Date / Time: Saturday, January 19, 2019 at 7:00 AM
Race Distance: 100 Miles
Location (Start / Finish): Estrella Mountain Regional Park, Goodyear, AZ
Race Day Temperature at Start (High / Low Avg.): 66 / 42 F
Sunrise / Sunset: 7:31 AM / 5:50 PM
Race Cutoff (Hrs.): 32
Course Layout(Map): 5 x 20 Mile Loop
Terrain: A mix of crushed granite single track, rocks, boulders, sandy washes, old jeep roads, and dry wash beds
Elevation Change (Ascent / Decent): 10,630 ft. (5,315 ft. / 5,315 ft.)
Altitude Above Sea Level (Min. / Max.): 900 ft. / 1,300 ft.
Number of Aid Stations (Max. distance in miles between A.S.): 4 (7.9 mi.)
Cost: $228.48 until 9/14, $255.68 until 12/27, $282.88 until 1/15, then $310.08
Completion rate: 54% (28/52) 2018, 51% (27/53) 2017, 68% (32/47) 2016, 47% (34/72) 2015
Course Record (M/F): 15:09:52 Catlow Shipek (2014) / 20:05:43 Gina Dhaliwal (2014)
Prerequisites / Lottery / Trail Work Req.: No / No / No
Qualifying Race for: UTMB
Race Series: N/A
Website: https://www.aravaiparunning.com/coldwater-rumble/
Race Director: Aravaipa Running
Year Established: 2012
Other Race Distances: 4 mi. / 20k / 20 mi. / 52k / 52 mi.
Fun Fact: Estrella Mountain Regional Park, 19,840 acres of desert and mountains, became the first regional park in the Maricopa County Park System in 1954. The Sierra Estrella range, or Star Mountains, was once within the Mexican border, and remained so until the Gadsden Purchase in 1853.
Nearest Airports (HRs): Phoenix, AZ (.5), Tucson, AZ (2.25)
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