The 2026 Beat the Blerch Half Marathon has concluded.Share your finish

Beat the Blerch Half Marathon

Race complete
Carnation, WA, USA · September 12, 2026
partly-cloudy-day57°·62° high·Light·Dry
7
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Race Day Weather

partly-cloudy-day
57°at start
66° high
Light
Dry
Your goal
0:00:00

Comfortable temps

Mild 57°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 66°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. Moderate humidity at 67% is worth noting for effort level, especially in later miles.

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Race Info

The Beat the Blerch Half Marathon is an out-and-back run that starts and finishes at Tolt-MacDonald Park in Carnation, Washington, on the Saturday of race weekend. The course is flat and runs on the gravel Snoqualmie Valley Trail through evergreen, mossy forest. Aid stations along the route serve electrolyte drink, water and gels along with the event's Nutella sandwiches and birthday cake, and costumed Blerch characters are part of the scenery.

Race weekend

Saturday, September 12
8:00 AMMarathon (26.2 mi)
9:00 AMHalf Marathon (13.1 mi)
9:30 AM10K (6.2 mi)12:00 PM5K (3.1 mi)

FAQ

When is the 2026 Beat the Blerch Half Marathon?

The 2026 Beat the Blerch Half Marathon will be held on Saturday September 12, 2026.

What is the time limit for the Beat the Blerch Half Marathon?

The time limit for the Beat the Blerch Half Marathon is 6 hours.

What will the weather be like for the 2026 Beat the Blerch Half Marathon?

The forecast calls for a high of 66°F and a low of 54°F with a 0% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 10 years of data
Avg Temp
63°F
L:61° H:66°
RunScore
6
Conditions
Rain Freq
10%
1 of 10 yrs
Wind6mph
Dew53°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
57°/62°-
7
2025
cloudy
61°/65°-
6
2024
clear-day
68°/72°-
4
2023
clear-day
60°/66°-
6
2022
clear-day
66°/74°-
5
2018
partly-cloudy-day
56°/60°-
8
2017
partly-cloudy-day
56°/63°-
8
2016
rain
58°/61°Light
6
2015
clear-day
65°/71°-
5
2014
cloudy
60°/63°-
6