The Bull Run Run is a 50 mile run over trails that parallel the Bull Run and the Occoquan River. The course traverses forested, rolling terrain. There are about 150 yards of asphalt. The remainder is single track dirt. There are small stream crossings. Most of the course drains well, but parts can be muddy in wet weather. The event is held in the height of Virginia’s spring beauty. While we have had warm and cold weather, brutally hot, humid weather is unlikely.