Welcome to our Calendar of Events.
Arkansas Outside is NOT the owner or organizer of these events (unless otherwise noted). We aggregate these events into this one place to allow our readers a chance to see what outdoor recreation events are going on around the state. There is no need for FOMO when playing outside.
If you’re looking for a specific type of event you can use the following links:
- Running (Road & Trail)
- Cycling (Road, Mountain, Gravel, etc.)
- Multisport (Triathlon, Duathlon, Adventure Racing, etc.)
- Paddling (Kayak, Canoe, Raft, Tubing, etc.)
- Climbing (Rocks, not trees)
- Trail Love Days (Volunteer Opportunities)
Are we missing an event? Enter your event here:
We’ll see you on the trail.
- This event has passed.
21st Annual Buffalo Headwaters Challenge

The Buffalo Headwaters Challenge presented by Adventure Subaru is a three-day, all-inclusive, “off the grid” mountain bike and trail running festival. It includes 5 meals, libations, primitive tent and RV camping, live music, and amazing trails, highlighted by the annual “Challenge” ride and this year the new run on Saturday, January 31st, 2026. The “Challenge” ride consists of a 35-mile semi-supported backcountry mountain bike experience, a 30 K and 15 K challenge run with a few marked bailouts along the way. It’s a ride, not a race… just finishing is winning. During your ride, you will possibly encounter DJs in the woods and of course, the infamous grilled cheese and soup at the iconic fire tower. Additionally, on Sunday, you will have the option to join the gravel challenge group ride to the Buffalo Outdoor Center or use your wristband at the Buffalo Outdoor Center, which will provide you with free shuttles for the DH runs all day.
Important! This is our annual fundraiser for the club and goes a long way in providing the needed tools and materials that go into the 10,000 hours plus volunteers put in each year. A large portion of this years proceeds will go directly into trail maintenance at the headwaters. With that in mind this is a non refundable event. If weather becomes an issue we will reschedule event to a later date but will not be offering refunds. Thank you for your understanding.
All attendees will receive a pair of custom event socks.
Complete your challenge and receive your patch once you check back in.
We will have post ride yoga on Saturday.
-A limited number of primitive RV spots are available for an additional $25.00. (no hook ups, you are paying for the space)
-Tickets will be limited in quantity.
-For 5 meals, live bands, free beverages, killer routes , amazing humans, and a special swag bag you aren’t going to find a better deal!
Dinners provided by Phat Tire Bike Shop, Pro Chill and OORC.
Thanks for you continued support and much gratitude to all of our sponsors.
Lunch at the fire tower provided by The Buffalo Outdoor Center
Beverages by Trailside Coffee Co, Fossil Cove Brewery, Liquor World and the OORC
Breakfasts provided by Ozark Natural Foods and the OORC.
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