks for a station/non-run jump that moves into the high-22-minute range while leaving her run weapon intact. That makes sled pull, sled push, lunges, row, and wall balls the key project.
The bigger takeaway for the sport is that the first 51:xx will probably not come from one athlete simply running harder. It will come from a profile that removes the current tradeoff: Joanna's station composure with Lauren's run and burpee aggression, then another 90 seconds of performance quality beyond the current best-of-both model. Sub53 is the first question. Sub52 is the project.
References:
- HYROX 25/26 Singles Rulebook: https://hyrox.com/wp-content/uploads/2025/07/25_26_HYROX_RulebookSingles_EN.pdf
- Brandt et al. (2025), Frontiers in Physiology: Acute physiological responses and performance determinants in HYROX: https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2025.1519240/full
- Amazfit athlete profile: Joanna Wietrzyk: https://us.amazfit.com/pages/joanna-wietrzyk
- HYRESULT athlete profile: Joanna Wietrzyk: https://www.hyresult.com/athlete/joanna-wietrzyk
- CrossFit podcast page: Hyrox Champion Lauren Weeks on CrossFit: https://www.crossfit.com/podcasts/the-crossfit-podcast-hyrox-champion-lauren-weeks-on-crossfit
- CrossFit Games athlete profile: Lauren Weeks: https://games.crossfit.com/athlete/318830
- The Hybrid Engine: About your coaches / Lauren Weeks background and PRs: https://www.thehybridengine.com/about-your-coaches
- HYRESULT athlete profile: Lauren Weeks: https://www.hyresult.com/athlete/lauren-weeks
Important limitation
This document is based on public athlete profiles and interpreted only as context for the observed split pattern.