Arizona ultramarathon calendar
Compare a selective calendar of Arizona multiday and long-ultramarathon races—from short supported loops and invitation-only track racing to high-country trails, self-supported stages, and desert-to-mountain crossings. Use the table to shortlist race systems, then verify the current rules with each organizer.
Start with the operating model, terrain, cutoff, and edition status. Then open a race record for aid, crew, elevation, weather, logistics, caveats, and organizer sources.
| Race | Listed date | Status | Format | Course | Terrain | Cutoff |
|---|---|---|---|---|---|---|
| Fat Ox Endurance RunsOnline registration closes November 16 at 11:59 PM Mountain Time. The 48-hour race starts November 20 at 8:00 AM; the USATF 24-Hour Championship starts November 21 at 8:00 AM. The organizer also lists race-day registration from 7:00 AM. | Nov 20–22, 2026 | Upcoming | 48-Hour, 24-Hour, Fixed-Distance | Loop | Road | 48 hours for the headline race. All races end at 8:00 AM on Sunday, November 22, so the 100 miles, which starts at 9:00 AM Friday, has up to 47 hours. The multiday runs have no DNFs and allow no drop-downs: runners simply go as far as they can in the time. |
| Desert Solstice Track InvitationalAt the October 23, 2026 check, the organizer confirmed December 19–20 at Camelback High School. Its field limits conflict: 25 runners in the overview and 30 in the entry standards. Confirm capacity when applying. | Dec 19–20, 2026 | Upcoming | 24-Hour, Fixed-Distance | Loop | Track | 24-hour race ends at 8:00 AM Sunday; 100-mile runners share the same track event. |
| Across the YearsRegistration is open on UltraSignup at late-tier prices, for example $795 for the 6-day, $470 for 72 hours, $325 for 48 hours and $250 for 24 hours, before tax and fees. Online registration closes Sunday, December 20 at 11:59 PM PT; Aravaipa also offers a mail-in entry form, a payment plan and race-day registration at the venue. No field caps are published. On October 20 the 2026–27 live results button on the organizer page had no link yet. UltraSignup’s race-day text names “Saturday, December 27” (2:00–6:00 PM) and 7:00 AM to noon each morning, while the organizer page lists check-in on Sunday, December 27 and race-day registration from 7:00 to 10:00 AM; December 27, 2026 is a Sunday. | Dec 28, 2026 – Jan 3, 2027 | Upcoming | 48-Hour, 24-Hour, 6-Day, Fixed-Distance | Loop | Mixed | Each fixed-time race ends exactly 6 days, 72, 48, 24, 12 or 6 hours after its 9:00 AM start, and the last ones finish at 9:00 AM on Sunday, January 3. The 200-mile cutoff is 9:00 AM on January 3 for every start day, which leaves 96 hours for December 30 starters. 100-mile runners have 72 hours if they start December 28–31 and 48 hours if they start January 1. The 100 km and the marathon have 24-hour cutoffs. |
| Coldwater Hundred — 100 MileThe 2027 event page was current at review but still linked the 2026 runner guide. | Jan 16–17, 2027 | Upcoming | Fixed-Distance | Loop | Desert | 32 hours, finishing by 3:00 PM Sunday |
| Arizona Monster 300The 2027 race runs March 29–April 4 in reverse, from Patagonia to Superior: 300.5 miles with about 32,386 ft of climbing and a 150-hour limit, per the 2027 runner manual. | Mar 29 – Apr 4, 2027 | Upcoming | 200+ Mile | Point-to-point | Desert | 150 hours |
| Bradshaw Brute 100The 2027 date, cutoff and elevation figures are now labeled for 2027. The surface-percentage table still carries a 2026 label. | May 2–3, 2027 | Upcoming | Fixed-Distance | Point-to-point | Mountain | 38 hours, finishing by 8:00 PM Monday |
| Cocodona 250The organizer’s page checked October 23, 2026 now labels its course figures for 2027: 253.5 miles, 38,943 ft gain and 34,039 ft loss. Distance and routing remain subject to permitting. | May 2–7, 2027 | Upcoming | 200+ Mile | Point-to-point | Mountain | 125 hours |
| Saguaro Showdown Backyard UltraThe fourth edition. Registration is open on UltraSignup and closes at 11:59 PM MT on Friday, January 8, 2027. Big's race page lists the category as "Bronze" and gives Phoenix as the location; the race is held at Usery Mountain Regional Park in Mesa. The ruck loop is 2.3 miles on UltraSignup, while Big's page gives 2.25 and 2.5 miles. | Jan 23, 2027 | Upcoming | Backyard Ultra | Mixed | Mixed | Each loop must be completed within one hour, and runners must be in the start corral before the bell, with whistles at 3, 2 and 1 minutes and a 10-second countdown. No late starts. The race is open-ended: the last runner must complete one loop alone to win, and everyone else is a DNF. In the Backyard 24, everyone who reaches 24 hours is tied for first. |
