Avenue of the Giants Half Marathon

Eureka, CA, USA · May 2, 2027·
partly-cloudy-day55°·62° high·Light·Dry
8
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Race Day Weather

partly-cloudy-day
55°at start
67° high
Light
Dry
Your goal
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Comfortable temps, warming through the race

Mild 55°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 67°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 204 days
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Pace Calculator

Distance: 13.1mi
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Race Info

The Avenue of the Giants Half Marathon runs 13.1 miles as a single out-and-back along the Avenue of the Giants in Humboldt Redwoods State Park, entirely on paved road beneath old-growth redwood canopy. The route is the marathon's second-half course, adopted after an earlier version that used the marathon's first leg. It stays mostly shaded and largely flat, with one notable rise through the town of Weott near the turnaround. Start and finish are at the Bull Creek Flats Road underpass near Weott, on a USATF-certified, Boston Marathon-qualifying course.

Race weekend

Sunday, May 2
7:45 AMMarathon (26.2 mi)
8:30 AMHalf Marathon (13.1 mi)
8:30 AM10K (6.2 mi)
Area Map

Course Map

FAQ

When is the 2027 Avenue of the Giants Half Marathon?

The 2027 Avenue of the Giants Half Marathon will be held on Sunday May 2, 2027.

What is the time limit for the Avenue of the Giants Half Marathon?

The time limit for the Avenue of the Giants Half Marathon is 5 hours.

What will the weather be like for the 2027 Avenue of the Giants Half Marathon?

The forecast calls for a high of 70°F and a low of 49°F with a 6% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 26 years of data
Avg Temp
51°F
L:49° H:54°
RunScore
9
Conditions
Rain Freq
12%
3 of 26 yrs
Wind6mph
Dew47°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
49°/50°-
10
2025
clear-day
46°/54°-
10
2024
cloudy
41°/48°Light
10
2023
cloudy
47°/54°-
10
2022
clear-day
48°/53°-
10
2021
cloudy
57°/59°-
7
2019
cloudy
47°/49°-
10
2018
cloudy
50°/56°-
9
2017
clear-day
48°/52°-
10
2016
clear-day
55°/74°-
6
2015
cloudy
48°/50°-
10
2014
cloudy
55°/55°Light
8
2013
partly-cloudy-day
50°/55°-
9
2012
clear-day
46°/55°-
10
2011
clear-day
44°/50°-
10
2010
clear-day
47°/53°-
10
2009
cloudy
51°/52°-
10
2008
cloudy
48°/49°-
10
2007
clear-day
50°/53°-
10
2006
clear-day
50°/53°-
10
2005
clear-day
53°/56°-
9
2004
fog
50°/56°-
9
2003
rain
50°/52°Light
10
2002
cloudy
47°/50°-
10
2001
clear-day
51°/52°-
10
2000
cloudy
50°/55°-
9