Half Marathon pace calculator

Half Marathon Pace Calculator: Sub 1:21

Required pace

6:11/mi

3:50 per km

Half Marathon · Sub 1:21

Mile-by-mile splits

  • Mile 1
    6:116:11
  • Mile 2
    6:1112:21
  • Mile 3
    6:1118:32
  • Mile 4
    6:1124:43
  • Mile 5
    6:1130:54
  • Mile 6
    6:1137:04
  • Mile 7
    6:1143:15
  • Mile 8
    6:1149:26
  • Mile 9
    6:1155:37
  • Mile 10
    6:111:01:47
  • Mile 11
    6:111:07:58
  • Mile 12
    6:111:14:09
  • Mile 13
    6:111:20:19
  • Finish (13.1 mi)
    0:411:21:00

Run Sub 1 hour 21 minutes and you're in strong age-group range for a Half Marathon (3:50/km). Speed-specific training and sustained mileage are the usual foundation. Glance at the mile markers above when you want a feel for each segment.

Nearby goal times

Full half marathon pace chart

Sub 1:21 Half Marathon FAQ