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Days Away
Coldwater Rumble is a multi-distance ultramarathon event held at Estrella Mountain Regional Park in Goodyear, AZ, organized by Aravaipa Running. The race has been held annually in January since at least 2012, offering distances ranging from 4 miles to 100 miles.
Race Day
Jan 16, 2027
Registration opens, price changes, race updates: straight to your inbox.
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Make Race PlanAre you the race director for Coldwater Hundred?
Claim this race to manage registration, volunteers, and race-day ops on Endurance HQ.
