Redmond Harvest Half Marathon
Redmond Harvest Half Marathon offers a fast, flat out-and-back course through Marymoor Park and along the Sammamish River Trail.
Race Date
Sep 7, 2026
Location
Redmond, WA
Quick facts
- Date
- Monday, September 7, 2026
- Location
- Redmond, Washington
- Distance
- Half marathon (13.1 mi)
- Course
- Out & Back
- Terrain
- Road
- USATF certified
- Yes
- Finishers on record
- 3,103
Highlights
Good For
Atmosphere
Course
The Experience
The Redmond Harvest Half Marathon, held annually on Labor Day Monday, unfolds from Redmond's Marymoor Park. This race is a popular choice for runners seeking a fast, flat out-and-back course, with much of the route following the scenic Sammamish River Trail.
With recent finisher numbers around ~2,764 and runners coming from approximately 20 states, the Harvest Half has established itself as a growing event. The course is designed for speed, featuring minimal elevation change and a net drop that favors personal bests. This certified course is a prime opportunity for runners aiming to achieve their goals, whether it's a first half-marathon or a new PR.
Put on by the Lake Sammamish Run Club and Seattle United Runners, the event fosters a local community feel, though it also attracts participants from out of town. The ~22% repeat-runner rate suggests a loyal following. The race offers gender-specific t-shirts as part of its giveaway, and day-of packet pickup is a convenient perk for travelers.
Race-provided description
Harvest the fruits of your training at the Redmond Harvest Half Marathon, to be held Labor Day Monday (September 7, 2026)! Starting from Redmond’s Marymoor Park, the Harvest Half is a fast, flat out-and-back half-marathon that goes west out of Marymoor Park and north on the Sammamish River Trail before returning to the start. Whether this is your first half-marathon, or you are experienced with this distance, this 13.1-mile course will give you an opportunity for your running goals to come to fruition. Come support a local race put on by Lake Sammamish Run Club and Seattle United Runners and finish your summer with a bang.
Logistics
Race Day
Monday, September 7, 2026
Start Time
8:30 AM
Giveaway
T-Shirt (gender-specific)
Start Location
Marymoor Park, Redmond, WA, 98052
Course Info
USATF CertifiedCourse Type
Out & Back
Terrain
road
Scenery
Lake River, Park
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.1%
USATF Certified Course
WA23028RMB
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Quality Score
Standout693 years running
~1,011 finishers a year
growing or steady
22% returning runners
USATF certified · 5 timing sources
runners from 20 states
winner 1:05:10
typical high 76°F
Race Day Weather
5-year historical avgStart (Low)
55°
Afternoon (High)
76°
Warm — hydration strategy is key, start conservatively
0.0"
Precipitation
7 mph
Wind
74%
Humidity
Historical Finish Times
How 3,103 finishers actually crossed the line across 3 years.
Most recent
2025
Total finishers
3,103
Median time
1:56:04
Latest turnout
2,082
States
25
Turnout by year
2023–2025
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the Redmond Harvest Half Marathon?
The Redmond Harvest Half Marathon is held on Monday, September 7, 2026, starting at 8:30 AM.
Where does the Redmond Harvest Half Marathon take place?
It takes place in Redmond, Washington.
What distances does the Redmond Harvest Half Marathon offer?
The half marathon (13.1 miles).
Is the Redmond Harvest Half Marathon course flat and good for a PR?
The Redmond Harvest Half Marathon is a ultra-flat, out & back course. The course is USATF-certified, so finish times can be used for qualifying.
How many people run the Redmond Harvest Half Marathon?
HalfRuns has finish records for 3,103 runners who have completed the Redmond Harvest Half Marathon.
HalfRuns editorial — independent, no paid placement.
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