Physics-based prediction · FTP + LT pace + real course data · 85 races · Compare, set goals, share.
Choose your race
Choose two races to compare
A Race A
B Race B
Choose your target race
Target finish time
Enter your desired finish time. The engine will calculate the FTP and LT run pace required to hit it with your current profile.
Athlete profile & benchmarks
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Profile
kg
Swim — 400 m pool benchmark
:min : sec
e.g. 7:30 = 1:52 /100m pace
Saves ~4% swim time via buoyancy
Bike — FTP & equipment
W
orW/kg
Pacing strategy
85% FTP on bike · standard brick fatigue on run
Run — lactate threshold pace
:min : sec / km
~10K race pace − 5–8 sec • 85–90% max HR
EnduranceLabs — Race Prediction
Projected finish time
Swim
T1
Bike
T2
Run
Swim
T1
Bike
T2
Run
Swim pace
Bike power / speed
Run pace / km
Adjustments vs flat 22°C baseline
Cut-off time checker
What if I improve X?
Finisher tier
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Difference
Race A
Segment
Race B
Split duration comparison
Race A
Race B
What’s driving the difference
Time penalty vs flat 22°C baseline, per factor
Factor
Race A
Race B
Δ
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Target time —
Required FTP (bike)
Your current:
Required LT pace (run)
Your current:
Target splits to hit your goal
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Save your athlete profile
Enter your email and we’ll send you a one-click sign-in link — no password, no app to install. Your FTP, LT pace, bike setup, and target race are saved automatically and pre-filled on every return visit.
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