Ws100.com is the official website of the Western States Endurance Run Foundation, serving as the single worldwide source of information about the Western States 100-Mile Endurance Run (WS100). The site covers race history, statistics, and the volunteer organization behind the event. It is operated by the Foundation, which is based in Healdsburg, California, and holds a registered trademark on the iconic cougar logo associated with the race.
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Authority
46/100
Safety
84/100
Registered
Apr 23, 1999
27 years old · GoDaddy.com, LLC
1 of 2 safety checks passed (Sep 8, 2026).
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Domain registered Apr 23, 1999 — 27 years old.
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Registrar today: GoDaddy.com, LLC — unchanged since AboutUs began tracking (Sep 8, 2026).