Boise Half
Boise Half race day weather
Cool conditions, moderate wind shifts
Runners will face temperatures starting at 45°F and rising to 49°F, with light winds from the WNW at 8 mph. Humidity will be moderate at 65%, but no rain is expected. With headwinds in the first four miles and again in the last two, runners should conserve energy early and take advantage of the tailwinds between miles 5-11 to maintain pace.
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Boise Half route and elevation
The Boise Half course has about 80 ft (24 m) of climbing and 80 ft (24 m) of descent, and finishes near the elevation it starts. It is flatter than 61% of the half marathon courses racecast.io has mapped, measured by what the hills cost in time. It has no steep miles: no mile climbs more than 25 ft (8 m).
Biggest climbs
- Miles 4.9 to 10.7: climbs about 80 ft (24 m).
What the hills cost
- 1:45 on a flat course is about 1:45:20 here (20 seconds slower).
- 2:00 on a flat course is about 2:00:20 here (20 seconds slower).
- 2:15 on a flat course is about 2:15:25 here (25 seconds slower).
Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.
Even-effort splits for a 1:45, 2:00 or 2:15 finish
| Mile | Climb | Descent | 1:45 | 2:00 | 2:15 |
|---|---|---|---|---|---|
| 1 | 3 ft | 17 ft | 7:55 | 9:03 | 10:11 |
| 2 | 10 ft | 24 ft | 7:56 | 9:04 | 10:12 |
| 3 | 17 ft | 25 ft | 7:57 | 9:05 | 10:13 |
| 4 | 3 ft | 17 ft | 7:56 | 9:04 | 10:12 |
| 5 | 10 ft | 7 ft | 8:00 | 9:09 | 10:18 |
| 6 | 21 ft | 10 ft | 8:05 | 9:14 | 10:23 |
| 7 | 18 ft | 4 ft | 8:06 | 9:15 | 10:25 |
| 8 | 18 ft | 8 ft | 8:04 | 9:14 | 10:23 |
| 9 | 19 ft | 2 ft | 8:07 | 9:17 | 10:26 |
| 10 | 14 ft | 6 ft | 8:03 | 9:12 | 10:21 |
| 11 | 15 ft | 4 ft | 8:05 | 9:13 | 10:23 |
| 12 | 1 ft | 13 ft | 7:56 | 9:05 | 10:12 |
| 13 | 3 ft | 16 ft | 7:56 | 9:04 | 10:12 |
| Last 0.1 | 0 ft | 0 ft | 0:54 | 1:01 | 1:09 |
Explore the Boise Half course with the weather and your pace along the route, or compare it with other races.
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About the Boise Half
The Boise Half Marathon is a 13.1-mile race held in mid-November in Boise, Idaho. The race is based at Julia Davis Park and follows the Boise Greenbelt along the Boise River. A virtual option runs alongside the in-person race. All runners receive a shirt and a medal.
