• Skip to main content
  • Skip to primary sidebar
  • Skip to footer
  • Home
  • Shop
    • Accessories
    • Men’s & Unisex Fit
    • Women’s Fit
    • Featured
    • Latest
    • Cart
  • Calendar
  • Gear
  • Destinations
  • Archive
  • Forum
  • Members
    • Register
    • Login
    • Logout
  • Cart

Northwest in Motion

Inspiring, informing, and connecting cyclists, runners, hikers, and skiers

Home » Events » Trail Run » Winter Trail Series: Seward Solstice Run 4.2mi | 10k » Winter Trail Series: Seward Solstice Run 4.2mi | 10k

Use this calendar for planning purposes only.

Event details subject to change!

Pre-registration is strongly recommended! During COVID, most event organizers do not have on-site registration. You are responsible for following event organizers' COVID procedures.

To confirm event status (sold out, cancellations, schedule changes, COVID restrictions, etc.), visit the event website link below.

Loading Events

« All Events

Winter Trail Series: Seward Solstice Run 4.2mi | 10k

December 20, 2025 @ 8:30 am - 12:00 pm PST

|Recurring Event (See all)

An event every year that begins at 8:30 am on day third of December, repeating until December 20, 2025

  • « November Project | Seattle-Fridays
  • Seattle Running Club Sunday Trail Run »

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 Northwest Trail Runs for a 4.2-mile or 10k trail run at Seward Solstice, the fourth event in their Winter Trail Series.

Course Description

The loop route starts out on the wide and smooth main trail, which is flat-to-rolling before dipping downhill toward the tip of the peninsula. Just before the main trail emerges from the forest onto the waterfront promenade, the course takes a left turn onto the smaller trails that climb and traverse the Western side of the peninsula. A few-hundred-meter segment of this return stretch features a twisty-turny section, with several small fallen trees to leap over and some roots and other bumps to negotiate. This will give most runners a breather as they slow down a bit before the trails get wider and straighter again toward the end of the loop.

Schedule

8:30am – Check-in and day-of-event registration opens
9:22am – Pre-start briefing
9:30am – Start**
12:00pm – Course closes

* The schedule is subject to change, per the COVID-19 measures in place on the date of the run.

Directions & Parking

The start/finish will be located close to the second parking lot. When entering the park, pass the first parking lot on your left (near the beach and pottery studio) and continue up the hill on Seward Park Rd. until you see a parking lot on the right.

Related

Support Small & Local Businesses: Shop Northwest in Motion

We source directly from small and family-owned businesses in Italy and Europe.

This enables us to sell unique, high-quality fitness attire at reasonable prices.

Get updates about the freshest additions to our inventory: Subscribe, or follow us on Twitter, Facebook, or Instagram.
  • Google Calendar
  • iCalendar
  • Outlook 365
  • Outlook Live

Details

Date:
December 20, 2025
Time:
8:30 am - 12:00 pm
PST
Event Category:
Trail Run
Website:
https://nwtrailruns.com/events/seward-solstice-run/

Organizer

Northwest Trail Runs
View Organizer Website

Venue

Seward Park Upper Parking Lot
Seward Park Rd
Seattle, WA 98118 United States
+ Google Map
View Venue Website

Related Events

  • Interlaken Ice Cream Dash 5K | 10K

    Interlaken Ice Cream Dash 5K | 10K

    August 16 @ 5:30 pm - 8:30 pm PDT
    |Recurring Event (See all)

    An event every year that begins at 5:30 pm on day third of August, repeating until August 19, 2025

  • Hamster Endurance Runs: 6 hour | 12 hour | 24 hour | 32 hour

    Hamster Endurance Runs: 6 hour | 12 hour | 24 hour | 32 hour

    August 20 - August 21
    |Recurring Event (See all)

    An event every year that begins at 12:00 am on day third of August, repeating until September 21, 2025

  • The Squamish 50 Races

    The Squamish 50 Races

    August 20 - August 21
    |Recurring Event (See all)

    An event every year that begins at 12:00 am on day third of August, repeating until October 19, 2025

Reader Interactions

Leave a Reply Cancel reply

You must be logged in to post a comment.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

  • « November Project | Seattle-Fridays
  • Seattle Running Club Sunday Trail Run »

To confirm event status (sold out, cancellations, COVID restrictions, etc.), be sure to visit the event website above.

Pre-registration is strongly recommended! During COVID, most event organizers do not have on-site registration. You are responsible for following event organizers' COVID procedures.

Reader Interactions

Leave a Reply Cancel reply

You must be logged in to post a comment.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Primary Sidebar

Inspired | Informed | Connected

We’re here to inspire, inform, and connect you with like-minded cyclists, runners, and fitness enthusiasts.

Running in the rainNorthwest in Motion was created by David Longdon, and is produced with a cadre of creative collaborators.

Bellevue pop up Italian Home & Kitchen
Francesca Carmichael manages our retail experiences.

Gear Wisdom

About our Brands
Merino Wool Works in the PNW
Road Rash Wound Care
How to Layer for the Pacific Northwest
Gearing up for a Bikepacking Epic
Women Gear Up for Bikepacking
Gearing Up for Bikepacking
How to Choose Cycling Shorts
Swiftwick Merino Wool @ Bridle Trails
How to Wash your Kit

Bicycle Helmet Safety Ratings
Hi Vis Helmet Hack

The n + 1: Platypus Tokul XC 8.0 & B-Line 8.0
The n + 1: Oakley Flak 2.0 XL w/ Day & Night Contrast Lenses
The n + 1: Roka Eyewear
The n + 1: Sensity Photochromic Lenses
The n + 1: Bialetti Moka Express

More Gear Reviews & Tips

Connect

Login or Register to comment and participate in the Forum.

Subscribe to our email Newsletter to get content and inventory updates.

Search Posts

Follow

Share

Footer

About
Contact

Partner
Advertise
Subscribe

Returns and Shipping Policy
Terms of Use
Privacy

Copyright © 2022 · Magazine Pro on Genesis Framework · WordPress · Log in