400m Split Calculator | 100m & 200m Sprint Split Targets

Event (loads example)Preset shape

Target race time (seconds)

400m model range: 43–80s. Enter seconds, for example 60.00. Examples load their goal and the Realistic preset.

Modeled checkpoints

Illustrative 400m in 60.00s · Realistic preset.

First 200m clock: 28.20 s
Second 200m duration: 31.80 s

These are heuristic targets, not observed splits or a performance prediction.

400m · 60.00s goal · Realistic preset
Distance (m)	Segment (s)	Elapsed (s)	Mean speed (m/s)
100m	Segment (s)13.800	Elapsed (s)13.80	Mean speed (m/s)7.25
200m	Segment (s)14.400	Elapsed (s)28.20	Mean speed (m/s)6.94
300m	Segment (s)15.600	Elapsed (s)43.80	Mean speed (m/s)6.41
400m · Finish	Segment (s)16.200	Elapsed (s)60.00	Mean speed (m/s)6.17

Overall speed: 6.67 m/s. Segment mean range: 6.17–7.25 m/s. A segment mean is not an instantaneous peak speed.

Elapsed clocks round to hundredths, moving segments to thousandths and speeds to hundredths. Calculations retain the canonical model precision; rounded rows may not sum exactly.

Model assumptions

The existing presets are simple shapes, not athlete-specific or validated optimal pacing prescriptions. Strategy names do not guarantee equal segment times: the Even preset retains a slight fade for 400m and a curve adjustment for 200m.

400m weights: Realistic 23/24/26/27%; Even 24/25/25.5/25.5%; Negative 26.5/25.5/24.5/23.5%. The Negative preset has a faster second half. Reversing the existing weights corrects its name; it does not establish an optimal strategy.

Actual starts, wind, lane draw, fatigue and individual technique can change observed splits. Compare with measured training data before using these targets.

Existing phase reference

0–100m · First 100
100–200m · Float (100-200)
200–300m · Maintain (200-300)
300–400m · Finish (300-400)

Compare modeled sprint checkpoints and half-race clocks.

How coaches use the sprint splits calculator

Use this sprint splits calculator when you need 100m, 200m, or 300m checkpoints for an open 100m, 200m, or 400m race model — even, negative, or realistic fade.

Build open-400 pacing plans with 100m, 200m, and 300m checkpoints coaches can call out mid-race.
Set first-200 and closing-200 targets for the open 400m so athletes know what a controlled opening actually feels like.
Model 100m and 200m races segment by segment, including acceleration, max velocity, and late-race fade.
Compare sprint-race models when athletes need a more controlled opening or a stronger finish pattern.

Sprint Splits Calculator FAQ

Use the sprint splits calculator when you need 100m, 200m, or 300m phase checkpoints for the open 100m, 200m, or 400m. Use the lap split calculator when you need 200m or 400m checkpoints for the 800m, mile, 3200m, or 5K.

Yes. Enter a 400m goal time and the tool gives you phase-by-phase checkpoints so athletes and coaches can judge whether the first half and the finish are on target.

Most successful open 400s follow a controlled fade: the realistic model here distributes roughly 23%, 24%, 26%, and 27% of the goal time across each 100m, while the even and negative models tighten or reverse that pattern. Pick the model that matches how you coach the event.

Per-leg relay planning is a different job — leadoff versus flying starts, exchanges, and team totals. Use the relay split calculator for the 4x100, 4x200, 4x400, and 4x800, and the DMR split calculator for distance medley legs.

Similar Calculators

Wind Adjustment Calculator

Adjust sprint times for wind assistance. Convert 100m and 200m track performances to still-air equivalents instantly.

100m Predictor

Predict a 100m time from block 30m, fly 10m, wind, and reaction inputs. Built for sprint coaches comparing practice data to race outcomes.

200m Lane Draw Converter

Convert outdoor 200m performances between lanes using a per-lane advantage estimate. Compare marks from inside and outside lane assignments.

Which split calculator should you use?

Use the pace calculator when you need an overall pace per mile or kilometer. Use the lap split calculator when you need distance-race checkpoints. Use the sprint splits calculator when the job is open 100m, 200m, or 400m phase pacing — and the relay or DMR split calculators when you need per-leg targets.

Pace calculator

Best for pace per mile, pace per kilometer, and general race planning.

Lap split calculator

Best for 200m and 400m checkpoints, race plans, and printable split targets.

Sprint splits calculator

Best for 100m, 200m, and 300m phase checkpoints in the open 100m, 200m, and 400m.

Looking for	Best calculator	Use when
pace calculator track	Pace calculator	Best when the question is pace per mile or kilometer from a race result or goal time.
lap split calculator	Lap split calculator	Best for 200m, 400m, and custom checkpoints for the 800m, mile, 3200m, and 5K.
track splits calculator	Lap split calculator	Best for mile split sheets, track splits, and checkpoint math you can use from the infield.
400m split calculator	Sprint splits calculator	Best for 100m, 200m, and 300m checkpoints in the open 400m.
4x400 relay split calculator	Relay split calculator	Best for per-leg 4x100, 4x200, 4x400, and 4x800 targets with exchange checkpoints.
dmr split calculator	DMR split calculator	Best for 1200-400-800-1600 leg targets and DMR track-length conversions.

Common sprint split targets

Use these examples as a quick sprint pacing reference, then adjust the calculator for your exact goal time or race model.

Event	Goal time	Checkpoint targets
400m	52.0	100m 13.0 \| 200m 26.0 \| 300m 39.0
400m (realistic fade)	48.0	100m 11.0 \| 200m 22.6 \| 300m 35.0
400m (even)	60.0	100m 14.4 \| 200m 29.4 \| 300m 44.7
200m	24.4	50m 6.1 \| 100m 12.2 \| 150m 18.3

If you need 200m or 400m checkpoints for the 800m, mile, 3200m, or 5K instead of a sprint race model, switch to the lap split calculator.

What questions does the sprint splits calculator answer?

Use this calculator when the question is, “What split should I hit at each phase of an open sprint race?” It covers 400m splits, pacing-strategy comparisons, and 100m and 200m phase breakdowns. For per-leg relay or DMR targets, use the relay split calculator or DMR split calculator instead.

Coaching question	Best for	Output
400m split calculator	Open-400 race modeling	100m, 200m, and 300m checkpoints from a goal time.
400m race model	Pacing-strategy comparisons	Even, negative, and realistic-fade checkpoint patterns for the open 400m.
200m split calculator	200m curve and straight breakdowns	50m segment targets with a curve-adjusted first 100m.
sprint calculator	Sprint-phase breakdowns	Controlled checkpoint math for 100m, 200m, and 400m race plans.

Sprint Splits Calculator

Modeled checkpoints

Model assumptions

Existing phase reference

How coaches use the sprint splits calculator

Sprint Splits Calculator FAQ

When should I use a sprint splits calculator instead of a lap split calculator?

Can I use this as a 400m split calculator?

How should the 100m splits of a 400m break down?

What about relay or DMR splits?

Similar Calculators

Wind Adjustment Calculator

100m Predictor

200m Lane Draw Converter

Which split calculator should you use?

Pace calculator

Lap split calculator

Sprint splits calculator

Common sprint split targets

What questions does the sprint splits calculator answer?

Set the model inputs

Modeled checkpoints

Model assumptions

Existing phase reference