terrain monkey mud runs

conquer YOUR terrain

Flagstaff Extreme Terrain Mud Run: 7.26.14

The cool pine forests at the historic Fort Tuthill County Park make the perfect spot for a mud run! Join us at the Flagstaff Extreme Adventure Course for summer Arizona temperatures in the 70s and race in Monsoon season with tons of mud!

Get the skinny on the Flagstaff Extreme Terrain Mud Run details...

Everything from chip timing, what time to arrive and where to park. Read our Race Day Details for info about all of our races.

Location Packet Pickup Teams Awards and Timing Water Stations Spectators Food and Drink Accommodations


The Flagstaff Extreme Terrain Mud Run is 3 miles south of Flagstaff, Arizona, in the historic Fort Tuthill County Park. Take exit 337 of of I-17 and go west. Our course will start and finish underneath the treetop adventure course FLG Extreme with zip lines, balance beams, and cargo nets above the course.

Packet Pickup

There will be three different packet pickups available:

  1. Thursday, July 24, 5p-7p. Mother Road Brewing (7 Mikes Pike) from 5p-7p.
  2. Friday, July 25, 4p-7p. At the start line at Fort Tuthill (Exit I-17 at exit 337 and go west) .
  3. Saturday morning before the event. Gates open at 8am. Please arrive 1 hour before your wave start time to allow time to get your packet race morning.


You can race on a team or solo, but mud runs with friends are so much more fun!

After buying an entry, you can decide if you want to race on a team. You will have the option to create a new team or join one. So you don't have to sign your whole team up at the same time.

Why race on a team? Teams of 5 or larger (no limit!) are eligible for our best dressed team award, largest team award, and each teammate will get a coupon to save on future races and merchandise!

Awards and Timing

This is a race and all athletes will be timed! Your time will be slower than a 5k or 10k race, but it's always nice to see how you rank compared to fellow athletes.

We use chip timing so you can see how fast you really are and we provide you with a free printable finisher certificate online after the race.

The 9am wave of the 3 mile and 5+ mile courses is a competitive wave. The fastest three men and women in each distance will receive a free entry to another terrain Mud Run.

The Endurance distance is two laps on the 5+ mile course and all athletes must start at 9am. The fastest three men and women in the Endurance wave will be eligible for prizes.

Water Stations

There are aid stations with water approximately every mile. If you prefer electrolyte fluids, gels, etc., please plan to carry your own supplies.


We create a finish area that includes many exciting obstacles for spectators to watch their family and friends on.

There is no charge for spectators at our Flagstaff event and we encourage you to get a cold beverage, grab a bite to eat and hang out under the ziplines to cheer on your friends and family!

Food and Drink

Each athlete will get a free beverage: a Mother Road beer, or bottled water.

Lunch and extra beverages will be available for purchase.

No outside coolers are allowed at the venue. You may bring water, energy drinks and snacks to the site but please leave other items at your vehicle.


Save some money and book with our partners.

Camping is available just 100 yards from the start line for as little as $16 per site per night. Get details on the Fort Tuthill website.

The Fort Tuthill Campground does not have showers but the Woody Mountain Campground is 5 miles away from the race site and similarly priced.


view cart

Ready? Waves fill up early and prices increase! Register now and save.

Support local organizations.

Part of your entry fee goes to their causes and you can send more love here:

Who's racing?

Save money and buy entries for your friends now. You can buy as many entries as you want and take your time deciding who's racing with you. You don't even need to tell us who's racing until race day.

Wave start times

After buying your entries you choose your wave start time. Current availability is: 8:50am (Elite Men), 8:55am (Elite Women), 12:00pm, 12:15pm (5k Only). Please arrive 1 hour before your start time.

Course info

5k Kids

For ages 9-15. Ages 9-13 must race with a parent. This course follows the regular 5k course, it's just cheaper for those under 16.


Best for first timers and athletes that want to have a great time. If you can jog 3 miles and do a couple pushups and sit ups, you can do our 5k course! You'll be ready to slosh in the mud, jump over 6 foot high walls, 12 foot high rope walls, and 16 foot high cargo nets.


