Ultra Pace Planner
Plan two equal-distance halves for your goal time and compare your own slowdown percentages. Two equal-distance halves. Slowdown is your input, not a recommendation. Stops are excluded. Terrain, fatigue and weather are not modelled.
A QUICK WALKTHROUGH
How to use this tool
- Enter the required decimal values.
- Enter 1–20 comparison values, separated by commas or new lines.
- Calculate, inspect every row, and copy or download the same report.
Formula
A=60T/D; p1=2A/(2+s/100); p2=p1(1+s/100); t1=p1D/2; t2=p2D/2
Assumptions
Two equal-distance halves. Slowdown is your input, not a recommendation. Stops are excluded. Terrain, fatigue and weather are not modelled.
Results
Calculated. Values show full JavaScript numeric precision.
GOOD TO KNOW
Common questions
How are results calculated?
A=60T/D; p1=2A/(2+s/100); p2=p1(1+s/100); t1=p1D/2; t2=p2D/2 Two equal-distance halves. Slowdown is your input, not a recommendation. Stops are excluded. Terrain, fatigue and weather are not modelled.
Are results guaranteed?
No. This is a local planning calculation, not a guarantee of an individual race outcome.