Saturday, January 9, 2027Arvada, CO

All-Out Polar Prowl

3 events

Half MarathonHalfRoadStarts 9:00 AM
10K10KRoadStarts 9:10 AM
5K5KRoadStarts 9:20 AM

Half MarathonHalfRoadStarts 9:00 AM
10K10KRoadStarts 9:10 AM
5K5KRoadStarts 9:20 AM

Location

Approximate, from the race's ZIP code.

Typical race-day weatherGood weather · 75/100

High / low: 41° / 21°F; 5° / -6°C
Humidity: 57%; Dew point 15°F
Chance of rain: 19%
Wind: 10 mph; Average

Usually cold for a half marathon: about 28°F while racing.

Averages for this area and time of year over the last 20 years, from NASA POWER data. Not a forecast.

Past results

Typical timesFinish times are typical for 5Ks.4 years, 495 finishers; men and women compared separately.
Typical timesFinish times are typical for half marathons.4 years, 348 finishers; men and women compared separately.
Typical timesFinish times are typical for 10Ks.4 years, 335 finishers; men and women compared separately.

Year	Event	Finishers	Median	Men	Women
2026	Half Marathon · Half	89	2:05:12	1:51:08	2:17:23
2026	10K · 10K	79	1:04:16	59:30	1:06:02
2026	5K · 5K	170	36:16	30:30	37:34
2025	Half Marathon · Half	80	2:09:18	1:56:19	2:23:24
2025	10K · 10K	90	1:09:02	1:08:56	1:09:08
2025	5K · 5K	123	33:27	30:33	37:28
2024	Half Marathon · Half	101	2:07:46	1:59:30	2:17:40
2024	10K · 10K	87	1:00:16	57:46	1:04:10
2024	5K · 5K	123	35:15	30:49	37:38
2023	Half Marathon · Half	78	2:06:55	2:00:29	2:08:19
2023	10K · 10K	79	1:05:07	59:03	1:07:48
2023	5K · 5K	79	39:02	37:58	39:36

Median finish times from results published on RunSignup. Keyrace keeps only these summaries, never individual results. A fast or slow field affects times as much as the course does.

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