Trail Running Training

Surviving Javelina Jundred: Tips from a Local Who Has Done the Race

In 2016, I ran the Javelina Jundred 100k. I’ve sent my race tips to friends getting ready to do the race several times since then, and I figured I should just go ahead and make this a formal blog post that I can link to, and maybe others searching the internet for race information might find it as well.

The Basics

Javelina Jundred is a 100k and 100 mile race that takes place at McDowell Mountain Park every October, the closest Saturday before Halloween. It is traditionally a hot and sunny race, as this tends to be a time of year when we don’t get much rain. While the nights have started their seasonal cooldown, the daytime is still pretty warm and tends to peak around 90ยบ, give or take.

The race takes place mostly on the Pemberton Loop of the park, with detours on the west side along Shallmo Wash and Cinch Trail on the east that take runners down to “Jeadquarters” at the Four Peaks Staging Area. This forms a loop of approximately 19 miles that the 100k runners will do three times, and the 100 mile runners will do five (there is a variation in the first loop that adds a few miles to round out the total mileage for each distance). The loops are done “washing machine” style, which means that each loop you run is done the opposite direction of your previous loop.

When I trained for the race, I deliberately ran in the heat of the day to build up my heat acclimation and to figure out what my systems would need to be to survive the race. The things I did worked for me, and I took away some ideas for improvements I would make if I did the race again.

Here’s what I did, and what I learned.