Winter Whirl Half Marathon

Fountain Valley, CA, USA · December 19, 2026
partly-cloudy-day54°·60° high·Light·Dry
9
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Race Day Weather

partly-cloudy-day
54°at start
62° high
Light
Dry

Comfortable temps

Mild 54°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 62°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 26 days
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Pace Calculator

Distance: 13.1mi
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Race Info

Winter Whirl is a half marathon, 10K and 5K held on a Saturday in mid-December at Mile Square Park in Fountain Valley, California. The half marathon starts at 8:00 AM from Parking Lot D and follows the park's paths on a looped route with an added out-and-back. The course is open to other path users and closes after 3 hours and 10 minutes. High Tide Runs organizes the race.

Area Map

Course Map

FAQ

When is the 2026 Winter Whirl Half Marathon?

The 2026 Winter Whirl Half Marathon will be held on Saturday December 19, 2026.

What is the time limit for the Winter Whirl Half Marathon?

The time limit for the Winter Whirl Half Marathon is 3.17 hours.

What will the weather be like for the 2026 Winter Whirl Half Marathon?

The forecast calls for a high of 63°F and a low of 52°F with a 8% chance of rain.

Historical Weather

Based on 2 years of data
Avg Temp
64°F
L:56° H:64°
RunScore
8
Conditions
Rain Freq
0%
0 of 2 yrs
Wind3mph
Dew42°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
cloudy
56°/62°-
8
2024
clear-day
56°/66°-
9