Dual sport & adventure riders, It occurs to me that it would be useful to have an agreed upon rating system for rating the difficulty of non-paved roads, similar to the rating system used by 4x4ers. I've never seen or heard of such a rating for motorcycle travel so I took the ratings 4x4ers use and modified them for adventure/dual sport motorcycle travel. Below is my initial attempt at classifying non-paved roads. What suggestions do you have for modifying this system? Are 4 classes enough? Are the descriptions of the 4 classes adequate? (By the way, this rating system intentionally does not include trails / single track.) Motorcycle Non-Paved Road Rating System The following rating system is for establishing the relative difficulty of non-paved roads for travel by adventure and dual sport motorcycles. Class 1: Improved dirt, gravel, etc. Passable by any motorcycle capable of off-pavement travel. Examples of class 1 roads include: Old Maverick Road, Big Bend National Park, Texas Salt Branch Road, Mason County, Texas Old Junction Road, Kimble County, Texas CR 350 (best DS road outside of Big Bend), Edwards County, Texas Hackberry Road, Real County, Texas Class 2: Poorly maintained dirt, gravel, etc. Rocks, sand, mud holes, ruts, inclines, water crossings, or other similar obstacles make this road difficult for larger, heavier adventure motorcycles and requires some rough terrain riding skills. Example of class 2 roads include: Road to Batopilas, Copper Canyon, Mexico Northern end of Pinto Canyon Road, Big Bend region, Texas River Road, Big Bend National Park, Texas Sandy Creek Road, Llano County, Texas Bullhead Road (connects RR3235 to RR 2631), Real County, Texas Class 3: Rugged, unmaintained dirt, gravel, etc. roads. Significant obstacles such as moderate sized rocks, deep sand, deep or long mud sections, deep & wide water crossings, and/or steep inclines with loose terrain & tentative traction make this road/trail extremely difficult for large adventure bikes and very challenging for medium dual sport motorcycles such as 650cc thumpers. Advanced rough terrain / off-road riding skills advised. Examples of class 3 roads include: Middle section of Kent Creek Ranch road, Real County, Texas Class 4: Extremely rugged road that contains highly challenging obstacles such as steep drop-offs, deep & fast moving water crossings, very steep inclines with loose surface, boulders, deep & long mud sections, downed trees completely blocking the road, or deep & long sand sections. Generally not passable by large adventure bikes, extremely difficult for medium dual sport motorcycles such as 650cc thumpers, and very challenging for smaller dual sport / trail bikes. Should be attempted only by those with significant rough terrain / off-road riding skills and experience.