I think biking has become our "exercise thing" this summer. We've made a 10 km route around that takes us just over half an hour to ride. I didn't realize how up and down Walkerton was till I started riding the bike. Love the downhills but unfortunately there's always a compensating uphill. Yesterday, we decided to venture a little farther and did a 20km ride. Thinking it was a fairly flat route, I suggested that we ride the rail trail to County Road 5 and ride on it north then turn onto an other road till we hit County Road 3 at Dunkeld. It's been a while since we driven that route but it certainly wasn't flat. Ed recorded a coasting speed of 49 km/hour going down one of the hills. He managed to ride the entire route while I ended up walking up the steepest hill.