Coldwater Rumble
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Coldwater Rumble Trail Runs - Coldwater Hundred
Coldwater Rumble takes place on January 16, 2027 at Estrella Mountain Regional Park in Goodyear, AZ. The event includes multiple trail distances within the Coldwater Hundred program and uses desert routes in the foothills of the Sierra Estrella mountain range. Many park trails have been reworked and additional miles are in use for the course.
The 100 mile layout is composed of two shorter red loops followed by three longer blue loops, with runners passing the start/finish area four times. All courses traverse a mix of crushed granite single track, rocks, boulders, sandy washes, old jeep roads, and dry wash beds. A 1.5 to 2 mile section called the Corgett Wash can be very sandy; gaiters are recommended. Hiking poles are allowed but may have limited usefulness.
Race services include well stocked aid stations, chip timing with remote split points, drop bag options at the race headquarters and at Horse Thief Aid for some distances, and crew access near the start/finish. Pacers are permitted for the ultradistance events under specified conditions. The event follows cupless procedures at aid stations and provides reusable cups at registration.
Additional event details include course marking with ribbon and flags, medical staff on site, awards for top finishers and finisher items up to 50K, camping and RV sites at the competitive track for the weekend, and a park entry fee for vehicles. Time limits and mid-race cutoffs apply. Visit the organization's website for the most recent information.