| Javelina Jundred — 100 MileThe 2026 race started October 31 after significant rain on Friday, with more heavy rain forecast overnight into Sunday; Aravaipa warned that flowing washes could delay aid-station pickups and leave gaps in live tracking. Winners below come from Aravaipa Live timing, checked while slower runners were still on course; UltraSignup had not posted official results yet. | Oct 31 – Nov 1, 2026 | Past edition | Fixed-Distance | Loop | Desert | 30 hours per wave. On Sunday, November 1, Wave 1 must start loop 5 by 6:00 AM and finish by noon; Wave 2 must start loop 5 by 6:30 AM and finish by 12:30 PM. Cutoffs use the assigned wave’s gun time. |
| Grand to Grand UltraThis record covers September 20–26, 2026. At the October 23 check, the 2026 itinerary remained available but its former entry page returned 404. The homepage now advertises September 19–25, 2027 with both self-supported and supported categories. | Sep 20–26, 2026 | Past edition | Stage Race | Point-to-point | Desert | Stage-specific time limits and checkpoint rules apply; use the current participant instructions rather than one overall finish cutoff. |
| Flagstaff to Grand Canyon Stagecoach Line 100 | Sep 19–20, 2026 | Past edition | Fixed-Distance | Point-to-point | Trail | 31 hours for solo runners, with mandatory intermediate cutoffs in the current manual |
| Mogollon Monster 100The 2026 edition has been run. The linked runner guide now carries a September 3, 2026 update. The main event page has moved on to the 2027 race date. | Sep 12–13, 2026 | Past edition | Fixed-Distance | Point-to-point | Mountain | 38 hours |
A supported short loop can simplify navigation, resupply, and crew access. A point-to-point crossing adds transport and withdrawal logistics, while a self-supported stage race shifts much of the problem toward pack weight, recovery, and mandatory equipment.
Desert Solstice is different again: it is a small, qualification-based track event. Compare entry rules and support systems before comparing headline distance alone.
The listed venues span metropolitan desert loops, the Mogollon Rim and Flagstaff high country, remote plateau terrain, and routes that climb from Sonoran desert toward mountain towns.
Those settings can create very different altitude, exposure, footing, and overnight-layering problems. Treat the event notes as planning context, then use the current route guide and local forecast for final decisions.
The current listed editions cluster from September through May rather than peak summer. That does not eliminate heat or weather risk: daytime exposure, cold desert nights, high-country storms, and wind can still affect the same race weekend.
Source-checked editions that have not yet ended, grouped by how the course and support system operate.
Goodyear, Arizona, USA · Road
A fixed-time festival on a certified 0.988178-mile concrete loop, headlined by the 48-hour race and 2026 USATF 24-Hour Championships.
Edition note: Online registration closes November 16 at 11:59 PM Mountain Time. The 48-hour race starts November 20 at 8:00 AM; the USATF 24-Hour Championship starts November 21 at 8:00 AM. The organizer also lists race-day registration from 7:00 AM.
Phoenix, Arizona, USA · Track
An elite invitation-only 24-hour and 100-mile track race at Camelback High School. Entry is selective and based on qualifying standards. Organized by Aravaipa Running.
Edition note: At the October 23, 2026 check, the organizer confirmed December 19–20 at Camelback High School. Its field limits conflict: 25 runners in the overview and 30 in the entry standards. Confirm capacity when applying.
Peoria, Arizona, USA · Mixed
A New Year fixed-time festival on a 1.42-mile dirt and paved loop at Peoria Sports Complex, with a 6-day race, rolling-start 72- to 6-hour races and 100- and 200-mile options.
Edition note: Registration is open on UltraSignup at late-tier prices, for example $795 for the 6-day, $470 for 72 hours, $325 for 48 hours and $250 for 24 hours, before tax and fees. Online registration closes Sunday, December 20 at 11:59 PM PT; Aravaipa also offers a mail-in entry form, a payment plan and race-day registration at the venue. No field caps are published. On October 20 the 2026–27 live results button on the organizer page had no link yet. UltraSignup’s race-day text names “Saturday, December 27” (2:00–6:00 PM) and 7:00 AM to noon each morning, while the organizer page lists check-in on Sunday, December 27 and race-day registration from 7:00 to 10:00 AM; December 27, 2026 is a Sunday.
