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100K Races in Arizona

As of October 6, 2026, Crewable lists 6 upcoming 100K races in Arizona from October 2026 to April 2027. The next is Javelina Jundred on October 31 in McDowell. Registration is open for 2.

Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites

Race calendar

October 2026

1 race

November 2026

1 race

December 2026

1 race

  1. Across the Years

    Peoria, AZ23 ft gain
    Backyard Ultra6 days+6
    Open until Dec 20from $105

January 2027

1 race

February 2027

1 race

April 2027

1 race

Quick answers

What is the next 100K race in Arizona?

Javelina Jundred, on Saturday, October 31, 2026, in McDowell. Distances: 100 mi, 100K, 31K.

How many 100K races in Arizona have open registration?

2 of the 6 list registration as open as of October 6, 2026, including Across the Years and Black Canyon Ultras.

What is the busiest month for 100K races in Arizona?

October 2026, with 1 of the 6. November 2026 follows with 1.

Cities in Arizona

Flagstaff17Phoenix44Tucson21Sedona15

Neighboring states

California15Nevada39New Mexico31Utah79

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