Seward Solstice Run
Seattle, Washington, United States
Dec 19, 2026 - Saturday
4.2mi, 10k
Race Information
Situated on a peninsula surrounded by Lake Washington, Seward Park provides perhaps one of the greatest contrasts in Seattle: 100+ acres of old-growth forest, just minutes from the city center. The run route follows a loop that is almost entirely in the forest, so there is ample opportunity to enjoy what the Friends of Seward Park fondly call “The Magnificent Forest,” with graceful Western Red Cedar and towering Douglas Fir, along with a lush tapestry of other native plants. You may even hear a Pileated Woodpecker pecking out a nest or rooting for a meal in an old tree trunk.
Join a 4.2-mile or 10k trail run at Seward Solstice, the fourth event in the Winter Trail Series.
Related Events
Carkeek Cooler Trail Run
Date: Nov 7, 2026 - Saturday
Size: 100 - 500 participants
Location: Seattle, Washington
Ravenna Refresher Trail Run
Date: Nov 21, 2026 - Saturday
Size: 100 - 500 participants
Location: Seattle, Washington
Redmond Reindeer Romp
Date: Dec 5, 2026 - Saturday
Size: 100 - 500 participants
Location: Redmond, Washington
Seward Solstice Run
Date: Dec 19, 2026 - Saturday
Size: 100 - 500 participants
Location: Seattle, Washington
Absolution Run
Date: Jan 3, 2027 - Sunday
Size: 100 - 500 participants
Location: Kenmore, Washington
Frost Eagle Trail Run
Date: Jan 16, 2027 - Saturday
Size: 100 - 500 participants
Location: Sammamish, Washington
Interlaken Icicle Dash
Date: Jan 30, 2027 - Saturday
Size: 100 - 500 participants
Location: Seattle, Washington
👍 Run Pick of the Month - B&O Half Marathon
📍 Orting, WA - July 19, 2026
Experience summer running in the PNW!
💸 SAVE 10% On Your Entry. Use Code RG10
😄 Why We Like This Run
✅ Point-to-point net downhill half marathon and a flat 10K
✅ Stunning Mount Rainier views
✅ Finisher's shirt and custom medal
The B&O Half Marathon delivers a high-speed Pacific Northwest race experience with a net downhill course built for PRs and a flat, fast 10K to match.
Running along a smooth rails-to-trails path beneath Mount Rainier, this event combines scenic beauty, effortless miles, and a fun, relaxed finish-line vibe with treats and a welcoming community feel!
Get a Training Plan for this Run
Receive 2 FREE Weeks of personalised run training from our friends at Runna
The Runna app, the ultimate running coach in your pocket, gives you personalised programs that sync with your favourite devices, includes strength and mobility training, and offers complete support.
You get 2 weeks for free!
Learn more about Runna. Click the link below.
🏃 Looking For More Runs Near Seattle?
Find another distance:
Race Facts
Race Size: 100 - 500
Elevation: Some Hills
Course Type: Trail
Boston Qualifier: No
Kids Run: No
Where to Stay
Use this map to find hotels and airbnb accommodation near this race location.
