Complex sentence: The trail is widely varied in difficulty, terrain, and elevation and has intense downhill sections and steep climbs, but several gently sloping road sections help to balance the trail and make it accessible to advanced and beginning mountain bikers alike.
Split into simpler sentences: The trail is widely varied in difficulty, terrain, and elevation. It has intense downhill sections and steep climbs, but several gently sloping road sections help to balance the trail and make it accessible to advanced and beginning mountain bikers alike.