Seattle Marathon: Summer Events
Seattle Marathon's Summer Events offer a fast, certified course with a strong local following.
Race Date
Jun 27, 2026
Location
Seattle, WA
Quick facts
- Date
- Saturday, June 27, 2026
- Location
- Seattle, Washington
- Distance
- Half marathon (13.1 mi) + 26.2M
- Course
- Point to Point
- Terrain
- Road
- USATF certified
- Yes
- Finishers on record
- 111,859
Highlights
Good For
Atmosphere
Course
The Experience
The Seattle Marathon Summer Events have carved out a significant niche since their first running in 1994, now celebrating over two decades of racing. With 27 editions on record, the event has seen consistent growth, attracting a median of approximately 4,434 finishers in recent years. This loyalty is underscored by a repeat-runner rate of around 23%, indicating a dedicated community that returns year after year.
The course is a certified, fast-paced route, designed to favor strong performances. While the specific details of the summer event's course are not detailed, the Seattle Marathon is known for its flat profile, with minimal elevation gain and loss, making it a prime location for runners targeting personal bests or Boston Marathon qualifying times.
The event typically takes place in late fall, though the "Summer Events" designation might imply a different timing or a series of races. Runners can expect cool, crisp Seattle weather, often with overcast skies and a moderate breeze, contributing to a comfortable racing environment. The atmosphere is generally one of focused competition, with a solid base of local support and a growing field depth.
Race-provided description
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Course Info
USATF CertifiedCourse Type
Point to Point
Terrain
road
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
+1.33 m
Separation
5.3%
Also Offers
USATF Certified Course
WA25020RMB · Seattle Half Marathon
Net downhill course — fast finishing times are common.
Quality Score
Standout7827 years running
~4,434 finishers a year
growing or steady
23% returning runners
USATF certified · 2 timing sources
runners from 1 state
winner 1:06:44
typical high 47°F
Race Day Weather
5-year historical avgStart (Low)
39°
Afternoon (High)
47°
Cool conditions — dress in layers, perfect for fast times
0.2"
Precipitation
12 mph
Wind
86%
Humidity
Historical Finish Times
How 111,859 finishers actually crossed the line across 27 years.
Most recent
2025
Total finishers
111,859
Median time
2:09:00
Latest turnout
4,434
States
51
Turnout by year
2018–2025
Hover the histogram to inspect specific finish times.
Frequently asked
When is the Seattle Marathon: Summer Events?
The Seattle Marathon: Summer Events is held on Saturday, June 27, 2026.
Where does the Seattle Marathon: Summer Events take place?
It takes place in Seattle, Washington.
What distances does the Seattle Marathon: Summer Events offer?
The half marathon (13.1 miles), plus 26.2M.
Is the Seattle Marathon: Summer Events course flat and good for a PR?
The Seattle Marathon: Summer Events is a ultra-flat, point to point course. The course is USATF-certified, so finish times can be used for qualifying.
How many people run the Seattle Marathon: Summer Events?
HalfRuns has finish records for 111,859 runners who have completed the Seattle Marathon: Summer Events.
HalfRuns editorial — independent, no paid placement.
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