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Work is necessary. Running is mandatory.

Pace Prediction Chart

This prediction chart was calculated by Gerry Purdy in his book, Computerized Running Training Programs. The numbers are rounded to make it easier to remember the corresponding times for your target race. For the average runner under average conditions, a 22 minute 5K would give them the necessary speed to do a 1:45 half marathon. Conversely, a 4:15 marathoner should be able to run a sub 2:00 half marathon. Of course, there will be a variety of outcomes on either side of this performance curve depending on the race course, weather, training specific to the distance, mental preparation, and pacing strategies, to name a few. Each person will tend to have a niche distance that they will do better at. However, the chart is accurate for most people. In other words, use it with discretion.

Half Marathon Pace Prediction Chart

Find your recent 5k, 10k or marathon time and see our recommended half marathon pace group.

Half Marathon
Pace Team
  Recent 5k
Race Time
  Recent 10k
Race Time
  Recent Marathon
Race Time
Time Pace   Time Pace   Time Pace   Time Pace
1:25 6:30   18:10 5:50   38:15 6:10   3:00 6:50
1:30 6:50   19:10 6:10   40:20 6:30   3:10 7:15
1:35 7:15   20:15 6:30   43:00 6:55   3:23 7:45
1:40 7:40   21:15 6:50   45:00 7:10   3:33:30 8:10
1:45 8:00   22:15 7:10   47:00 7:30   3:44 8:30
1:50 8:25   23:30 7:30   49:40 8:00   3:55:30 9:00
1:55 8:50   24:15 7:50   51:25 8:15   4:06 9:20
2:00 9:10   25:30 8:10   54:00 8:40   4:17:20 9:50
2:05 9:30   26:15 8:30   55:50 9:00   4:28 10:15
2:10 9:55   27:30 8:50   58:15 9:20   4:39:15 10:40
2:15 10:20   28:15 9:10   1:00:15 9:40   4:50 11:05
2:20 10:40   29:30 9:30   1:02:50 10:05   5:02 11:30
2:25 11:05   30:30 9:50   1:05 10:25   5:13 11:55
2:30 11:30   31:30 10:05   1:07:15 10:45   5:24 12:20
2:35 11:50   32:30 10:25   1:09:45 11:10   5:35 12:45
2:40 12:10   33:30 10:45   1:11:45 11:30   5:45 13:10
2:45 12:35   34:30 11:05   1:13:50 11:50   5:55 13:30
2:50 13:00   35:15 11:20   1:15:15 12:05   6:07 14:00
2:55 13:20   36:30 11:40   1:17:30 12:30   6:20 14:30
3:00 13:45   37:15 12:00   1:19:50 12:50   6:32 15:00
3:10 14:30   39:45 12:45   1:24:15 13:35   7:00 16:00
3:20 15:10   42:00 13:30   1:29:00 14:20   7:25 16:55
3:30 16:10   44:10 14:15   1:33:50 15:10   7:49 17:55

Full Marathon Pace Prediction Chart

Find your recent 5k, 10k or marathon time and see our recommended Marathon pace group.

Marathon
Pace Team
  Recent 5k
Race Time
  Recent 10k
Race Time
  Recent
Half Marathon
Race Time
Time Pace   Time Pace   Time Pace   Time Pace
3:00 6:50   18:10 5:50   38:15 6:10   1:25 6:30
3:10 7:15   19:10 6:10   40:20 6:30   1:29:45 6:50
3:15 7:25   19:35 6:20   41:20 6:40   1:32 7:00
3:20 7:35   20:05 6:25   42:20 6:50   1:34:15 7:10
3:30 8:00   21:00 6:45   44:20 7:05   1:38 7:30
3:35 8:10   21:30 6:55   45:25 7:15   1:41:15 7:40
3:40 8:20   22:00 7:05   46:25 7:25   1:43:30 7:55
3:45 8:35   22:25 7:10   47:25 7:35   1:45:45 8:05
3:50 8:45   22:55 7:20   48:25 7:45   1:48:15 8:15
3:55 9:00   23:20 7:30   49:25 7:55   1:50:30 8:25
4:00 9:10   23:50 7:40   50:25 8:05   1:52:45 8:40
4:05 9:20   24:15 7:50   51:25 8:15   1:55 8:50
4:10 9:30   24:45 7:55   52:30 8:25   1:57:30 8:55
4:15 9:40   25:10 8:05   53:30 8:35   1:59:45 9:10
4:20 9:55   25:40 8:15   54:30 8:45   2:02 9:20
4:25 10:05   26:05 8:25   55:30 8:55   2:04:15 9:30
4:30 10:20   26:35 8:30   56:30 9:05   2:06:30 9:40
4:40 10:40   27:30 8:50   58:30 9:25   2:11 10:00
4:50 11:05   28:25 9:10   1:00:35 9:45   2:15:30 10:20
5:00 11:25   29:20 9:25   1:02:25 10:00   2:20 10:40
5:10 11:45   30:15 9:45   1:04:35 10:20   2:24:30 11:00
5:20 12:15   31:10 10:00   1:06:40 10:40   2:29 11:20
5:30 12:35   32:05 10:20   1:08:40 11:00   2:33:15 11:40
5:45 13:10   33:25 10:45   1:11:45 11:30   2:39:45 12:10
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SmartPacing is organized by The Runners's Edge in Kansas City and The Runners's Edge of the Rockies in Denver, with support from Races2Remember.com.