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FunTreks Guidebooks for ATV, SUV, 4x4, and Motorcycle - Jeep trails for all vehicles!

Please read carefully before attempting any FunTreks trail.


suvsymbolSUV or Pickup Truck
This symbol represents a street-licensed stock sport utility vehicle or pickup truck with 4-wheel-drive. Minimum ground clearance should be 7” to 8” at low point of vehicle and about a foot at rocker panel. Low range is recommended for rocky, steep and high elevation trails. More aggressive models will have higher clearance and factory off-road enhancements such as skid plates, tow points and differential lockers. Longer and wider vehicles require more ground clearance. In addition to vehicle capability and size, other factors such as driver’s skill, tires and tolerance for damage greatly affect which trails can be driven. Every vehicle is different and every trail is different. Judgment as to whether a vehicle is capable of traversing a specific trail lies solely with the owner of the vehicle. Read each trail description carefully.

hardcoresymbolHard-core Modified.
This symbol represents street-licensed vehicles that have been significantly modified for difficult hard-core situations. Most modifications are custom, but there are specific factory models that meet hardcore standards. Minimal tire size starts at 32", but 33" to 37", is more typical. Lifts of 3" or more, heavy-duty skid plates and accessories, increased articulation and differential lockers are the norm. Many additional modifications are possible. These vehicles should be able to handle all trails in our books. Extreme trails require maximum modifications.

utvsymbol60"-Wide Side-by-Sides.
This symbol represents what are commonly called UTVs, or Utility Terrain Vehicles. They are generally considered unlicensed vehicles; however, some states allow licensing if modified for street use. Out-of-state street licensing is not recognized in Colorado, but a few local jurisdictions allow limited use on some streets. For the purposes of our books, UTV side-by-sides are considered unlicensed vehicles. Capability of these vehicles ranges from simple utility uses on ranches and farms to extreme modifications for hard-core trail use. Their width prohibits use on 50" ATV trails. For our books, 4-wheel-drive capability is assumed. When you see this symbol at the top of the page, it primarily indicates the trail allows unlicensed vehicles. The ratings of easy, moderate and difficult are open to far greater interpretation. Only the operator can determine the appropriateness of the trail.

atvsymbol50"-Wide ATVs and Side-by-Sides.
This symbol represents ATVs, or All Terrain Vehicles, not wider than 50". It also represents the newest craze—50"-wide side-by-sides (e.g., the “RZR”). Both are generally considered unlicensed vehicles; however, some states allow licensing if modified for street use. Out-of-state street licensing is not recognized in Colorado, but a few local jurisdictions allow limited use on some streets. For the purposes of our books they are considered unlicensed vehicles. These vehicles range in size from tiny 2WD machines for kids to large 4WD machines for adults. Generally, trails in our books are for 4-wheel-drive ATVs, but we know some 2-wheel drive units can be equally capable. When you see this symbol at the top of the page, it primarily indicates the trail allows unlicensed vehicles. The ratings of easy, moderate and difficult are open to far greater interpretation. Only the operator can determine the appropriateness of the trail.

dirtbikesymbolDirt Bikes (Unlicensed).
This symbol represents unlicensed dirt bikes only. Licensed, dual-purpose bikes can ride all trails in our books. The symbol does not mean the trail is a single-track trail; it only means unlicensed dirt bikes are allowed. All trails in our 4x4 books are wide enough for SUVs and Jeeps, but they are still great rides for dirt bikes. Some trails connect to 50"-wide and single track trails. These narrower trails are specified on Motor Vehicle Use Maps. Easy, moderate and difficult ratings do not apply to dirt bikes, but they do provide general information of what to expect. In addition, driving-time estimates will be less for dirt bikes.

 

TRAIL RATINGS DEFINED

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.

Easy
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.

Moderate
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.

Difficult
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.