There are 12.4 kilometers (7.7 miles) of trails that are marked with blue diamonds. Brush Hollow offers challenges to a wide range of skill levels. The section of trail located along Big Mill Creek is designated EASIEST and is suitable for beginners. The Brushy Gap and Elli Loops are designated MORE DIFFICULT. The Challenger Loop is designated MOST DIFFICULT and is suitable for experienced skiers. "Your Are Here" signs are located at trail junctions and other key locations. The trail is not groomed.

Scenic overlooks of the Big Mill Creek valley are located on the Challenger and Elli Loops. Portions of the trail system are located abandoned railroad grades that were used for logging at the turn of the century. In the spring many of the trails are decorated with wildflowers. This area is also a good place to view wildlife.

The trail is 5.6 miles and is marked with gray diamonds. The trail starts at the Brush Hollow Trail and ends at the Twin Lakes Trail near Twin Lakes Recreation Area. The Twin Lakes Trail connects Twin Lakes Recreation Area with the North Country National Scenic Trail. Using this network of trails can take backpackers all across the Allegheny National Forest.

The trail is best suited to hikers, although it is open to skiing and mountain biking. The Mill Creek Trail parallels Big Mill Creek, a popular trout stream.

These trails are for hiking, cross-country skiing and mountain biking. Motorized vehicles, ATV''s and snowmobiles are not allowed on any of the trails. Forest trails policy prohibits the use of saddle, pack or draft animals on hiking or cross-country ski trails. Camping is allowed along the trail as long as your equipment does not block the trail.

The Brush Hollow Trails are designated EASIEST (for warm-up and beginners), MORE DIFFICULT (requires some skill and challenge), and MOST DIFFICULT (for experienced skiers). Hills are marked with Caution signs. Please ski safely and within your level of control. Ski to the right when approaching other skiers or when being passed by other skiers: Track Right!

Please remember these safety tips: Dress in layers and always wear hats and gloves. Carry extra wax. Ski with a friend, especially at night. Boil water for drinking. Be aware that these trails are used by hunters in the spring and fall. It is a good idea to wear bright fluorescent colored clothing during these periods.

Practice No Trace Ethics-Pack it in, Pack it out, and for sanitary disposal of wastes, dig a pit at least 6 inches deep and at least 200 feet from water.