Mud Mountain Dam Marathon (Spring)

Enumclaw, WA, USA · May 29, 2027
partly-cloudy-day41°·51° high·Light·Dry
10
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Race Day Weather

partly-cloudy-day
41°at start
54° high
Light
Rain possible

Cool start — fast day potential, warming through the race, chance of rain

A cool 41°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 54°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. There's a chance of rain, so have a backup gear plan ready. Moderate humidity at 71% is worth noting for effort level, especially in later miles.

Race day forecast available in 242 days
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Distance: 26.2mi
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Race Info

The Mud Mountain Dam Marathon (Spring) is a USATF-certified point-to-point marathon that starts at Mud Mountain Dam near Enumclaw, Washington and finishes at the historic McMillin Bridge, with a net elevation loss of about 1,200 feet. The paved course follows the Foothills Rail Trail and Carbon River through South Prairie and Buckley. It is organized by the Tacoma City Marathon Association and is a Boston Marathon qualifying race with no downhill time-adjustment penalty. A companion Fall edition of the Mud Mountain Dam Marathon runs the same course each September.

FAQ

When is the 2027 Mud Mountain Dam Marathon (Spring)?

The 2027 Mud Mountain Dam Marathon (Spring) will be held on Saturday May 29, 2027.

Is the Mud Mountain Dam Marathon (Spring) a Boston Marathon Qualifier?

Yes, the Mud Mountain Dam Marathon (Spring) is an official Boston Marathon qualifier.

What is the time limit for the Mud Mountain Dam Marathon (Spring)?

The time limit for the Mud Mountain Dam Marathon (Spring) is 6 hours.

What will the weather be like for the 2027 Mud Mountain Dam Marathon (Spring)?

The forecast calls for a high of 57°F and a low of 38°F with a 17% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 1 years of data
Avg Temp
54°F
L:48° H:59°
RunScore
9
Conditions
Rain Freq
0%
0 of 1 yrs
Wind4mph
Dew42°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
48°/59°-
9