Riverside Trail The Riverside Trail is a one-mile, one-way trail connecting the Oxford Hills High School and Middle School, that follows the Little Androscoggin River. This easy trail is suitable for all ages. The trail is an out-and-back route withwheelchair-accessible walking, thoughsome sections in the middle may present barriers for wheelchair users. Most of the trail is about six feet wide with a surface of crushed stone, descending at a slight grade from the high school parking lot, then soon leveling out until it reaches a wooden boardwalk. The trail is used year round for a variety of outdoor activities.