Blue Trail is a hiking trail in Wayland, Massachusetts. It is within Barrel and Upper Mill Brook. It is 0.3 miles long and begins at 136 feet altitude. Traveling the entire trail is 0.6 miles with a total elevation gain of 32 feet. The Upper Mill Brook, Upper Mill Brook, and Upper Mill Brook conservations and the Benjamin Pond water can be seen along the trail. The trail ends near the Barrel conservation.