Interlaken Icicle Dash

Seattle, United States • 31 Jan 2026

Event overview

Interlaken Icicle Dash is a trail running event in Interlaken Park, Seattle, WA, held on January 31, 2026. It is the seventh and final event in the 2025-26 Winter Trail Series. Distances offered include:

  • 5k
  • 10k

The Winter Trail Series scores participants based on their best four performances. Participants who complete four or more series events earn a pair of limited edition Winter Trail Series socks. Series awards are given in multiple categories, including Female, Open, Masters, Junior, and Youth. A runner must have at least three scored events to be eligible for series awards.

Course and logistics

The course follows an out-and-back pattern on Interlaken Boulevard, a tree-canopied, paved road closed to car traffic, then climbs a short staircase onto dirt trails and returns to the boulevard. Each loop measures 2.5 km; the 5k is two loops and the 10k is four loops.

An aid station at the start/finish provides water, electrolyte drink, and carbohydrate or salty foods. 5k runners pass the aid station at 2.5 km; 10k runners pass it at 2.5 km, 5 km, and 7.5 km. The event begins near 21st Ave E and E Interlaken Blvd, with street parking adjacent to check-in and the start/finish area. Visit the organization's website for the most recent information.

Race information

10 km
10k
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

Tunnel Light Marathon is a marathon in Washington state, running from Snoqualmie Pass to North Bend. It is a point-to-point, USATF Boston Certified course (WA21010RMB) with a downhill grade of about 2.2% and a total elevation loss of just over 2,000 feet, making it one of the fastest courses in the..

The North Bend Trail Fest, held in North Bend, Washington, is a dynamic mountain running event showcasing the Snoqualmie Valley's outdoor offerings. The festival features multiple races, including the challenging North Bend Skyline 30k with 6,600 feet of vertical gain, the intense Mt Si Vertical Kil..

Middle Fork Trail Run, held near North Bend, Washington, starts at the Middle Fork Trailhead and takes participants onto the Middle Fork, CCC, and Snoqualmie Lake trails. Runners choose from four distances: 50k, 22-mile, Half Marathon, and 10k. The courses follow river valleys with modest climbing a..

Orca Recovery Day 5K Trail Run is a community event held at Clark's Creek Park South in Puyallup, WA, now in its 3rd annual edition. It offers a 5K trail course described as mild to moderately challenging, blending fitness with conservation education as participants learn about Orca recovery and sal..

The 4th Annual Fall Classic takes place on Saturday October 11, 2025, at PLU Meadows Disc Golf Course, 754 124th St S, Tacoma, WA 98444. The race offers 1K Kids run and a 5K for participants, with youth and high school cross country races following. The course is described as mostly flat with a few..

The North Bend Skyline 30K is a challenging trail running event held in the scenic Snoqualmie Valley near North Bend, Washington. As part of the Vert Running Series Championship, it features a demanding course that tests runners' limits while offering stunning views of the valley and Cascade Mountai..

UTMB Index