In 2026, we are adding a new event, a 65 mile Gravel Grinder! We are still offering our tried-and-true road routes as well. Come see us on September 26th!
Event details and schedule
Rides begin at 7:00 a.m. Parking is plentiful at the Inter-Mountain Fairgrounds in McArthur. Bring clothing layers, as it's pretty cool in the mornings this time of year.
Race info
Weekend at Burney Run/Walk/CrawlGet ready for an unforgettable trail adventure at the Weekend at Burney Run/Walk/Crawl! This laid-back event features a stunning and challenging 4.6-mile (approximate) looped course that winds through a beautiful private property near Baum Lake. Whether you're a hardcore ultra-runner, a casual walker, or bringing your burro for the burro race, all race distances and timed events share the same loop, showcasing vibrant fall colors, diverse wildlife, and breathtaking scenery. Run, walk, crawl—or trot with your ass—this is the trail party you don’t want to miss!Course HighlightsTerrain: A perfect 50/50 mix of flowy single-track trail and dirt service road, with rolling hills and wooded areas for a varied, fun challenge. With approximately 370 ft of elevation gain and loss per loop.Scenic Views: Swing by the serene Baum Lake on every loop and soak in the starry night sky during evening runs—pure magic!Loop Design: The looped course lets you track your progress lap by lap. Run as much or as little as you want in your chosen time—super chill, low-pressure vibes!Aid Station/Staging Area: Our start/finish hub is loaded with runner-friendly snacks, soda, water, electrolytes, hot made-to-order food, and a cozy broth bar to keep you fueled and smiling.Race Options and Start Times/Dates48-Hour Challenge: Starts Thursday at 6:00 PM and ends Saturday at 6:00 PM—plenty of time to rack up the miles!24-Hour Challenge: Kicks off Friday at 6:00 PM and wraps up Saturday at 6:00 PM for an epic overnight adventure.Other Distances: Start Saturday morning at your designated time—options for every pace and distance.Set against a gorgeous backdrop, this exhilarating race delivers a memorable trail party with epic views and awesome company!
Race Swag and New this year CASH prize for most miles run!
Sign up before the swag deadline to score a sweet T-shirt, buff, and Intermountain Endurance coaster. Solo runners hitting 100 miles or more earn a legit belt buckle— and if you crush 100 miles in 24 hours, you’ll snag a special ultra buckle! We’re dishing out awards for the most miles run, including a cash prize (built from $10 of every registration fee—pot’s at $230 and growing!). Plus, medals for everyone completing one or more loops. Swag deadline: October 1st, 2025—don’t sleep on it!
Driving Directions
Head to 22800 Guest Ranch Rd, Cassel, CA 96016. Easy routes from nearby:From Burney: Take 299 E, turn right on Hat Creek Powerhouse No. 2 Rd., then straight on Guest Ranch Rd.From McCloud: Take 89 S, turn left on 299 E, right on Hat Creek Powerhouse No. 2 Rd., then straight on Guest Ranch Rd.From Old Station: Take 89 N, turn right on 299 E, right on Hat Creek Powerhouse No. 2 Rd., then straight on Guest Ranch Rd.From Fall River Mills: Take 299 W, turn left on Hat Creek Powerhouse No. 2 Rd., then straight on Guest Ranch Rd.
Deferral policy
No refunds, but our deferral policy is super flexible: Defer your registration for any reason up to one week before race day! You can also transfer your spot anytime before one day prior to the start.
Burro race specific info
Burro racers, bring your own donkey and join the fun! You’re responsible for your ass. Treat your burro humanely—no striking, dragging, or mistreatment, or you’re disqualified. For an official finish, equip your burro with a pack saddle carrying a shovel, pick, and pan (attach securely, your call on how). Max 15-foot rope length. If you’ve got a Jack, keep him under control. Your burro can’t carry you, but you’re welcome to try carrying them—good luck! Let’s grow this assome sport: Run the 4.6-mile loop as many times as you and your burro want in 12 hours, or choose the 4.6- or 13.8-mile options. (12-hour burro racers can swap burros and flip the loop direction for extra fun!)
