Frosty Half Marathon
Frosty Half Marathon race day weather
Cool start, mild finish ahead
Runners will face temperatures starting at 38°F and gradually rising to 41°F by the finish. A light west wind at 11 mph will provide a mix of crosswinds and tailwinds, with headwinds making segments tough from Miles 6-7 and 12-14. With humidity at 69%, pacing should be conservative early on to maintain energy for the latter miles.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Frosty Half Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Frosty Half Marathon route and elevation
The Frosty Half Marathon course has about 422 ft (129 m) of climbing and 421 ft (128 m) of descent, and finishes near the elevation it starts. It is hillier than 84% of the half marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 10, with 109 ft (33 m) of climbing and a 1.7% average grade.
Biggest climbs
- Miles 1.2 to 2.8: climbs about 80 ft (25 m).
- Miles 6.9 to 7.3: climbs about 50 ft (16 m).
- Miles 8.7 to 10.1: climbs about 115 ft (35 m).
What the hills cost
- 1:45 on a flat course is about 1:46 here (1 minute slower).
- 2:00 on a flat course is about 2:01 here (1 minute slower).
- 2:15 on a flat course is about 2:16 here (1 minute 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 | 8 ft | 30 ft | 7:50 | 8:57 | 10:05 |
| 2 | 52 ft | 8 ft | 8:17 | 9:29 | 10:39 |
| 3 | 37 ft | 9 ft | 8:10 | 9:19 | 10:30 |
| 4 | 0 ft | 94 ft | 7:35 | 8:41 | 9:45 |
| 5 | 39 ft | 29 ft | 8:01 | 9:09 | 10:18 |
| 6 | 49 ft | 28 ft | 8:06 | 9:15 | 10:24 |
| 7 | 46 ft | 58 ft | 7:53 | 9:01 | 10:09 |
| 8 | 43 ft | 70 ft | 7:49 | 8:56 | 10:03 |
| 9 | 34 ft | 17 ft | 8:04 | 9:14 | 10:23 |
| 10 | 109 ft | 17 ft | 8:43 | 9:57 | 11:12 |
| 11 | 5 ft | 42 ft | 7:47 | 8:54 | 10:00 |
| 12 | 18 ft | 55 ft | 7:47 | 8:54 | 10:01 |
| 13 | 31 ft | 17 ft | 8:03 | 9:11 | 10:21 |
| Last 0.1 | 5 ft | 2 ft | 0:55 | 1:03 | 1:10 |
Explore the Frosty Half Marathon course with the weather and your pace along the route, or compare it with other races.
Get your personalized Frosty Half Marathon race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
About the Frosty Half Marathon
The Frosty Half Marathon is a half marathon in Raynham, Massachusetts, put on by the Colonial Road Runners in early December. It starts and finishes at Raynham Middle School and runs on country roads and mostly quiet residential streets, with one challenging hill at mile 10. Entries are capped at 600 runners, and everyone must be off the course within three hours, with an early start for slower runners.
