Coldwater Hundred
- Date
- Jan 16–17, 2027
- First start
- 7:00 am
- Distances
- 6 distances
- Time limit
- 32 Hours (3:00pm on Sunday Overall Cutoff)
- Elevation gain
- 8,687 feet
Follow desert trails that wind through the foothills of the rugged and jagged Sierra Estrella mountain range. Many trails at Estrella Mountain Regional Park have recently been re-worked and there are several new miles of trail in use for this course. The 100 mile race will feature two 10 mile (red) loops followed by three 27 mile (blue) loops. Runners will come through the start/finish a total of four times (after red 1, after red 2, after blue 1, after blue 2).
Good to know
/ Start Area The 2026 start/finish line is located at the Estrella Mountain Competitive Track. There are plenty of parking spaces within the start/finish area and the surrounding satellite lots.
As of January 1, 2026 the Maricopa County Parks entry fee is $10. Learn more about an annual pass to all parks HERE.
From central Phoenix, take I-10 west to Estrella Parkway exit. Travel south to Vineyard Ave. Turn east on Vineyard Ave. to the Estrella Mountain Regional Park entrance on the south side.
Address 14805 West Vineyard Avenue Goodyear, AZ 85338
We have secured a partner hotel for race weekend that is a short 10 minute drive to the Estrella Mountain Regional Park. The Comfort Suites of Goodyear offers guests newly renovated modern guest suites with amenities like premium bedding, sofa beds, microwaves and refrigerators. They also offer free WiFi, a free hot breakfast and a heated outdoor pool and hot tub. This hotel is pet friendly (additional fees apply).
For more information and booking at our negotiated rate, please follow this link.
Pick your distance
The numbers for each course, straight from the race page. Compare them side by side below.
- Date
- Saturday, Jan 16, 2027
- Start Time
- 7:00 am
- Time Limit
- 32 Hours (3:00pm on Sunday Overall Cutoff)
- Distance
- 101.3 Miles
- Total Elevation Gain
- 8,687 feet
- Max Elevation
- 1,449 feet
Compare the distances
| 100 Mile | 100K | 50K | 20 Mile | 10 Mile | 5 Mile | |
|---|---|---|---|---|---|---|
| Date | Saturday, Jan 16, 2027 | – | – | – | – | – |
| Start Time | 7:00 am | 7:15 am | 7:30 am | 8:00 am | 8:30 am | 8:45 am |
| Time Limit | 32 Hours (3:00pm on Sunday Overall Cutoff) | 31+ Hours (3:00 pm on Sunday Overall Cutoff) | – | 30+ Hours (3:00 pm on Sunday Overall Cutoff) | 7+ Hours (4:00 pm Overall Cutoff) | – |
| Distance | 101.3 Miles | 64.2 Miles | 32.2 Miles | 20.0 Miles | 9.5 Miles | 5 Miles |
| Total Elevation Gain | 8,687 feet | 5,490 feet | 2,979 feet | 1,865 feet | 916 feet | 554 feet |
| Max Elevation | 1,449 feet | – | – | – | 1,415 feet | 1,305 feet |
| Stampede of Two | – | – | – | – | – | 2024 Coldwater Rumble 100 Mile |
Course & location
Estrella Mountain Regional Park, Goodyear, AZ
Entry fees
Prices go up as race day gets closer; register early.
| Until 8/14 | Until 12/14 | Until 1/11 | Race Week | |
|---|---|---|---|---|
| 100 Mile | $300 | $320 | $340 | $360 |
| 100K | $170 | $185 | $200 | $210 |
| 50K | $130 | $145 | $160 | $170 |
| 20 Mile | $90 | $105 | $120 | $130 |
| 10 Mile | $70 | $80 | $90 | $100 |
| 5 Mile | $45 | $50 | $55 | $60 |
Prices don't include tax or registration-platform fees.
Course records
- Photos 100M · Women's16:19:17Devon Yanko (2024)
- Photos 100M · Men's15:09:52Catlow Shipek (2014)
- 100K · Women's9:20:33Lucie Rathbun (2025)
- 100K · Men's8:57:14Tim Vail (2026)
- 60K · Women's4:49:17Shea Aquilano (2024)
- 60K · Men's4:34:35Christopher St. Jean (2024)
- 40K · Women's2:59:32Nicole Hanson (2025)
- 40K · Men's2:41:08Michael Tomchaney (2025)
- 10 Mile · Women's1:16:13Shelby Farrell (2024)
- 10 Mile · Men's1:02:35Kyle Gallagher (2024)
- 5 Mile · Women's41:32Malinda Allen (2024)
- 5 Mile · Men's37:05Braxton Pingleton (2026)
