- 24 Hours of 9 Mile - 24 hour MTB race near Wausau, Wisconsin. Registration and course information, and results.
- 24 Hours of Adrenalin - Official Site of the 24 Hours of Adrenalin endurance race series
- Arkansas Mountain Bike Championship Series - Official news, registration, results, and calendar of events.
- BC Bike Race - A 7 day mountain bike stage race from Victoria to Whistler, British Columbia, Canada. Includes course information, registration, and training advice.
- Black Sheep Cycling Club - Thunder Bay, Ontario based race series and club.
- Breckenridge 100 - A 100 mile mountain bike race in Breckenridge, Colorado featuring solo, duo and three person team competition. Includes schedule of events, registration information and race results.
- Cannondale Midwest Racing - The Midwest's finest mountain bike race team. Forums, photos, videos, and a web cam.
- Chequamegon Fat Tire Festival - Course information, registration, photos and results. Located in Cable, WI.
- Chico Racing - Mountain bike events in Ontario, Canada. Including; the 24 Hours of Summer Solstice, Gary Fisher Enduro Cup, and Trail Max Off-Road Duathlons.
- Cohutta 100 - A 100 mile mountain bike race in the Chattahoochee Forest of Tennessee and Georgia. Includes course information, registration and race results.
- Cow Town Cycling Team - Kansas City based. Includes schedule, message board, events, photos, news, sponsors, members list, and related links.
- Crank Racing - Boston based team focusing on area events. Included are pictures, schedules, tips and trail information.
- Dark Horse Racing - Michigan based all women's mountain bike team consisting of professional, elite and sport-level racers.
- DINO Mountain Bike Race Series - Indiana's largest and oldest mountain bike race series.
- Dirt Sweat and Gears - A 12 hour mountain bike race at the Cotton Mill Preserve in Fayetteville, Tennessee.
- Dirty Dozen 12 Hour Mountain Bike Relay Race - 6 and 12 hour mountain bike relay race in Texas. Teams log as many laps as possible on a 8 mile course with only one team member riding at a time.
- Dixie Desert Racing - St. George, Utah based team. Includes biographies, photo gallery, results and sponsor information.
- Durango MTB 100 - A 100 mile mountain bike race in Durango, Colorado. Includes course information, registration forms and race results.
- Eastern Fat Tire Association - Organizes New England Championship Series, trials competitions, fun-rides and advocacy events.
- Endoman Promotions, LLC - Promoter of the Peak 2 Peak Mountain Bike Epic in Thompsonville, Michigan and the Frozen Face Race held on Crystal Lake in February.
- Endurance 100 - A series of endurance mountain bike races, including 12 hour and 100 mile events, in Park City, Utah. Includes course information, registration forms and race results.
- Epic Mountain Bike - Focused on international epic mountain biking routes and race events.
- Fool's Gold MTB Races & Festival - The Fool's Gold 100 is Georgia's first and only 100 mile mountain bike race. This weekend event includes 50 and 100 mile race options and a festival. General information, registration, maps and results.
- Fun Promotions, LLC - Promoter of the Michigan Endurance Cup, a series of 12 and 24 hour races around the state. Includes registration information and series results.
- Gault Race Management - Electronic race timing service for running, cross-country, walking, cycling, mountain biking, cross country skiing, duathlons and triathlons.
- Gone Riding Race Promotions - Race promoter located in the Southeastern United States.
- Heartland Mountain Bike Championship Series - Mountain bike races in Kansas and Missouri. Results, photos, links, forum and relevant news.
- Iceman Cometh Challenge Bicycle Race - The largest 1-day mountain bike race in the United States, it is a 27 mile point-to-point race in Northern Michigan. Includes race information, registration and results.
- Jimena Cycling Coaching Services - Road and mountain bike coaching services including one on one training as well as road and mountain riding clinics.
- Keweenaw Chain Drive Mountain Bike Festival - Information about this annual event which tests mountain bikers' endurance and technical ability.
- Kona Midwest Racing Mountain Bike Team - Amateur cross-country and downhill race team in Michigan. Includes team roster, bios and weblog.
- La Ruta de los Conquistadores - Mountain bike race stage race in Costa Rica. Describes the route, general information, rules and registration. [English/Spanish]
- Leadville Trail 100 MTB Race - 100 mile MTB race and ultra-marathon in Leadville, Colorado. Registration information, maps and results.
