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TriSplitCalc
Triathlon Pace Engine

Split planning hub

Triathlon Splits

Choose the right split tool for your question instead of forcing every workflow into one calculator.

Reverse goal-time calculator

Goal Split Planner

Start with the finish time you want, then reverse-calculate the swim, bike, run, transition, checkpoint, and fueling requirements that make the target possible.

Goal clock
02:45:00
Race distance
Carb target
75 g/hr
3065100
Swim
Solid
30:35
2:02 / 100 m
18.5% of total
Bike
Solid
1:15:40
31.7 km/h (19.7 mph)
45.9% of total
Run
Solid
54:44
5:28 / km
33.2% of total

Checkpoint Clock

Swim exit00:30:35
T1 exit00:33:05
Bike finish01:48:46
T2 exit01:50:16
Finish02:45:00

Fuel & Hydration Estimate

Total carbs145 g
Bike carbs95 g
Run carbs50 g
Bike bottles2 (every 38 min)
Bike gels0 gels
Run gels2 gels (every 27 min)
Run aid stations5
Total sodium1304 mg
Total fluids1521 ml

Based on your body weight of 70kg, your carb target of 75g/hr corresponds to 1.07g/kg/hr.

Plan Checks

  • This split shape looks internally consistent. The next check is whether your recent training supports each required pace.
Open in finish-time calculator

Start here

Triathlon split calculatorBest when you know your paces and want leg-by-leg splits.Goal split plannerBest when you know the finish time and need required splits.Finish time calculatorBest when the total projected clock is the main question.

Long-course split checks

Cutoff bufferCheck if the splits clear swim, bike, and finish cutoffs.Bike split from FTPTurn power and IF into a realistic bike estimate.Course adjustmentCompare neutral splits with race-day course friction.

Distance-specific hubs

Sprint plannerBest for beginner short-course split and checklist questions.Olympic plannerBest for Olympic-distance and sub-3 split planning.Plan examplesValidate outputs against realistic race-plan archetypes.

Split planning rule

A good split plan is not just faster swim, faster bike, faster run. It is the fastest combination you can still execute after transitions, fueling, heat, and course friction.

Trust and methodology

How this page should be used

Last updated

July 13, 2026

Maintained by

M Imtinan Farooq

Status

Planning estimate, not a race guarantee

Formula summary

Finish time = swim + T1 + bike + T2 + run, with related tools for risk checks.

Key assumptions

Entered paces, distances, transitions, and condition choices are race-realistic.

Limitations

Weather, course profile, water conditions, equipment, and execution can change results.

Full formulas, source notes, and limitation details are maintained on the methodology page. Use official race guides for event rules, cutoff times, venue policies, and safety instructions.