What the calculator does and what it needs
The standard format is eight 1 km runs, each followed by one functional station, run continuously for time. To predict that accurately, the calculator needs four things: your fresh 1 km run pace, an estimated split for each of the eight stations, a realistic compromised-running slowdown, and your average transition time. Feed it guesses and you'll get a fantasy. Feed it numbers from a recent time trial or training block and you'll get a finish you can trust within a couple of minutes.
Think of it as 8 km of running plus eight workloads plus the cost of being tired. The model adds those layers instead of pretending each piece happens fresh.
Average 1 km run pace
Start with your fresh, controlled 1 km — not your all-out 400 m speed. A mid-pack Open athlete sits around 5:00–5:30/km fresh; competitive age-groupers run 4:15–4:45; podium-level Pro men dip under 4:00. Find yours with a simple 1 km time trial on flat ground, rested.
Be honest: race pace is the pace you can hold eight times with stations in between, not once. If your fresh 1 km is 5:00, your sustainable race pace fresh is closer to 5:10–5:20 before fatigue is even applied.
Times for all eight stations
Each station carries its own cost. Typical Open ranges: SkiErg 1000 m, 4:00–4:45; sled push 50 m, 1:30–3:00 (highly load- and floor-dependent); sled pull 50 m, 1:45–3:15; burpee broad jumps 80 m, 3:30–5:30; rowing 1000 m, 3:40–4:20; farmers carry 200 m, 1:30–2:30; sandbag lunges 100 m, 3:30–6:00; wall balls 100 reps (75 in some women's divisions), 4:00–7:00.
The sleds and lunges show the widest spread — that's where races are won and lost. Wall balls, last on tired legs, are where pacing discipline matters most: a 10-10-10... rep scheme with brief resets beats redlining and failing.
Compromised running slowdown and transitions
Nobody runs their fresh pace after a sled. Compromised running is the tax: most athletes run 20–45 seconds per kilometer slower than fresh by the back half. A good calculator applies a progressive slowdown — say +15s/km early, climbing to +40s/km on runs 6–8 — rather than a flat number.
Transitions are the silent killer. Each entry and exit of the transition zone, racking equipment, and walking to the run lane costs 15–40 seconds. Across roughly sixteen transitions that's 4–10 minutes of standing-still time. Train brisk, deliberate transitions; they're free speed.
Predicted finish and per-segment breakdown
The output is your projected finish plus a segment-by-segment ledger: run 1, station 1, run 2, station 2, and so on. A typical competitive Open finish lands in the 70–90 minute range; sub-60 is strong; elite Pro is 55 minutes and under.
The breakdown is the real value. It shows whether your time is bleeding from slow runs, a weak sled, or sloppy transitions — so you stop guessing where the minutes go.
How to read the result
Scan for the single biggest line item, then the trend. If runs 6–8 balloon, your engine fades — that's an aerobic and durability problem. If one station dwarfs its peers, it's a strength or technique gap. If transitions sum to 6+ minutes, that's the cheapest fix on the board.
Rank your three worst segments by minutes lost, not by how much you dislike them. Attack in that order.
Benchmark ranges by division
Rough finish bands: Open men 75–100 min, Open women 85–110; competitive age-group 65–80; Pro men sub-60 with podiums near 55; Pro women sub-70 with podiums near 60. Doubles (pairs splitting reps) typically finish 10–20% faster than a solo Open time; Relay faster still since each athlete runs fresh.
Use the band above yours as your target, not the world record. Closing one division tier is a season's work, not a fantasy.
Build a plan to close the gap
Translate your worst segments into sessions. Fading late runs: run 6–8 x 1 km at race pace off 60–90s rest, plus a weekly 8–10 km tempo. Weak sled: heavy sled marches and walking lunges, 4 x 50 m loaded near race weight. Wall-ball failures: EMOM sets of 15–20 to build a repeatable break scheme.
Bolt stations onto runs in training — 1 km then a station, repeated — so compromised running stops being a surprise. Re-test every 3–4 weeks and re-run the numbers; watch the projected finish drop as the segment ledger evens out.
Plug in your real numbers and get your projected finish with a full per-segment breakdown using the Hyracer finish-time simulator at /simulator/.
Open the Finish-Time Simulator →