10 ultra events in Whatcom County, Washington

From big races to Saturday morning group runs—find ultra events and connect with the local endurance sports community.

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Nooksack Ridgelines [ultrasignup.com]
Sun, Sep 14, 2025

Ultra
Whatcom County, Washington, United States
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Out Trails LGBTQ+ Running Retreat - North Cascades [ultrasignup.com]
Thu, Oct 02, 2025

Run Trail Ultra
Whatcom County, Washington, United States
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CWES - Baker's Dozen Mind/Body Challenge [ultrasignup.com]
Wed, Dec 31, 2025

5k 45k Ultra
Whatcom County, Washington, United States
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CWES - Buckskin Ridge [ultrasignup.com]
Wed, Dec 31, 2025

42 Miles Ultra
Whatcom County, Washington, United States
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CWES - Devils Dome [ultrasignup.com]
Wed, Dec 31, 2025

45 Miles Ultra
Whatcom County, Washington, United States
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CWES - Double Desolation Mind/Body Challenge [ultrasignup.com]
Wed, Dec 31, 2025

100 Miles Ultra
Whatcom County, Washington, United States
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CWES - Purple Rainbow [ultrasignup.com]
Wed, Dec 31, 2025

100k Ultra
Whatcom County, Washington, United States
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CWES - ShellRockin' Loop [ultrasignup.com]
Wed, Dec 31, 2025

42 Miles Ultra
Whatcom County, Washington, United States
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CWES - Sourdough Sufferfest Mind/Body Challenge [ultrasignup.com]
Wed, Dec 31, 2025

105 Miles Ultra
Whatcom County, Washington, United States
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Baker Lake 50k [nwenduranceevents.com] [Register at ultrasignup.com] - Facebook
Sat, Oct 03, 2026 at 8:00 AM

50k Ultra
Kulshan Campground, Whatcom County, Washington, United States
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