Estrella Mountain Regional Park, Goodyear, Arizona, USA · Desert
A 101.3-mile desert loop race at Estrella Mountain Regional Park, combining two shorter red loops and three longer blue loops with a 32-hour cutoff.
Edition note: The 2027 event page was current at review but still linked the 2026 runner guide.
Patagonia to Superior, Arizona, USA · Desert
A 300.5-mile journey from Patagonia to Superior through Arizona’s Sonoran Desert and mountain terrain, with 19 aid stations and a 150-hour limit.
Edition note: The 2027 race runs March 29–April 4 in reverse, from Patagonia to Superior: 300.5 miles with about 32,386 ft of climbing and a 150-hour limit, per the 2027 runner manual.
Black Canyon City to Prescott, Arizona, USA · Mountain
A distinct 99.9-mile point-to-point race within Cocodona race week, climbing from Black Canyon City through Crown King to Prescott with a 38-hour cutoff.
Edition note: The 2027 date, cutoff and elevation figures are now labeled for 2027. The surface-percentage table still carries a 2026 label.
Black Canyon City to Flagstaff, Arizona, USA · Mountain
A 253.5-mile point-to-point journey through central and northern Arizona, linking desert, historic towns, red rock country, and Flagstaff within a 125-hour limit.
Edition note: The organizer’s page checked October 23, 2026 now labels its course figures for 2027: 253.5 miles, 38,943 ft gain and 34,039 ft loss. Distance and routing remain subject to permitting.
Clearly dated editions retained for course and organizer research after their listed race date has passed.
McDowell Mountain Regional Park, Arizona, USA · Desert
A social desert-trail 100 using five rolling loops in McDowell Mountain Regional Park, with an estimated 6,296 ft of gain and a 30-hour cutoff.
Result: Rob Molke won the 100-miler in 12:11:30, 87 seconds ahead of Noah Dusseau; Heather Jackson won the women’s race in 13:48:29, 55 seconds ahead of Carla Molinaro.
Edition note: The 2026 race started October 31 after significant rain on Friday, with more heavy rain forecast overnight into Sunday; Aravaipa warned that flowing washes could delay aid-station pickups and leave gaps in live tracking. Winners below come from Aravaipa Live timing, checked while slower runners were still on course; UltraSignup had not posted official results yet.
Grand Canyon to Grand Staircase, Utah/Arizona, USA · Desert
A self-supported 6-stage, 7-day desert foot race from the Grand Canyon region toward the Grand Staircase, based out of Kanab, Utah.
Result: Emily Keddie won the 2026 Grand to Grand Ultra outright in 37:51:23. Andy Pearson was the first man in 39:09:59, second overall. 27 runners finished the six stages.
Edition note: This record covers September 20–26, 2026. At the October 23 check, the 2026 itinerary remained available but its former entry page returned 404. The homepage now advertises September 19–25, 2027 with both self-supported and supported categories.
Flagstaff to Tusayan near Grand Canyon, Arizona, USA · Trail
A 100-mile point-to-point Arizona Trail race from the Flagstaff area toward the Grand Canyon, with roughly 7,000 ft of gain and a 31-hour solo limit.
Result: Landon Tutt won the men's 100-mile run in 21:50:14 and Jessica Henning won the women's race in 24:26:12.
Mogollon Rim near Pine, Arizona, USA · Mountain
A rugged 102.3-mile crossing of the Mogollon Rim with six major rim climbs, 15,900 ft of gain, elevations near 8,000 ft, and a 38-hour cutoff.
Result: Andy Chrysler won the men's race in 21:26:35 and Moriah Carty won the women's race in 27:45:00.
Edition note: The 2026 edition has been run. The linked runner guide now carries a September 3, 2026 update. The main event page has moved on to the 2027 race date.
No. The listed events include desert and mixed-surface loops, mountain and high-country trails, a track race, self-supported stages, and long point-to-point crossings.
The current registry includes fixed-time, 100-mile, 200-plus-mile, stage-race, and fixed-distance options. Some festivals offer several formats under one event record.
Each event record shows the organizer sources used for its review, while the directory scope note displays the review-date range. Dates, permits, routes, registration, and rules can still change, so confirm them with the organizer before making plans.
Narrow the comparison to races with a distinct, verified 100-mile option.
Open resource →Compare Arizona's 100-mile options with source-checked races across the United States.
Open resource →Browse the wider worldwide collection by format, region, terrain, or date.
Open resource →Current calendar: Arizona Ultramarathons