There are 10 marathons in Arizona scheduled for 2026. The next is the Grand Canyon Trail Marathon, Half-Marathon, & 5k Run/Walk in Grand Canyon Village on October 24. Arizona marathons run primarily October through March.

Garmin Marathon Tucson

Sun, Nov 8 · Tucson, AZ Tucson
2026 Garmin Marathon Tucson--5K2026 Garmin Marathon Tucson--10K2026 Garmin Marathon Tucson--Half Marathon +1

Four Corners Quad Keyah

Thu, Dec 3 · Teec Nos Pos, AZ Teec Nos Pos
Charity Bib Half Marathon Series (4 Events)Single Half Marathon at the Four CornersFour Corners Quad Keyah Half Marathon Series +3