Arizona · Goodyear

Coldwater Rumble

Coldwater Rumble covers 101.3 miles on five loops through Estrella Mountain Regional Park in Goodyear, Arizona — two 10-mile red loops followed by three 27-mile blue loops — with 8,687 feet of gain over crushed granite singletrack, rocky desert washes, sandy stretches, and old jeep roads. A notably soft 1.5- to 2-mile sandy section called Corgett Wash compounds fatigue on every long loop. The 32-hour cutoff means most of the race runs in darkness, and temperature swings of 30 to 40 degrees between day and night are typical. Part of Aravaipa Running's Desert Runner Trail Series.