A pace of 8:40/mi is 5:23/km, or 11.1 km/h (6.9 mph). At that pace you finish a 5K in 26:56, a 10K in 53:51, a half marathon in 1:53:37 and a marathon in 3:47:14.
Try it at another distance
10K finish times around your target, in 5 seconds steps
Change
Time
Pace
−0:20
51:47
5:118:20
−0:15
52:18
5:148:25
−0:10
52:49
5:178:30
−0:05
53:20
5:208:35
Your target
/mi
+0:05
54:22
5:268:45
+0:10
54:53
5:298:50
+0:15
55:24
5:328:55
+0:20
55:55
5:369:00
Arrow keys nudge the value. Hold Shift for bigger steps.
Finish times at 8:40 per mile
Finish time at this pace for each distance
Distance
Finish time
1K
5:23
1 mile
8:40
5K
26:56
10K
53:51
10 miles
1:26:40
Half marathon
1:53:37
Marathon
3:47:14
50K
4:29:16
Splits
Splits per km
km
Split
Elapsed
1
5:23
5:23
2
5:23
10:46
3
5:23
16:09
4
5:23
21:32
5
5:23
26:56
6
5:23
32:19
7
5:23
37:42
8
5:23
43:05
9
5:23
48:28
10
5:23
53:51
Splits per mile
Mile
Split
Elapsed
1
8:40
8:40
2
8:40
17:20
3
8:40
26:00
4
8:40
34:40
5
8:40
43:20
6
8:40
52:00
Final 0.214 mi
1:51
53:51
Equivalent times at other distances
Estimate
Estimated times at other distances (Riegel formula)
Distance
Estimated time
5K
25:50
10 miles
1:29:11
Half marathon
1:58:49
Marathon
4:07:44
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.
10K 53:51
km5:23/km
15:23
210:46
316:09
421:32
526:56
632:19
737:42
843:05
948:28
1053:51
mi8:40/mi
18:40
217:20
326:00
434:40
543:20
652:00
6.2153:51
Pace questions runners ask
How long is a marathon at 8:40/mi?
At 8:40/mi a marathon takes 3:47:14 and a half marathon 1:53:37.