Chuckanut Mountain 50K Trail Run

Embark on an unforgettable journey through the Chuckanut Mountains at the Chuckanut Mountain 50K Trail Run in Bellingham, WA, on March 21, 2026. This renowned ultra marathon, established in 1993, is celebrated for its distinctive "lollipop" course and draws participants from across the nation, often selling out on opening day. Runners can expect a dynamic route that begins and ends with approximately 10 kilometers of flat, fast running on the wide dirt path of the Interurban Trail, offering picturesque views adjacent to Chuckanut Bay.

The true challenge and allure lie in the middle 30 kilometers, where the course ascends into the lush, forested terrain of Larrabee State Park. This section packs roughly 5,000 to 5,400 feet of vertical gain through a mix of well-groomed trails, dirt roads, and more technical singletrack winding along the Chuckanut Mountain Ridge. Prepare for varied footing, including roots, rocks, and potentially mud, especially on the Lost Lake Trail, culminating in the infamous, hands-on-knees ascent known as "Chinscraper" or "Little Chinscraper." Despite the demanding climbs, runners are rewarded with stunning Pacific Northwest scenery, featuring tranquil lakes and expansive ridgeline views, often including the majestic Mt. Baker on clear days.

With five well-supported aid stations (a cup-free initiative requires personal cups) and encouraging, humorous signs placed by co-founder Doug McKeever, the Chuckanut 50K provides an exceptional experience for both seasoned ultra-runners and those tackling their first 50K. Typical race day conditions in late March often see highs around 55°F and lows near 39°F, with an 18% chance of precipitation, so runners should be prepared for potentially chilly and damp weather, especially on the exposed ridge. The race finishes back at Fairhaven Park, offering a vibrant atmosphere and local amenities in Bellingham to celebrate your achievement.