Interlaken Icicle Dash
Seattle, United States • 31 Jan 2026
Interlaken Icicle Dash : event overview
Interlaken Icicle Dash takes place on January 31, 2026, at Interlaken Park in Seattle, WA. It is the seventh and final event in the 2025-26 Winter Trail Series. Distances offered:
- 5k
- 10k
A youth runner discount of $10 applies to any runner under 20 for online pre-registration or day-of registration. The event is part of a multi-race series that awards points based on up to four best performances and offers series swag for participants who complete four or more events.
Course and logistics
The course uses Interlaken Boulevard - a wide, paved road closed to motorized traffic through the park - and nearby dirt trails. Each loop is 2.5 km; the 5k is two loops and the 10k is four loops. The route includes a short staircase and a climb to the top of the park before returning to the start/finish area.
An aid station is located at the start/finish. Runners pass it at 2.5 km on the 5k, and at 2.5 km, 5 km, and 7.5 km on the 10k. The aid station provides water, an electrolyte drink, and carbohydrate-rich or salty foods such as energy bars, gels, chews, cookies, chips, bagels, and bananas. Street parking is available adjacent to check-in and the start/finish. Dogs are not allowed on the course. Visit the organization's website for the most recent information.