7 races in date order
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Four Corners Quad Keyah
Run a marathon in four states over four days at Four Corners
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Colossal Vail 50/50
Ultra through the Rincon foothills near Colossal Cave
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McDowell Mountain Frenzy
Desert trail loops near McDowell Mountain
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Mayhem Night Trail
Night trail run in the Sonoran Desert
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Tucson Marathon
Point-to-point, net-downhill from Oracle to Tucson
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Across The Years
One of the oldest multi-day track ultras in the US
Your next race, seen from above.
Save any of these to your season in RunCalendar and hear the morning entries open. Free on iPhone, no account needed.
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Save any of these to your season in RunCalendar and hear the morning entries open. Free on iPhone, no account needed.
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.