Public race-day planning tool

Build a calmer race-day pacing and hydration plan before heat, hills, and adrenaline scramble the day.

AidSplit helps runners turn race type, weather load, course profile, aid-station spacing, fueling tolerance, stomach sensitivity, and start discipline into a usable race brief. Instead of another generic pace calculator, you get a recommended strategy posture, phase-by-phase cues, aid-station actions, fueling timing, and a note you can actually carry into the race.

Plan the race How AidSplit works
  • Built for runners who want practical race execution, not another giant training dashboard
  • Balances pace ambition with course stress, gut tolerance, and hydration reality
  • Outputs a strategy you can screenshot, print, or share with a coach or partner

Useful when

  • You know your target pace in theory, but race-day conditions make it hard to trust
  • You tend to go out too hard and regret it by the middle of the race
  • You want aid-station and fueling cues matched to real stress, not just optimistic spreadsheets

AidSplit is a planning aid. It does not replace medical advice, coaching judgement, or event-specific safety rules.

Race brief generator

Turn the course, the weather, and your habits into a plan you can actually follow.

Read the scoring logic

Tip: AidSplit updates the URL after each run, so you can bookmark or share the exact scenario.

Better than generic pace math

AidSplit blends course stress, hydration reality, and your own pacing habits into one practical recommendation.

Useful for coaches and friends too

The final brief is written so someone crewing you, pacing you, or checking in can understand the plan quickly.

Made for real race nerves

The tool assumes you are a human who may forget to drink, surge too early, or panic when the day gets warmer than expected.