Does anyone know of any trails in the U.S. that are over a hundred miles of off road? I read something a few years back about a group of people trying to connect off road trails from Mexico all the way to Canada. I have not been able to find anything about it since. I'm looking for something like that. Of course, I realize it will be on a much smaller scale if at all (maybe the majority of one state?).

WELCOME TO THE POSTER... If you want a lot of trails to ride, try the ones up at WINDROCK MOUNTAIN on the COAK CREEK MINING COMPANY property in Tennessee....with over 72,000 acres, theres a lot of trails there to ride and check out... some easy, some moderate and a couple of extreme ones here and there.
Theres even a hand full of giant Windmills to grace your eyes on... good luck with you adventures... if you find that national trail, pop in and share what you find with us....

HAVA A NICE DAY....

Also, the Hatfield-McCoy trail system has over 600+ miles of trails and they are constantly expanding it.You can check it out at Hatfield-McCoy ATV Trails. Their goal is to one day have over 2000 miles of trails.