Brooks Lake Sammamish Half Marathon presented by REI
Brooks Lake Sammamish Half Marathon offers a flat, fast course with lake views and strong community support.
Race Date
Mar 6, 2027
Location
Redmond, WA
Quick facts
- Date
- Saturday, March 6, 2027
- Location
- Redmond, Washington
- Distance
- Half marathon (13.1 mi) + 13.1 Miles
- Course
- Point to Point
- Terrain
- Road
- USATF certified
- Not listed
- Finishers on record
- 21,358
Highlights
Good For
Atmosphere
Course
The Experience
The Brooks Lake Sammamish Half Marathon, a local classic now in its 15th year, draws runners from across the nation to Redmond, Washington. This USATF-certified course is renowned for its flat and fast profile, making it a prime location for achieving personal bests. Runners will enjoy scenic views of Lake Sammamish as they traverse the paved East Lake Sammamish Trail.
The event typically sees a growing field, with recent editions attracting around 5,295 finishers, and a notable 24% repeat-runner loyalty, underscoring its enduring appeal. The atmosphere is bolstered by strong community involvement and spectator support along the route, culminating in a festive finish.
Participants receive a chip-timed bib, a participant shirt, and a finisher medal. Aid stations are strategically placed, and the race encourages sustainability with a cupless policy, offering reusable cups at the start. The generous 4-hour time limit also makes it accessible for walkers.
Race-provided description
The Brooks Lake Sammamish Half Marathon presented by REI is a point to point race from Redmond to Sammamish. You will run along the East Lake Sammamish Trail that is fully paved. We also offer a half-marathon walk category with a generous 4 hour time limit. This flat run is perfect for a half-marathon personal best whether you’re running or walking! The race is chip-timed, and each participant will receive a chip-timed bib, participant shirt, and a finisher medal. Aid stations are provided every few miles (see course map). The Lake Sammamish Half is cupless, so you either need to bring a handheld bottle, wear a hydration pack, or we can provide you with a re-useable cup at the start line. VIRTUAL RACE INFO - We have 30 spots for virtual runners. Once they sell out there are no more available. You can run the distance all at once or break it up into chunks and run it on the date of your choosing. You will receive a shirt and medal that will be mailed after the in person race. Check out all the details on our website.
Logistics
Race Day
Saturday, March 6, 2027
Start Time
7:30 AM
Giveaway
Race Tee
Start Location
15670 NE 85th St, Redmond, WA 98052, Redmond, WA, 98052
Course Info
Course Type
Point to Point
Terrain
road
Scenery
Lake River
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
Course Map
View Course Map
Open on Google Maps
1 other map for this race
Quality Score
Runner Favorite8415 years running
~4,029 finishers a year
growing or steady
24% returning runners
5 timing sources
runners from 32 states
winner 1:06:49
typical high 49°F
Race Day Weather
5-year historical avgStart (Low)
32°
Afternoon (High)
49°
Cool conditions — dress in layers, perfect for fast times
0.1"
Precipitation
8 mph
Wind
81%
Humidity
Historical Finish Times
How 21,358 finishers actually crossed the line across 15 years.
Most recent
2026
Total finishers
21,358
Median time
2:03:15
Latest turnout
2,593
States
46
Turnout by year
2018–2026
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the Brooks Lake Sammamish Half Marathon presented by REI?
The Brooks Lake Sammamish Half Marathon presented by REI is held on Saturday, March 6, 2027, starting at 7:30 AM.
Where does the Brooks Lake Sammamish Half Marathon presented by REI take place?
It takes place in Redmond, Washington.
What distances does the Brooks Lake Sammamish Half Marathon presented by REI offer?
The half marathon (13.1 miles), plus 13.1 Miles.
Is the Brooks Lake Sammamish Half Marathon presented by REI course flat and good for a PR?
The Brooks Lake Sammamish Half Marathon presented by REI is a ultra-flat, point to point course.
How many people run the Brooks Lake Sammamish Half Marathon presented by REI?
HalfRuns has finish records for 21,358 runners who have completed the Brooks Lake Sammamish Half Marathon presented by REI.
HalfRuns editorial — independent, no paid placement.
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