Whitehorse Half Marathon
Whitehorse Half Marathon: a community run honoring resilience through the Stillaguamish Valley.
Race Date
Mar 27, 2027
Location
Arlington, WA
Quick facts
- Date
- Saturday, March 27, 2027
- Location
- Arlington, Washington
- Distance
- Half marathon (13.1 mi)
- Course
- Out & Back
- Terrain
- Mixed
- USATF certified
- Not listed
Highlights
Good For
Atmosphere
Course
The Experience
The Whitehorse Oso Strong Half Marathon offers a meaningful 13.1-mile out-and-back journey through the Stillaguamish Valley. This community-centered event, first run in 2026, is designed for runners and walkers of all levels.
The course winds through forested landscapes and open valleys, starting and finishing at the Miller Shingle Trailhead. A significant aspect of the run is its passage through the grounds of the Oso Slide Memorial, adding a layer of remembrance and resilience to the experience.
With a typical field of around 69 participants, this race emphasizes community and a shared purpose. Participants receive chip-timed results, a finisher medal, and an event t-shirt for early registration, with awards for the top finishers and post-race refreshments.
Race-provided description
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Whitehorse Half Marathon
YEAR 1 | Total Participants to 2026: 83 $ 1,000 Contributed for OSO Strong Est. 2026
👉 See you in 2027 (https://www.google.com/url?q=https%3A%2F%2Fwhitehorse.itsyourrace.com%2F&sa=D&sntz=1&usg=AOvVaw01kHF2bYIKYmpycG0U0qHN)
About the Event
The Whitehorse Oso Strong Half Marathon is a community-centered, recreational 13.1-mile out-and-back run through the serene beauty of the Stillaguamish Valley. Beginning and ending at the Miller Shingle Trailhead, this event invites participants to run or walk through forested landscapes, open valleys, and the meaningful grounds of the Oso Slide Memorial. Open to both runners and walkers, this non-competitive event is designed for all levels.
Participant Amenities
All registered participants will receive: Chip-timed results
Finisher Medal
Event T-Shirt for registrations completed by March 15
Awards for the Top 3 Overall Male and Female Fini
Logistics
Race Day
Saturday, March 27, 2027
Start Time
TBA
Start Location
21021 State Rte 530 NE, Arlington, WA, 98223
Course Info
Course Type
Out & Back
Terrain
mixed
Scenery
Forest, Rural
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Quality Score
1 year running
~69 finishers a year
growing or steady
0% returning runners
7 timing sources · 4 photos
no finisher data yet
winner 1:35:15
typical high 56°F
Race Day Weather
5-year historical avgStart (Low)
39°
Afternoon (High)
56°
Ideal racing weather — cool and comfortable
0.2"
Precipitation
8 mph
Wind
79%
Humidity
Race Photos
Frequently asked
When is the Whitehorse Half Marathon?
The Whitehorse Half Marathon is held on Saturday, March 27, 2027.
Where does the Whitehorse Half Marathon take place?
It takes place in Arlington, Washington.
What distances does the Whitehorse Half Marathon offer?
The half marathon (13.1 miles).
Is the Whitehorse Half Marathon course flat and good for a PR?
The Whitehorse Half Marathon is a ultra-flat, out & back course.
HalfRuns editorial — independent, no paid placement.
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