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Javelina Jundred
Race Details:
- Location: Fountain Hills, AZ, USA
- Race Date: 10/31/2026
- Race Distances: 100 Kilometer, 100 Mile, Ultra Marathon
What This Race Counts Toward:
Western States 100: Yes
UTMB Index: Yes
Javelina Jundred Description
The Javelina Jundred is a costumed Halloween-weekend ultramarathon held each October in McDowell Mountain Regional Park near Fountain Hills, Arizona. Known as the original 100-mile trail run party, runners complete repeated loops of desert singletrack past saguaro cactus and rocky washes, with 100 mile and 100K distance options. A Western States Golden Ticket race and UTMB Index event, it draws one of the largest fields in American ultrarunning, all racing in costume through the “Jalloween” night.
Always check the official race website for the most accurate and up-to-date race information and logistics.
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Javelina Jundred Additional Details:
Javelina is famous for its party atmosphere as much as its racing, with runners in full costume tackling loop after loop of rolling desert singletrack past saguaro cactus and rocky washes. Four aid stations circle the course, including Jackass Junction, where a full-blown party breaks out complete with music and themed decor to keep tired legs moving. Crews get to see their runner every loop without driving anywhere, watching the race unfold from Javelina Jeadquarters while enjoying food trucks, a beer garden, and a genuinely festive base camp. As a Western States Golden Ticket race, the top two men and women in the 100 mile earn automatic entry into the following year’s Western States 100, drawing an unusually competitive front pack to an event best known for its costumes and camaraderie. It’s equal parts serious racing and Halloween party.
Course Information
Profile: Rolling Hills
Type: Multiple Loops
Surface: Trails
Pace Groups: No
Time Limit: 30 hours (100 mile), 29 hours (100K)
# of Finishers
100K: 324 finishers in the 100K race
100 Mile: 787 finishers out of 827 entrants in the 100 Mile race
Elevation Details
Elevation Gain: 6,296 ft
Elevation Loss: 6,296 ft
Average Temperature
- Low: 60°F
- High: 84°F
Train Smarter for Race Day
A great race starts long before the starting line. Whether you’re chasing your first finish or hunting a new PR, a structured training plan takes the guesswork out of race prep — building your fitness, your confidence, and your mileage at the right pace for you.
Explore plans for every distance and experience level, from your first 5K to your next ultra.
Ultramarathon Training Plans
Explore structured plans across every ultra distance, from your first 50K to 100 miles and beyond.
Things to Do in Fountain Hills, AZ, USA
Make the most of race weekend — here’s how to fill the time before and after you cross the finish line.
Landmark
Fountain Park
See one of the world’s tallest fountains shoot up to 560 feet at Fountain Park, the centerpiece of downtown Fountain Hills — an easy, flat, low-impact stop after race weekend.
Scenic Drives & Viewpoints
Adero Canyon Trailhead
Take in a bird’s-eye view of town and the fountain from the Adero Canyon Trailhead, connecting to the McDowell Sonoran Preserve — a relaxed, scenic option for good-legs days.
Arts & Culture
Fountain Hills Artists’ Gallery
Browse original works from 30 local Arizona artists at the Fountain Hills Artists’ Gallery, just steps from Fountain Park — a relaxed, indoor rest-day visit.
Shopping
Avenue of the Fountains
Browse shops and restaurants along the Avenue of the Fountains, Fountain Hills’s walkable main street facing the park — an easy, flat stroll for a post-race souvenir.
Outdoors & Trails
McDowell Mountain Regional Park
Hike or mountain bike the looping trails of McDowell Mountain Regional Park, a 21,000-acre preserve adjoining Fountain Hills — an easy to moderate option depending on tired legs.
Hotels & Lodging Near the Javelina Jundred
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