This is it - Colorado's top-selling 4x4 guidebook, the one everyone tells you to get if you are going off-roading in Colorado. Completely redone, this fourth edition is more fun than ever. All trails have been freshly driven and updated. Inside you will find 100 of the best trails in Colorado. All are west of I-25 and south of I-70. Many are convenient to Denver and the Front Range. (For trails north of I-70 see FunTreks Guide to Northern Colorado Backroads & 4-Wheel-Drive Trails, 4th Edition.) Whether you are a newcomer to 4-wheeling or an experienced veteran, we guarantee you will have fun. The book features 26 easy family fun runs, 32 moderate sport utility adventures and 42 difficult hard-core challenges. Ninety-two trails are open to unlicensed ATVs, side-by-sides, and dirt bikes. The book features 8 new trails not in the previous edition. Six are on the Western Slope in the Grand Junction area. Each trail features a turn-by-turn mileage log with GPS waypoints referenced to a custom map. The trail description includes an overview, a detailed rating, time and distance driven, highest elevation, contact phone numbers to call for trail conditions, best times to go and directions to the start. Also included are reverse mileages and historical highlights. In total, the book includes 109 maps and over 520 photos. A new easy-open spiral binding features a wrap-around closure flap that doubles as a placeholder. Interior pages have been beefed up for extra durability. Visit FunTreks website for free GPS data for individual trails. We also sell SD cards for each of our books for use in Garmin NUVI and Garmin handheld devices. See our new IOS (Apple) app and use it along with the book for your own adventures!