Saturday, December 19, 2026Fountain Valley, CA

Winter Whirl – 5K, 10K, Half Marathon

3 events

Half MarathonHalfRoadStarts 8:00 AM
5k5KRoadStarts 8:30 AM
10K10KRoadStarts 8:30 AM

Half MarathonHalfRoadStarts 8:00 AM
5k5KRoadStarts 8:30 AM
10K10KRoadStarts 8:30 AM

Location

Approximate, from the race's ZIP code.

Typical race-day weatherIdeal weather · 91/100

High / low: 63° / 56°F; 17° / 13°C
Humidity: 70%; Dew point 48°F
Chance of rain: 24%
Wind: 8 mph; Average

Usually ideal weather for a half marathon.

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 5Ks.3 years, 169 finishers; men and women compared separately.
Typical timesFinish times are typical for half marathons.2 years, 85 finishers; men and women compared separately.
8% slowerFinish times are typically 8% slower than at other 10Ks.1 year, 54 finishers; men and women compared separately.

Year	Event	Finishers	Median	Men	Women
2025	Half Marathon · Half	19	2:17:11	2:15:08	2:23:28
2025	10-Miler · 10 mi	3	1:38:22	—	—
2025	10K · 10K	17	1:08:41	1:07:56	1:08:41
2025	5k · 5K	27	36:17	32:59	44:24
2024	Half Marathon · Half	64	2:06:34	2:00:48	2:07:52
2024	10K · 10K	54	1:11:48	1:02:40	1:11:50
2024	5k · 5K	113	34:23	29:28	37:11
2023	Half Marathon · Half	21	2:23:36	2:08:51	2:36:48
2023	15k · 15K	3	1:30:56	—	—
2023	10K · 10K	15	1:05:57	51:24	1:07:58
2023	5k · 5K	29	30:50	27:09	33:40

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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