- Liberty! Bicycles Off-Road Squeezer - A 30km MTB race in Saint Catharines, Ontario, Canada. Course description, entry forms and results.
- Lumberjack 100 - A 100 mile cross-country mountain bike race held at the Big-M Ski Area in Michigan's Manistee National Forest. Includes race information, registration and results.
- Michigan Youth Cycling Program - A youth development race team, the mission of which is to promote physical activity through mountain biking.
- Mountain Bike Ireland - Information, pictures and results from the three major offroad disciplines, cross country, downhill and cyclocross.
- Mountain Biker Racer - National events, training tips, interviews, racer profiles and photos.
- National Ultra MTB Endurance Series (NUE) - A 7 race series of 100 mile cross-country mountain bike events across the country. Includes series schedule, rules and a discussion board.
- Northants Mountain Bike Racing - Entry form and results for the Midlands Friday night summer series.
- Ohio Mountain Bike Championship Series - A 13 race series in various venues around Ohio and 1 in West Virginia. Includes series schedule, results and venue information.
- Ore To Shore Mountain Bike Epic - 48 mile and 24 mile point-to-point mountain bike race in Michigan's Upper Peninsula. Includes race information, registration and results.
- Paris To Ancaster - This mountain bike race is Ontario's largest single day cycling event. Includes event schedule, registration and results.
- Red Trail Racing - XC and Freeride Promoter hosting events in Lakeland and Ocala, FL
- Ride Against The Machine - Cycling club in the Denver, Colorado area.
- Ride424 - Dedicated to 24-hour and ultra-endurance mountain bike racing, this site offers a comprehensive calendar of North American events as well as some tips on training and nutrition for ultra competitions.
- Sand Creek Sports - Mountain bicycle racing information in the Pike's Peak region of Colorado.
- Shenandoah Mountain 100 - A 100 mile mountain bike race in Harrisonburg, Virginia. Includes course information, registration forms and race results.
- Sierra-Cascade Adventure Racing Sports - 6 hour endurance race in the Sierra-Nevada foothills near Sacramento, California. Solo and team categories.
- Simpson Desert Cycle Challenge: Australia - The annual mountain bike race across the Simpson Desert with course details, photos, results and contact information.
- Skinny's Fat Tire Racing - Wisconsin based team sponsored by Skinny's South Shore bistro - rider bios, results and event information.
- Tailwind Enterprises - Promoter of USAC cross-country and time trial mountain bike races, as well as cyclo-cross races, around Michigan.
- Team Turbo - Dedicated to mountain bike racing in Minnesota, Wisconsin and Michigan; with links to NORBA and World Cup races.
- Tennessee Bicycle Racing Association - Helps to promote, develop and grow the sport of cycling throughout the state of Tennessee through its member clubs. Features racing events calendar, results and point series for road and mountain bike.
- Texas Mountain Bike Racing Association - Offers racing calendar and results, flyers, forums, rules and regulations, and series point standings information.
- The Unofficial Paris-Ancaster Page - Unofficial fan site for the Paris to Ancaster mountain bike race. Includes photos and archived race results for past years.
- The Verge Dirt Derby Mountain Bike and Cyclocross Racing - The Verge Dirt Derby takes place on Tuesday nights in Austin, Texas between October and February, featuring short-track mountain bike, cyclocross, and velodrome-style racing, at the fully illuminated Austin/Del Valle Motocross Park.
- Tour d'Afrique Adventure Race - Tour d'Afrique is an 11,000km (7,000 miles) race from Cairo, Egypt to Cape Town, South Africa.
- Tour de Tykes - Mountain bike race in Danville, Pennsylvania offering expert, sport and beginner categories, plus a kids race. Includes course and registration information.
- Trail's Edge Cyclery Bike Team - Amateur mountain bike race team in Northville, Michigan.
- TransRockies Challenge - A mountain bike adventure race through the Canadian Rocky Mountains, includes race maps, race information, stage results and rider profiles.
- Vancouver Island Cup MTB Series - Mountain Biking Race Series on Vancouver Island BC, Canada. Race types include XC, DH, Marathon and Super D.
- Wilderness 101 Ultra Endurance Mountain Bike Race - An ultra-endurance 101 mile mountain bike race in State College, Pennsylvania. Includes schedule of events, registration information and results.
- Wisconsin Off Road Series (WORS) - Official site of this statewide series with 12 races from May through October. Schedule, rules, registration and results.
