HalfRuns
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Seattle Marathon: Summer Events

USATF Certified

Saturday, June 27, 2026

Seattle, Washington

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USATFCourse

Course Information

USATF Certified Course

WA23027RMB · Expires 2033

Certified Course Name

Seattle Marathon Summer Half

Net Drop

0.00

m/km

Separation

0.0%

start to finish

This course is relatively flat with minimal net elevation change. Loop course — start and finish are close together.

View USATF Course Map (PDF)

Race Details

Race Day

Saturday, June 27, 2026

Course

Loop

Also Offers

10K5K run | kids run

Registration

Register online

Race Website

Official race information

Historical Weather

☀

Avg High

76°F

☽

Avg Low

57°F

☂

Precip

0.01 in

🍃

Wind

11.7 mph

68% humidity·Based on 5-year historical data

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