MAMMOTH Endurance Gravel

Come and enjoy miles on miles of gravel roads around beautiful Wellsboro, Pennsylvania home of the PA Grand Canyon! We have another fresh course for 2027, a few roads overlap from previous years courses and we are changing the direction of travel on some favorite roads from years prior. This route, like every year, is a BEAST!

The Full MAMMOTH course is 136 miles and roughly 13,000 ft.+ of elevation gain to challenge even the most advanced riders. Those of you that choose to attempt the Full MAMMOTH will ride two separate non overlapping loops. Both loops begin and end at the same place in downtown Wellsboro. The morning loop is 71 miles in length and afternoon is 65 miles. Breakfast, lunch, dinner  and two aid stops are included with this option.

Half MAMMOTH riders will just ride the 71 mile morning loop along with the Full MAMMOTH riders but will be done riding after the morning loop. Breakfast, lunch and the morning aid stop are included with this option.

The Quarter MAMMOTH Route is an abbreviated version of what the Half MAMMOTH Route riders are doing. You still get breakfast and lunch as well as stopping at Aid 1 for espresso and baked goods but you only ride 29 miles and climb about 3000 ft. Not necessarily "beginner friendly" but still a challenge without absolutely destroying yourself.  Breakfast, lunch and the morning aid stop are included with this option.

All food choices are selected in the registration process. There will be Vegan options available at all meals and aid stations.

Roughly halfway through each loop there will be an absolute banger of an aid station. We work with local businesses to provide hearty food at aid stations, as well as the essentials. The morning aid stop is included with all registrations. The afternoon stop is included with only Full MAMMOTH Registrations.

Please keep in mind that there will be a support vehicle patrolling the course as well as sweep riders bringing up the rear but we highly recommend that you carry what you need for  roughly  35 mile stretches.

*THIS EVENT WILL HAPPEN RAIN OR SHINE.  We DO NOT offer refunds or deferrals as all the event food and promotional items are paid for and ordered ahead of time. PLEASE CONSIDER ADDING REG INSURANCE OFFERED THROUGH BIKEREG IF YOU ARE WORRIED ABOUT WEATHER ETC. AND GETTING REFUNDED.

*We try our best to mark this monster route but the weather the previous days to the event really can dictate how well it is marked. The safest option is to use a bicycle computer with navigation or a phone app like Komoot or RWGPS for navigation. A GPX file will be sent to the email you use to register a few weeks prior to the event.

All event day check in, meals, and after ride hang out will all be centralized around the Patterson Trailhead building.

Free parking is available at this venue. If you stay at the Hotels located in downtown Wellsboro you will only be about a 2 minute bicycle ride from the Start/Mid/Finish and riding down would leave more spots available for those that drove in, this is not a requirement just a suggestion.

If you have any additional questions please feel free to email us or PM us on Facebook or Instagram also keep an eye out on mammothendurancegravel.com for resources and information.