Ultramarathon Guide

Javelina Jundred

Javelina Jundred is a desert 100-miler at McDowell Mountain, blending rolling Sonoran singletrack, loops, heat management, and a party finish.

Next raceSaturday, October 31, 2026
Distance categoryUltramarathon
LocationFountain Hills, Arizona

Marathon Scout prioritizes official race websites, registration pages, timing providers, results pages, and race-linked live tracking. Last updated July 16, 2026.

Javelina Jundred quick facts

  • Large desert 100-miler at McDowell Mountain Regional Park.
  • Loop format with rolling Sonoran singletrack and strong crew access.
  • Western States qualifier and Golden Ticket event in recent race materials.
  • Halloween-weekend festival atmosphere shapes the race experience.

About the Javelina Jundred

Javelina Jundred is Aravaipa Running's Halloween-weekend desert ultra at McDowell Mountain Regional Park. The 100-mile race combines competitive Western States stakes with a large, festival-style loop format.

Javelina Jundred course description

The 100-mile race uses rolling Sonoran Desert singletrack with repeated loops around the Pemberton Trail system. The format makes crew access and pacing predictable, but heat, sun, dust, and night miles still decide many races.

Weather for the Javelina Jundred

Late October in the Phoenix area can still be hot in exposed afternoon sections, then cooler after sunset. Runners should plan for desert sun, dry air, and a long overnight push.

Past Javelina Jundred dates and results

YearDateStatusResults
2026Saturday, October 31, 2026
2025Saturday, October 25, 2025CompletedOpen results

Javelina Jundred FAQ

When is the Javelina Jundred?

The 2026 Javelina Jundred is on Saturday, October 31, 2026.

How do I register for the Javelina Jundred?

You can register for the Javelina Jundred at ultrasignup.com.

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