What is a good half marathon time for a 45-year-old woman?
Regional class (70% age-graded) is 1:37:16. National class (80%) is 1:25:06. World class (90%) is 1:15:39. Those are the half marathon times a 45-year-old woman needs against the world best for that age, graded with AJ 2025.
Tiers at 45
| Age grade | Tier | Time | min/km |
|---|---|---|---|
| 90% | World class | 1:15:39 | 3:35 |
| 80% | National class | 1:25:06 | 4:02 |
| 70% | Regional class | 1:37:16 | 4:37 |
| 60% | Local class | 1:53:28 | 5:23 |
| 50% | Recreational | 2:16:10 | 6:27 |
Ages 43 to 47
The tables are single-year. This is how much the target moves in the two years either side of 45.
| Age | 50%Recreational | 60%Local class | 70%Regional class | 80%National class | 90%World class |
|---|---|---|---|---|---|
| 43 | 2:13:50 | 1:51:32 | 1:35:36 | 1:23:39 | 1:14:21 |
| 44 | 2:14:57 | 1:52:28 | 1:36:24 | 1:24:21 | 1:14:58 |
| 45 | 2:16:10 | 1:53:28 | 1:37:16 | 1:25:06 | 1:15:39 |
| 46 | 2:17:28 | 1:54:33 | 1:38:11 | 1:25:55 | 1:16:22 |
| 47 | 2:18:51 | 1:55:43 | 1:39:11 | 1:26:47 | 1:17:09 |
Questions
What is a good half marathon time for a 45-year-old woman?#
Against the world best adjusted for age, a 45-year-old woman scores 60% (local class) with 1:53:28, 70% (regional class) with 1:37:16, 80% (national class) with 1:25:06 and 90% (world class) with 1:15:39 over the half marathon. Graded with AJ 2025.
What half marathon time is 80% age-graded at 45 for women?#
1:25:06, which is 4:02 min/km. 80% is the usual shorthand for national class. In a big-city marathon field roughly one finisher in eighty reaches it.
Does the target change at 46?#
Yes, a little. The tables are single-year, so every birthday moves the target a few seconds over a 5K and a minute or two over a marathon. The rows for 43 to 47 on this page show the slope.
Where the numbers come from
Age grading divides the world best for the distance, adjusted for age and sex, by your time. 100% is that world best. The road factors are the AJ 2025tables, approved by USATF’s Masters Long Distance Running Council. The methodology page has the formula, and this post shows what 80% looks like across every distance.