I'm one of the slower 40km riders that try to keep left as much as possible. I try and ride as much as possible of the trail, but when my legs fails me I know to get of the track. What bugs me as a slower rider is fellow slow riders stoping in the middle of the track and not moving out of the way. The rest of us behind them is then also forced to stop as the right hand track is occupied by the faster riders. Stil I love to get out in nature and puch my own limits on the mountain bike.