5k · 5000 m

5K pace calculator.

From parkrun debut to sub-15 — pick a target time, see your km splits and the 400 m lap paces that get you there. How accurate is this?

Your Goal Time

Minutes

Seconds

Units

Quick Goals

Who Runs This

At 20:00 your predicted 10K is 41:42 and half marathon is 1:32:00. Solid recreational runner — above the median.

Your 5K Pace

4:00/km

to finish a 5K in 20:00

Per Mile

6:26

Speed

15.00

km/h

400m Lap

1:36

Even-Pace Splits · 20:00 Goal

Distance	Split	Cumulative	Pace
1 km	4:00	4:00	4:00
2 km	4:00	8:00	4:00
3 km	4:00	12:00	4:00
4 km	4:00	16:00	4:00
FINISH · 5 km	4:00	20:00	4:00

Most sub-20 5Ks aren't run even — they negative-split slightly after a controlled K1.

K14:02Resist the gun. Settle.

K23:58Lock in goal pace.

K34:01Mental wobble — push.

K43:581km to go: commit.

K53:51Empty the tank.

Why it works. Banking time only works if you have it to spend. K1 even pace + K5 surge nets the same 20:00 with less suffering.

5K Pace

4:00

min/km

5K Pace

6:26

min/mile

Equiv. 10K

41:42

Riegel predicted

Equiv. Half

1:32:00

Riegel predicted