Griffith Park Trail Half Marathon

Los Angeles, CA, USA · November 21, 2026
clear-day47°·53° high·Light·Dry
10
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Griffith Park Trail Half Marathon race day weather

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47°at start
58° high
Breezy
Dry
Your goal
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Cool start — fast day potential, warming through the race

A cool 47°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 58°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.

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About the Griffith Park Trail Half Marathon

The Griffith Park Trail Half Marathon runs about 13.7 miles on singletrack and fire road, starting and finishing at the Merry-Go-Round lot. The route passes the Joe Klass and Bird Sanctuary areas and reaches the Mineral Wells area near mile 8.5 before returning through the park. It is run on the Saturday of race weekend with roughly 2,700 feet of climbing and a high point near 1,540 feet.

Race weekend

Saturday, November 21
6:30 AM50K (31.1 mi)7:00 AM30K (18.6 mi)
7:00 AMHalf Marathon (13.1 mi)
7:00 AM10K (6.2 mi)
Area Map
Course Map

Griffith Park Trail Half Marathon FAQ

When is the 2026 Griffith Park Trail Half Marathon?

The 2026 Griffith Park Trail Half Marathon will be held on Saturday November 21, 2026.

What is the time limit for the Griffith Park Trail Half Marathon?

The time limit for the Griffith Park Trail Half Marathon is 9 hours.

What will the weather be like for the 2026 Griffith Park Trail Half Marathon?

The forecast calls for a high of 58°F and a low of 43°F with a 3% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

What is the weather usually like for the Griffith Park Trail Half Marathon?

Over the 8 years racecast.io has race-day weather for (2022 to 2026), it averaged 52°F at the start and 60°F by a typical finish. Rain fell during race hours in 1 of those years (2024).

What was the hottest Griffith Park Trail Half Marathon?

Of the 8 years on record, 2026 was the warmest, reaching 67°F during race hours. The coldest start was 2025, at 44°F.

What was the windiest Griffith Park Trail Half Marathon?

Of the 8 years on record, 2023 was the windiest, with wind averaging 6 mph during race hours. The calmest was 2025, at 1 mph.

Griffith Park Trail Half Marathon weather history

Based on 8 years of data
Avg Temp
56°F
L:52° H:60°
RunScore
9
Conditions
Rain Freq
13%
1 of 8 yrs
Wind2mph
Dew42°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
58°/67°-
7
2025
partly-cloudy-day
57°/63°-
7
2025
clear-day
44°/53°-
10
2024
partly-cloudy-day
52°/58°-
9
2024
rain
50°/53°Light
10
2023
cloudy
56°/58°-
7
2022
clear-day
47°/62°-
10
2022
clear-day
51°/65°-
10