Trail ratings are very subjective. Conditions change for many reasons, including weather and time of year. An easy trail can quickly become difficult when washed out by a rainstorm or blocked by a fallen rock. You must be the final judge of a trail’s condition on the day you drive it. If any part of a trail is difficult, the entire trail is rated difficult. You may be able to drive a significant portion of a trail before reaching the difficult spot. Read each trail description carefully for specific information.
Gravel, dirt, clay, sand, or mildly rocky road. Gentle grades. Water levels low except during periods of heavy runoff. Full-width single lane or wider with adequate room to pass most of the time. Where shelf conditions exist, road is wide with minor sideways tilt. Clay roads, when wet, can significantly increase difficulty. Some trails can be driven in 2WD under ideal conditions. Others will need 4WD and, in some cases, low-range gearing.
Rutted dirt or rocky road. Careful tire placement may be necessary. Some grades fairly steep but manageable if dry. Soft sand possible. Sideways tilt will require caution. Narrow shelf roads possible. Backing may be necessary to pass. Water depths passable for stock high-clearance vehicles except during periods of heavy runoff. Mud holes may be present especially in the spring. Undercarriage may scrape occasionally depending on ground clearance. Rock-stacking may be necessary in some cases. Brush may touch vehicle. Four-wheel drive, low range, and higher ground clearance required in most cases. Standard factory skid plates and tow hooks recommended on many trails.
Grades can be very steep with severe ground undulation and large boulders. Sideways tilt can be extreme. Sand hills very steep with soft downslopes. Deep water crossings possible. Shelf roads extremely narrow; use caution in full-size vehicle. Passing may be difficult with backing required for long distances. Brush may scratch sides of vehicle. Body damage possible. Some trails suitable for more aggressive stock vehicles but most trails require vehicle modification. Lifts, differential lockers, aggressive articulation, and/or winches recommended in many cases. Skid plates and tow hooks required.