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July 26, 2026

Mini Mountain Challenge

Registration opening for 2026 this fall!

Mini Mountain Challenge competitor receiving her medal

About

Mini Mountain offers a kid-friendly version of Tough Mountain for ages 4-12. It features uphill and downhill running, dirt, mud, fun obstacles, and even snowguns!

The challenges and distances increase for older kids. The event has three heats, and each heat has a course tailored to its age group.

Registration for 2026 opening this fall!

Registration

Early registration includes entry into the race, a t-shirt, and a finisher's medal.

  • Mini Mountain runners crashing into the muddy water.
    Ages 10-12

    Wave 1

    Race Start: 10AM

  • Mini Mountain Challenge competitor sliding on a waterslide.
    Ages 7-9

    Wave 2

    Race Start: 10:30AM

  • Mini Mountain runners in the ballpit.
    Ages 4-6

    Wave 3

    Race Start: 11AM

Tips

All kids should bring clothes and shoes that can get dirty during the race and a change of clothes for after.

Registration is limited to 400 kids, with some spots available for same-day registration. It is recommended to sign up in advance to guarantee a spot and a t-shirt.

Sign up by May 31, 2026 to guarantee a shirt!

Kids waiting to start Mini Mountain Challenge at Sunday River
What to Expect

Course Preview

Less than one-quarter mile with obstacles designed for smaller kids. No swimming required.

1. Hay Tower

The start of the race will bring you over a mound of hay bales.

2. Shoe Sucker

This watery mud pit is about waist deep, but kids can choose to run through it or around the muddy sides. Make sure their shoes are tied tight! 

3. Rainbow Road

Kids who have played Mario Cart will understand this on as they run through a rainbow of pool noodles. 

4. Slippery Slide

A bigger version of your backyard slip and slide. 

5. Culvert Crossing

Kids will tunnel through one of three culverts. 

6. Ball Pit Crawl

Over 200 balls fill our extra colorful ball pit. 

7. Foam Party Finish

The final obstacle is a fun ending. Kids can run through a fluffy foam wall on their way to the finish line. 

Approximately one-half mile including many of the lower Tough Mountain obstacles. A short swim is required, with personal floatation devices available at the Slip 'N' Slide.

1. Hay Tower

The start of the race will bring you over a mound of hay bales

2. Shoe Sucker

This watery mud pit is about thigh deep. Make sure their shoes are tied tight.

3. Hurricane Alley

Twelve snowmaking guns blow waves of water into the air to charge through while making your way uphill.

4. Bust 'n' Burn

Run across 100 feet of deep, muddy ditches under a barrage of snow guns.

5. Snow & Steady

Balance your way across snowmaking pipes spanning a long and very dirty pond.

6. Slip 'N' Slide

This delightful obstacle is gravity-fed and deposits you into a pool with a mighty splash.

7. Steam Roller

Squeeze beneath this tight obstacle.

8. Muddy Pit

Your last chance to get muddy!

9. Foam Party

Clean off with a fluffy foam wall on their way to the finish line. 

Approximately one mile following the lower section of the Tough Mountain course. A short swim is required, with personal floatation devices available at the Slip 'N' Slide.

1. Hay Tower

The start of the race will bring you over a mound of hay bales

2. Shoe Sucker

This watery mud pit is knee to thigh deep. Make sure their shoes are tied tight.

3. Hurricane Alley

Twelve snowmaking guns blow waves of water into the air to charge through while making your way uphill.

4. Bust 'N' Burn

Run and climb across 100 feet of deep, muddy ditches under a barrage of snow guns. 

5. Sweet Spot

It get intense as snow guns blast at you.

6. Landslide

Think you have what it takes to climb UP this slippery slope?

7. Cage Crawl

Grab onto the cage above as you shimmy through muddy water. 

8. Snow 'n' Steady

Balance your way across snowmaking pipes spanning a long and very dirty pond.

9. Slip 'n' Slide

This delightful obstacle is gravity-fed and deposits you into a pool with a mighty splash.

10. Steam Roller

Squeeze beneath this tight obstacle.

11. Muddy Pit

Of course there's mud. Make your way through the mud pit and try not to lose your shoes. 

12. Foam Party

It's a lot of foam. Like a lot.

Participants at the Tough Mountain Challenge at Sunday River Resort, in Newry, Maine, climb up the side of a trail covered with water, tires, and rope during the obstacle course.

2026 Lodging Deal

Early registrants get exclusive access to Tough Mountain lodging deals. Why? Because you didn’t wait around like a maybe. You committed. You’re in. Now enjoy the perks.

Save up to 20% on resort lodging on Tough Mountain Challenge weekend using promo code TMC.

© Boyne Resorts 2025