Many of the Durty Dabber members participate in as sport known as Observed Trials. This unique type of competition is not about pure speed but rather a careful finesse of maneuvering the motorcycle over various obstacles including natural and man-made. The participants are required to make it through a timed section racing the clock and are not allowed to put their feet down (Dab) during the run otherwise face penalties. The Durty Dabbers participate in many events around the country as well as host one here in central PA.

One way to experience several different types of riding conditions while staying on the same machine is to ride a Dual-Sport motorcycle. Central PA is home to one of the nation's largest offroad motorcycle rides: The Annual Durty Dabber Great Adventure Dual Sport.
http://www.durtydabbers.com/trials/wp-content/uploads/2011/04/Durty-Dabbers-14-Flyer-2011.pdf

Formed in 1979 with ten members, the Durty Dabbers today has over 100 actively participating members who organize, coordinate, assist, and ride in various dual sport and observed trials events.
 

The Durty Dabbers held their First National Dual Sport in 1990 with approximately 100 riders participating. Now in it's 21st year, the annual Dual Sport ride attracts close to 600 riders from all over the country. The event is every year the weekend after Memorial Day (usually the first weekend in June) and will be held this year June 2 &3 2012 in Lock Haven PA.

http://www.durtydabbers.com/?page_id=8

http://www.youtube.com/watch?v=4xjioH5PPiE

Central PA: The place to start

Central Pennsylvania is one of the most scenic places to ride in the country. The windy roads, breathtaking vistas, local establishments, historical sights, foliage, water, mud, rocks, or snow can be enjoyed by anything with handlebars. Whether your wake jumping on your personal watercraft, cruising the two-lane backroads on your motorcycle, climbing over rocks on your ATV, or blitzing whoops on your dirtbike the Keystone state has it for you.