4:20 per km pace

A pace of 4:20/km is 6:58/mi, or 13.8 km/h (8.6 mph). At that pace you finish a 5K in 21:40, a 10K in 43:20, a half marathon in 1:31:25 and a marathon in 3:02:51.

Try it at another distance

10K finish times around your target, in 5 seconds steps
Change	Time	Pace
−0:20	40:00	4:006:26
−0:15	40:50	4:056:34
−0:10	41:40	4:106:42
−0:05	42:30	4:156:50
Your target Finish time Pace /km
+0:05	44:10	4:257:06
+0:10	45:00	4:307:15
+0:15	45:50	4:357:23
+0:20	46:40	4:407:31

min/kmmin/mikm/hmph

Arrow keys nudge the value. Hold Shift for bigger steps.

Finish times at 4:20 per km

Finish time at this pace for each distance
Distance	Finish time
1K	4:20
1 mile	6:58
5K	21:40
10K	43:20
10 miles	1:09:44
Half marathon	1:31:25
Marathon	3:02:51
50K	3:36:40

Splits

Negative splitEven pace all the way

Splits per km
km	Split	Elapsed
1	4:20	4:20
2	4:20	8:40
3	4:20	13:00
4	4:20	17:20
5	4:20	21:40
6	4:20	26:00
7	4:20	30:20
8	4:20	34:40
9	4:20	39:00
10	4:20	43:20

Splits per mile
Mile	Split	Elapsed
1	6:58	6:58
2	6:58	13:57
3	6:58	20:55
4	6:58	27:54
5	6:58	34:52
6	6:58	41:51
Final 0.214 mi	1:29	43:20

Equivalent times at other distances

Estimate

Estimated times at other distances (Riegel formula)
Distance	Estimated time
5K	20:47
10 miles	1:11:45
Half marathon	1:35:37
Marathon	3:19:21

These are estimates from the Riegel formula, T2 = T1 × (D2 ÷ D1)^1.06. They assume you’ve trained for the other distance, so treat them as a guide, not a promise.

Pace questions runners ask

How long is a marathon at 4:20/km?: At 4:20/km a marathon takes 3:02:51 and a half marathon 1:31:25.
What is 4:20 per km in minutes per mile?: 4:20/km is 6:58/mi.
What treadmill speed is 4:20 per km?: 4:20/km is 13.8 km/h, or 8.6 mph.