CLOSE UP THE GROUP A number-one annoyance. Maintain some distance from the riders around you, but too much is as bad (and more common) than too little. A two-second rule—neither faster or slower—is probably right for most riding. In the dirt, riders string out on 30-second intervals to let the dust settle. When you come to a fork in the trail, wait until you can let the rider behind you know which trail to ride down.