If the short course sounds too easy, get ready for a tougher course with 5-7 miles of running and over 20 obstacles to really challenge you. This is for athletes that want a tougher course and more obstacles.


Two laps on our 10k. For athletes that like to run and do over 20 obstacles, twice. Cash prizes and gear prizes for top winners. You must do the 9am wave if you choose this race.

You can always change your course after purchasing your entry by logging in to your race account.

Non-profit partners

terrain Flagstaff Extreme Terrain Mud Run Mud Run is a charity event and proceeds support several local organizations.

We donate to their causes and you can above when you buy an entry.

Your donation will be made to the organization you choose which usually makes you eligible for a tax write-off! All donations are 100% non-refundable.

By making a donation you will be sharing your email address and name with the charity you choose so they may contact you with a donation receipt.

Save money

Prices go up as we get closer to the event, mark your calendar!

  • 5k Kids
  • $35.00
  • Price increases:
  • Race day: $45.00
  • Add
  • 5k
  • $60.00
  • Price increases:
  • Race day: $70.00
  • Add
  • 10k
  • $65.00
  • Price increases:
  • Race day: $75.00
  • Add
  • 20k
  • $70.00
  • Price increases:
  • Race day: $80.00
  • Add

Prices do not include $5 processing fee.

Race for free

Sign up and share a link with friends. When 4 friends join you, you race for free!

Or, simply buy 5 entries now and we'll refund one of them after the race. Read the details.

Buy multiple entries now and watch the savings add up.

Buy three or more entries now and save.

  • Buy 3+ entries and each person saves $5.
  • Buy 5+ entries and each person saves $7.
  • Buy 15+ entries and each person saves $15.

Team or solo?

It's fine to race solo, but more fun as a team!

Buy 5 entries now so you and your teammates can save and you don't have to decide who's racing until race day.

After checking out you can choose a team name. We give you a team code to share with friends and anyone can join your team later. Make sure to have 5 teammates added the day before the race and each teammate will get a gift certificate on race day. There's no limit to how many teammates you have, we even have an award for the largest team!

Course Guides

Join our team on race as a Course Guide, way more fun that a 'volunteer.'

Not ready to race yet? Be a Course Guide instead and you can race for free next time we're in town! Learn more and signup to be part of the terrain Race Day Team!

Waiver and refunds

Non-refundable, fully transferable...

Instead of offering a refund we allow you to transfer your entry to another person or a future race. Learn more about our refund policy.

And our lawyer says...

Participants and spectators will need to agree to our liability waiver.

Thanks goes to...

  • New Roots Personal Training

    My hope is that you will look at your visit to this site as your first step in the direction of recapturing your life.

  • Toyota

    Visit Toyota in Flagstaff and at the Terrain finish line.

  • Babbitt's Backcountry

    Visit Babbitt's Backcountry in historic downtown Flagstaff to get outfitted for your race! Pick up some New Balance shoes and some skratch hydration drink mix, our staff loves it!

  • Fratelli Pizza

    Wear your Terrain shirt when you visit Fratelli and save 10 percent!

  • United Way

    Improving lives by mobilizing communities

  • KIND Snacks

    All-natural, gluten free, and made from ingredients you can see and pronounce, KIND Healthy Snacks provide healthy and delicious products that are sure to satisfy your hunger pangs without the guilty feeling.

  • Pay 'N Take

    Wear your Terrain shirt when you visit Pay 'N Take for all day long Happy Hour pricing Thu-Sun.

  • Collins

    Enjoy our Happy Hour Specials with your Terrain t-shirt all day Thu-Sun.

  • Friends of Coco County Parks

    FCCP supports the Coconino County Parks and Recreation Department's efforts in land conservation

  • Mother Road

    Proudly brewed in Flagstaff, AZ

  • Arizona Oncology Foundation

    Providing integrative services that promote health and healing

  • Monsoons

    Chinese Bistro and Sushi

  • Arizona Snowbowl

    Visit Snowbowl for sunscreen and free sunglasses before the event!

  • Body Shop

    The Body Shop Physical Therapy Clinic employs a broader perspective on patient care.