Hybrid fitness race tools
Calculators for 8-run, 8-station races. Free, no account needed.
Free tools for 8-run, 8-station hybrid races, including a race-day planner, a training plan builder, a sim planner for gyms and race-weight converters. The finish time predictor estimates your finish from your 5 km time and station strengths (a 25:00 5 km runner with solid stations: about 1:22:43–1:33:09). The pace calculator turns a target into a split for every run and station (1:30:00 needs about 6:05 per km). Where would I place? shows what share of finishers a time beats, and the station benchmarks show typical times for every station by finish time.
Finish time predictor
What will I finish in?
Enter your 5 km time and how strong you are at each station. Get a predicted finish range, where the time goes and how each split compares.
Open the finish time predictorPace calculator
What pace do I need for my target?
Pick a target finish and get a pace for every run and a split for every station, then drag any section against the spread of finishers. Copy or print it. Includes a 1 km ↔ 5 km ↔ 10 km converter.
Open the pace calculatorWhere would I place?
Is my finish time good?
Enter a finish time and division to see what share of finishers you beat, the typical finish and the times for the top 50%, 25% and 10%.
Open the where would i place?Station benchmarks
Is my station time good?
Typical, top-25% and top-10% times for all 8 stations and the runs, compared with finishers who finish in about the same time as you. One page per station.
Open the station benchmarksRace-day planner
When should I eat, arrive and warm up?
Clock times for waking, meals, travel, warm-up, caffeine and refuelling, worked back from your wave time.
Open the race-day plannerTraining plan builder
How should I train for my race date?
Base, build, peak and taper blocks to race day, with weekly load and a sample week.
Open the training plan builderGym sim planner
How many waves, how long, how many staff?
For gyms: bottleneck station, wave size, start interval, event length, wave schedule and staff.
Open the gym sim plannerRace weights and converters
What weights, in kg or lb?
Standard race weights in kg and lb, plus km/miles and pace per km/mile converters.
Open the race weights and convertersHow the tools work
The calculators use a simple, published model with fixed coefficients, so the numbers are estimates; each page lists every assumption. The spread charts compare your splits with aggregated percentiles of finishers around your time. Want your real numbers? Race a gym sim near you, or read the race guides and blog.
Last updated by Hybrid Racing Platform.
Test it on a real course
A sim at a gym near you runs the full 8 runs and 8 stations with every split timed, so you get your real numbers instead of an estimate. A free account keeps every result and shows where your time goes.