Photo by TRAVIS DAVID | Shakamak's Rayden Rehmel (right) heads towards the finish line during the Clay City Invite on Tuesday. Rehmel placed fourth while running a personal-best time.

BY TRAVIS DAVID [email protected]   CLAY CITY — Rayden Rehmel had a little extra motivation on Tuesday.    Earlier in the day, the Shakamak senior picked up his first official college offer letter (Muskingum College in Ohio) before heading off to race in the Clay City Invitational.   During Tuesday’s…