Running races in Arizona in May 2027

13 races in date order

Cocodona 250
Sun 2 May 2027 · Black Canyon City, AZ · Cocodona 250 · Sedona Canyons 125 · Bradshaw Brute 100 · Mingus Traverse 80 · Flagstaff Crest 40
A legendary 250-mile point-to-point ultra across Arizonas wild terrain

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Super Mom 5K/10K/Half Marathon - Phoenix
May 2027 · Phoenix, AZ · Half Marathon · 10K · 5K

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Tucson May the Fourth Be With You Run
May 2027 · Tucson, AZ · 5K

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Dr. Gann's Diet of Hope Cinco de Mayo 10K, 5K & FitKidz Mile
Sun 2 May 2027 · Tucson, AZ · 10K · 5K
Through Starr Pass foothills, Tucson Mountain views

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Taco 'Bout Fun Run
May 2027 · Flagstaff, AZ · 10K · 5K · 1 Mile Stroll
10K/5K fun run through Flagstaff's Buffalo Park

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Bursting Bubble 5K Walk & Run
May 2027 · Gilbert, AZ · 5K

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2026 Arizona Sunrise Series - Kiwanis Park
May 2027 · Tempe, AZ · 5K
Early sunrise 5K to beat the Arizona heat

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Tucson 5000
Sun 16 May 2027 · Tucson, AZ · 5K · FitKidz Mile
Tucsons fastest pancake-flat 5K and a two-decade record-setting staple

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Memorial Day Flag Run
May 2027 · Black Canyon City, AZ · 10K Run · 10K Ruck · 5K Run · 5K Ruck
Runners carry American flags to honor fallen veterans

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Adrenaline Night Runs
Sat 22 May 2027 · Scottsdale, AZ · 50K · 25K · 15K · 10K · 6K
Night trail race through McDowell Mountain Regional Park

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Hotfoot Hamster
Sat 29 May 2027 · Buckeye, AZ · 24 Hour · 12 Hour · 6 Hour
Chase the clock for 6, 12, or 24 hours on a historic manor track

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2026 Maricopa Memorial Day 5K
Sat 29 May 2027 · Maricopa, AZ · 5K
Chip-timed 5K at Maricopa's Copper Sky Recreation Center

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Flagstaff Doggie Dash 5k & BuffaLoops Ultra (12HR,6HR,3HR)
May 2027 · Flagstaff, AZ · 5K
Loop Buffalo Park with your dog, or for 12 hours

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← Arizona Oct Nov Dec Jan 2027 Feb 2027 Mar 2027 Apr 2027 Jun 2027 Jul 2027 Aug 2027 Sep 2027 Oct 2027

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Every race here is published by its organiser; RunCalendar checks the date and the entry window against the organiser's own page and rebuilds this calendar every night. A confirmed date shows its day; a provisional one shows only its month. Last updated 22 October 2026.