Event's current local time: 1:52 AM PT
Burney Mountain 100 A Journey Through Lassen National Forest and the Thousand Lakes WildernessThe Burney Mountain 100 is Northern California’s most scenic and immersive 100‑mile experience—one unforgettable loop through Lassen National Forest, the Burney Basin, and the rugged Thousand Lakes Wilderness. Starting and finishing at the Burney Mountain Guest Ranch, runners travel through some of the most pristine and remote landscapes in the region, surrounded by volcanic peaks, deep forests, and sweeping high‑country vistas.Course Options Based on SnowmeltBecause this race takes place in true mountain terrain, the final route depends on seasonal snow conditions. Four possible course variations—Course A, B, C, and D—allow flexibility while preserving the spirit and challenge of the event.Course A is the only version that fully summits Magee Peak. It is a rare treat, available only in low‑snow years when the high country is safely accessible.Courses B, C, and D adjust the upper‑elevation sections
depending on how much snow remains and how high we can safely get runners.Regardless of the year, each course maintains the same overall character: remote, wild, and breathtaking.Elevation, Terrain & SceneryWith approximately 15,000 feet of cumulative climbing, the Burney Mountain 100 delivers a powerful mix of challenge and beauty. From the flanks of Burney Mountain, runners take in panoramic views of Mount Lassen, Mount Shasta, the Hat Creek Rim, and the vast volcanic landscapes that define this region.The terrain shifts constantly—rocky ridgelines, soft forest floor, open high‑country slopes, and deep wilderness singletrack—creating a dynamic and engaging journey from start to finish.A Dawn Start for Maximum BeautyThe 4:30 am start gives runners the chance to experience the mountains waking up. Dawn light spills across the forests, lakes, and volcanic peaks, offering some of the most memorable moments of the entire race.A Celebration of Northern California’s Wildest PlacesThis race is
more than a test of endurance—it’s a full immersion into one of the most awe‑inspiring landscapes in the West. Whether you’re weaving through dense forest or climbing above the tree line, every mile pulls you deeper into the heart of Northern California’s volcanic wilderness.Trail Work & Volunteer RequirementBeginning in 2027, all Burney Mountain 100 runners must complete:8 hours of trail work, or12 hours of race volunteer serviceFull details, submission instructions, and deadlines are available in the Runner’s Guide.You MUST read the runners guide.Runners must have the GPX file downloaded on your watch or phone. Course Map See website for the link to the GPX file Runner's Guide Visit our website for the link to the runner's guide. This guide has aid station, drop bag, crew, and pacer information and more. All Intermountain Endurance runs are cup less races. Please be prepared with your own reusable cup. The runners guide has essential information. Trail Work Trail Work & Volunteer
RequirementBeginning in 2027, all Burney Mountain 100 runners must complete:8 hours of trail work, or12 hours of race volunteer serviceFull details, submission instructions, and deadlines are available in the Runner’s Guide. Camping Camping at Burney Mountain Guest RanchAll runners and crew receive free dry camping on Thursday, Friday, and Saturday nights—covered by Intermountain Endurance.If you’d like to upgrade your stay, the ranch offers multiple lodging options, and all runners receive a $25 discount on upgrades.Explore lodging options here:https://burneymountain.comAmenities include:RestaurantSaltwater poolLaundryCornholeNearby attractions: Burney Falls, Lava Tunnel, Lassen National Park, Chalk Cave, Hat Creek, Pit River, Baum Lake, Lake Britton, and more—an incredible destination for a race‑cation. Deferral policy Deferral & Refund PolicyNo Refunds — No ExceptionsAll race entries are non‑refundable, non‑cancellable, and non‑eligible for partial refunds under any circumstances. This
includes—but is not limited to—injury, illness, scheduling conflicts, travel issues, or personal emergencies.Generous Deferral & Transfer OptionsTo support our runners, we offer flexible alternatives:Deferrals: You may defer your race entry for any reason up to one week before race day.Transfers: You may transfer your registration to another runner up to one day before race start.These policies allow us to maintain event quality and keep the race sustainable while still giving runners meaningful options. Event's current local time: 2:14 AM PT