The Dorba trail was primarily created through the efforts of the Dallas Off Road Bicycle Association. They worked closely with Cedar Hill State Park management to help design and build the this trail. Their efforts ened up returning a big dividend for off road bicyclists as the trail is now considered one the top mountain bike trails in the state. Dorba Trail, Cedar Hill State ParkDorba has has three loops: Short (2.5 Miles), Middle (7 Miles) and Outer (10+ miles). The paths pass through wooded areas but are fairly open for much of their length. Having the sun beating down on you can make a warm summer hike considerable warmer - be sure to plan ahead and bring an adequate amount of water with you. The trail is what you might expect from a design made for mountain biking. There are plenty of twists, turns, and ups and downs. None of this is too strenuous but if you are looking for an easy, short hike you will be better of using one of the other three trails. Dorba Trail, Cedar Hill State Park The most important rule on the Dorba trail is that bikers travel in a clockwise direction and hikers travel counter-clockwise. When hiking make sure you are attentive to watching and listening for approaching bicyclists. Their faster rate of travel, the many Dorba Trail, Cedar Hill State Park twists and turns of the trail, and the fact a biker cannot "hear" a walker all make it difficult for a rider to know there is a hiker ahead. On the other hand, if you are walking it is relatively easy for you to hear approaching riders - if you are paying attention. When you hear a bicyclist quickly find a place to stand, just off the trail, and allow the biker(s) to pass.