
From the Organizer
The Mini Mountain Challenge goes down this July 26, 2026 at Sunday River. Five hundred of the toughest and gnarliest kiddos from ages 4-12 take to the mountain obstacle course. The Mini Mountain Challenge is a scaled-down version of the Tough Mountain Challenge designed for kids ages 4 to 12 that's all about having fun and getting dirty. Kids can expect a short course that includes uphill and downhill running, dirt, mud, fun obstacles, snow guns, ball pits, foam finishes and even a few of the adult obstacles. Mini Mountain is organized into heats broken down by age group. Course length and obstacles will vary by these age group, and everything is located in the same venue as the full Tough Mountain event.
Distances & Pricing
Race Location
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
Trail Festival at Pineland Farms
Luv 2 Run Portland 5K
Maine Summer Adventure Race: 3-Hour
Fairgrounds 5k, Mile & Market
Frequently Asked Questions (FAQs)
Mini Mountain Challenge
Jul 26, 2026