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.
Winter Trail Series: Seward Solstice Run 4.2mi | 10k
December 20, 2025 @ 8:30 am - 12:00 pm PST
An event every year that begins at 8:30 am on day third of December, repeating until December 20, 2025
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.
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.
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.
To confirm event status (sold out, cancellations, COVID restrictions, etc.), be sure to visit the event website above.