Are you gearing up for the Javelina Jundred but feeling overwhelmed by the entry process, course details, and race history? Many runners struggle to find comprehensive information about this iconic ultramarathon.

The Javelina Jundred, held in Fountain Hills, Arizona, is a challenging 100-mile and 100-kilometer trail race through the Sonoran Desert. This guide is your one-stop resource to navigate every aspect of the race, from signing up to crossing the finish line. Whether you’re a first-timer or a seasoned ultrarunner, we’ve got you covered.
Our goal is to equip you with essential knowledge for race day success. Get ready to conquer the desert trails!
Key Takeaways
The Javelina Jundred offers an unparalleled ultramarathon experience. Here are the essentials to know before diving into the details:
- The event, held in Fountain Hills, Arizona, features 100-mile and 100-kilometer races on a unique 5-loop course.
- Registration opens annually on January 1st, with no lottery system. The waitlist moves quickly, often accommodating 100+ runners by race day.
- Iconic course records include Jonathan Rea’s 12:43:10 (2023) and Camille Herron’s 14:03:23 (2021) for the 100-mile race.
- Aid stations are strategically placed throughout the course, providing hydration, nutrition, and critical support.
- The event doubles as a Western States 100 qualifier, offering elite runners the chance to earn Golden Tickets.
Javelina Jundred Course Information

The Javelina Jundred course is a true test of endurance, strategy, and mental fortitude. Unlike point-to-point or single-loop courses, the Javelina Jundred utilizes a 5-loop format, which brings its own set of challenges and advantages. Each loop is a journey through the rugged yet beautiful Sonoran Desert, offering expansive views, diverse terrain, and a vibrant race atmosphere that few ultramarathons can match.
This unique setup gives runners the opportunity to revisit aid stations multiple times, plan their pacing strategies effectively, and mentally divide the race into manageable sections. At the same time, the desert environment presents its own hurdles, from fluctuating temperatures to stretches of exposed trail where hydration and preparation are critical.
Whether you’re running the full 100 miles, 100 kilometers, or the shorter 31K race, understanding the course’s nuances is key to success. From rocky climbs to sand dunes and desert flora, every mile will test your strength and resolve. Below, we’ll break down the trail distances, features, and aid station support to help you prepare for race day.
Trail Distances
- First Loop: 22.3 miles
- Loops 2-5: 19.45 miles each
- Total Mileage: 100.1 miles
Course Overview

The race begins and ends at Javelina Jeadquarters in McDowell Mountain Regional Park. Runners will navigate trails like Shallmo, Pemberton, and Cinch, with the first loop including a segment of the Escondido Trail. The course offers a mix of rolling single tracks, granite boulders, dry wash beds, and iconic desert scenery.
- 100 Mile Runners: Complete five loops.
- 100 Kilometer Runners: Complete three loops.
- 31 Kilometer Runners: Complete one loop.
Each loop features a gentle climb to the foothills of the McDowell Mountain range, with approximately 1,580 feet of elevation gain per loop. The trail includes:
- Hard-packed granite
- Rocky sections
- Sand dunes
100 Mile Elevation Profile

100 Km Elevation Profile

31 Km Elevation Profile

Aid Stations and Support
Aid stations are critical to your success at the Javelina Jundred, offering hydration, nutrition, and a place to regroup during the race. There are four aid stations per loop strategically located along the Pemberton Trail to help you tackle the desert’s unique challenges.
The longest distances between aid stations are 6.5 miles (Coyote Camp to Jackass Junction) and 6.6 miles (Rattlesnake Ranch to Javelina Jeadquarters) on the first loop. Be prepared by carrying a minimum of two bottles of water. If you anticipate running at a 24-30 hour pace, a hydration pack or increased water capacity is highly recommended, especially during the heat of the day (8:00 AM to 5:00 PM).
Aid Station Locations and Details
The following table outlines the key aid stations, their locations, and mileage points:
| Aid Station | Miles Reached | Details |
|---|---|---|
| Javelina Jeadquarters | 0, 22.5, 41.7, 61.1, 80.5, 99.9 | Start/Finish line at Four Peaks Staging Area |
| Coyote Camp | 4, 26.3, 45.7, 65.1, 84.5 | Junction with a park service road |
| Jackass Junction | 10.5, 32.8, 52.5, 71.6, 91 | Located near Granite Tank |
| Rattlesnake Ranch | 15.7, 38, 57.4, 76.8, 96.2 | Positioned on the Pemberton Trail |
Javelina Jundred Aid Station Chart

Each aid station is fully stocked with:
- Hydration: Water, ice, and electrolyte drinks.
- Nutrition: Energy gels, salty snacks, soups, and even quesadillas.
- Nighttime Support: Extra lighting and warm beverages for overnight runners.
- Medical Support: On-site personnel to help with injuries or emergencies.
The dedicated volunteers at each station will ensure you stay motivated and informed, providing progress updates and support when you need it most.
The dedicated volunteers at each station will ensure you stay motivated and informed, providing progress updates and support when you need it most.
Entry Details
Preparing to enter the Javelina Jundred requires careful attention to timing and fees. Here’s what you need to know to secure your spot in this coveted event.
Registration Process
Entering the Javelina Jundred is straightforward but competitive. Registration opens on January 1st each year, operating on a first-come, first-served basis. If you don’t secure a spot immediately, don’t worry—the waitlist often takes in over 100+ runners (I’ve heard of people at 200+ on the wait list getting in) before race day. Here’s a quick breakdown of the process:
- Waitlist notifications typically begin around August.
- No deferments or transfers are allowed, so plan carefully before committing.
- Elite runners seeking Golden Ticket opportunities must contact the race director directly at [email protected].
Entry Fees
The following entry fees apply for the 2025 race: 100 Mile:
- $450 starting January 1
- $480 after March 2
- $510 after August 3
100 Kilometers:
- $310 starting January 1
- $340 after March 2
- $370 after August 3
31 Kilometers:
- $140 starting January 1
- $160 after March 2
- $180 after August 3
Course Records and Notable Performances

The Javelina Jundred attracts top talent, leading to impressive records and memorable achievements over the years.
Javelina Jundred Course Records
100 Mile:
- Men: 12:43:10 – Jonathan Rea (2023)
- Women: 14:03:23 – Camille Herron (2021)
100K:
- Men: 7:15:53 – Rajpaul Pannu (2023)
- Women: 8:13:07 – Anna Kacius (2023)
Memorable Achievements
- Camille Herron’s remarkable 100-mile record highlights her dominance in ultrarunning.
- The race’s Western States 100 qualifications create intense competition among top finishers.
- Jonathan Rea’s 2023 performance set a new benchmark for the men’s 100-mile race.
Conclusion
The Javelina Jundred is more than just a race; it’s a celebration of endurance, community, and the rugged beauty of the Sonoran Desert. From its unique loop format to its status as a Western States qualifier, this ultramarathon offers something for everyone—whether you’re chasing a personal best, aiming for a Golden Ticket, or simply looking to test your limits.
With comprehensive preparation, an understanding of the course, and the support of aid stations and volunteers, you’ll be ready to conquer the desert trails. The Javelina Jundred is a true test of grit and determination, and finishing it is an accomplishment to be proud of. Good luck on your journey, and may you join the ranks of those who’ve conquered this iconic race!








