Sunday, March 21, 2027Golden, CO

All-Out Spring Fever

3 events

Half MarathonHalfRoadStarts 9:00 AM
10K10KRoadStarts 9:30 AM
5K5KRoadStarts 9:40 AM

Half MarathonHalfRoadStarts 9:00 AM
10K10KRoadStarts 9:30 AM
5K5KRoadStarts 9:40 AM

Location

Approximate, from the race's ZIP code.

Typical race-day weatherFair weather · 64/100

High / low: 40° / 17°F; 4° / -8°C
Humidity: 70%; Dew point 18°F
Chance of rain: 39%
Wind: 9 mph; Average

Usually cold for a half marathon: about 25°F while racing.
Rain on about 39% of days around this date.

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

Past results

5% fasterFinish times are typically 5% faster than at other half marathons.4 years, 671 finishers; men and women compared separately.
Typical timesFinish times are typical for 5Ks.4 years, 592 finishers; men and women compared separately.
4% slowerFinish times are typically 4% slower than at other 10Ks.4 years, 548 finishers; men and women compared separately.

Year	Event	Finishers	Median	Men	Women
2026	Half Marathon · Half	179	2:08:40	2:03:11	2:16:54
2026	10K · 10K	172	1:05:58	1:01:26	1:09:04
2026	5K · 5K	216	36:57	30:33	38:06
2025	Half Marathon · Half	152	2:07:42	1:58:14	2:12:43
2025	10K · 10K	157	1:08:23	1:01:18	1:11:40
2025	5K · 5K	131	36:39	35:04	36:51
2024	Half Marathon · Half	176	2:04:42	1:57:58	2:07:43
2024	10K · 10K	112	1:06:09	1:01:14	1:09:26
2024	5K · 5K	115	34:59	32:20	37:45
2023	Half Marathon · Half	164	2:04:04	1:58:22	2:11:16
2023	10K · 10K	107	1:06:18	56:22	1:08:36
2023	5K · 5K	130	35:49	35:18	36:09

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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