Because Your Gray Matters, join the Mary E. Smith Brian Tumor Foundation in our Annual 5K Run/Walk. Register as a team or individual and show your commitment to winning the fight against brain tumors. This walking trail is asphalt with a starting elevation of 675 ft, maximum elevation of 678.02 ft. total ascent/gain of 13.31 ft. Multiple laps complete the 5K run/walk. Each lap is 1.37 miles.