The Franklin and Bellingham Rail Trail Committee will lead a guided bike tour of the Southern New England Trunkline Trail on Saturday from 8:30 a.m. to noon. The tour will begin at the Grove Street trailhead in Franklin and proceed 7½ miles west to Blackstone to view the work taking place on the trail. In Blackstone, participants will have a chance to examine the bridge rehabilitation project taking place. The tour is free, but registration is requested. To sign up, visit www.franklinbellinghamrailtrail.org.