21km Run

A Half Marathon Run Calculator
  kilometers       miles

Enter Target Race Pace
 
minutes seconds per kilometer
 
with optional allowance for slowing to
 
minutes seconds per kilometer
 
from
 
kilometers
OR Enter Target Race Time
 
hours minutes
 
with optional allowance for fading of
 
seconds per kilometer per cent
 
from
 
kilometers

Overall Pace

Pre-Fade Pace

Post-Fade Pace

Kilometer 1

Kilometer 2

Kilometer 3

Kilometer 4

Kilometer 5

Kilometer 6

Kilometer 7

Kilometer 8

Kilometer 9

Kilometer 10

Kilometer 11

Kilometer 12

Kilometer 13

Kilometer 14

Kilometer 15

Kilometer 16

Kilometer 17

Kilometer 18

Kilometer 19

Kilometer 20

Kilometer 21

Calculated Overall Time
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