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Race model calculator

HYROX Finish Time Predictor

Race-result-informed predictions from your running and gym benchmarks

5K-led model Open + Pro Station splits

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Predict your HYROX finish time from 5K pace, gym benchmarks, and division

Your current 5K personal best or a recent time trial

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How the Finish Time Predictor Works

The predictor uses your 5K run time as the primary input because running accounts for 45-55% of total HYROX race time. Your 5K pace is extrapolated across eight 1-kilometer run legs with a cumulative fatigue factor that reflects real-world slowdown as athletes alternate between running and functional fitness stations. Later runs are estimated 3-8% slower than the first run depending on your aerobic base.

When you provide optional gym benchmarks, the model refines station-specific estimates. A stronger deadlift relative to bodyweight correlates with faster sled push and sled pull splits. Your rowing 1K time maps almost directly to the rowing station. SkiErg benchmarks carry the highest correlation to actual SkiErg station time of any input in the model.

The RoxZone transition estimate covers movement between the run track and each station, including the short indoor running segments within the venue. For Open division the RoxZone average is approximately 5:20 across all eight transitions. Division-specific equipment weights are applied so that Open and Pro predictions reflect actual competition loads.

What Drives Your HYROX Finish Time

Of all inputs, 5K time explains roughly 65% of finish time variance in population data. The remaining variance is split between station efficiency (about 25%) and RoxZone transitions (about 10%). This means that if you want a faster finish time, improving your running is still the highest-leverage investment, but most athletes plateau their running before optimizing stations.

The sled push and sled pull together account for the largest single chunk of station time for most athletes. These stations have the highest coefficient of variation in the dataset, meaning the spread between slow and fast athletes is largest here. Targeted sled training produces the most predictable time improvements of any station.

Wall balls are the station where energy cost is most underestimated. 100 reps at competition height feels manageable in the gym but arrives at the end of the race when glycogen stores are depleted. Athletes who practice wall balls at the end of long training sessions, not the beginning, consistently outperform their benchmarked predictions.

Frequently Asked Questions

With only a 5K time the prediction is accurate within 10-15 minutes for most athletes. Adding optional inputs (deadlift, rowing, SkiErg benchmarks) narrows the margin to 5-8 minutes. Athletes who train for HYROX specifically tend to land closer to the lower bound because their station efficiency exceeds the population average.
Only 5K time, gender, and division are required. Missing optional inputs are replaced with population-average estimates for your gender and division bracket. The more data you provide, the more personalized your prediction.
For Men Open, sub-1:30 is advanced and under 1:15 puts you in the top 10%. For Women Open, sub-1:40 is advanced and under 1:25 is top-tier. Pro athletes are typically 10-20 minutes faster than Open despite carrying heavier weights, because they self-select for elite fitness.
Running accounts for 45-55% of total HYROX time. A 30-second improvement per kilometer in 5K pace translates to roughly 4-5 minutes off your total. This is why 5K time is the single strongest predictor of HYROX performance across all divisions.
The RoxZone is the transition area connecting each run segment to the next station. Athletes typically spend 4-6 minutes total in transitions across the whole race. The calculator applies a flat RoxZone estimate (adjusted by division) on top of run and station times.
Yes. A progressive fatigue factor is applied to each run segment. Runs 5-8 are estimated slower than runs 1-4 based on observed performance curves from real race data. The fatigue multiplier is higher for athletes with slower 5K times because aerobic base affects late-race degradation more.
Yes. Pro division carries significantly heavier weights on sled, farmers carry, sandbag lunges, and wall balls. The station time estimates increase accordingly. A typical Open to Pro penalty is 8-14 minutes for the same athlete fitness profile.
The model uses regression analysis on HYROX race-result datasets and benchmark standards. For each gender and division bucket, we correlate gym benchmarks (5K time, SkiErg 1K, row 1K, deadlift relative strength) with finish-time patterns. Station time estimates are derived from median station splits by finish-time percentile.

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