start at timberline lodge. The terrain is from loose sand, dirt, and rocks to packed dirt, mud, gravel. Watch the jumps at the beginning (first 2 miles) they are very dangerous. It gets very fast the trail widens a little and is pretty smooth. You have to cross hwy. 26. After that it is an old gravel road tha is not used anymore for about 4 miles. There is one uphill right before crossing hwy. 26 that is steep but not very long. If you are energetic you can ride this trail twice before lunch.
How to get there:
Head East out of portland on hwy. 26, follow signs to rhodedendron park one car at the park/campground on the eastside of the town thats were the trail ends. Keep driving east follow signs to timberline lodge park in the parking lot,ride west from the lodge
about 100 feet or till you see the trail giong down!
watch those begining jumps, this is a very fast trail you can go as fast as you possibly can.