Now that I've mapped some bicycle tours around Concord as shown here, today I combined and traversed the suggested routes. Two hours, two flattened turtles, one flattened skunk, one eighteen-wheeler, and many clumsy landscape trucks later, here's the stats on this combined loop:
I prefer to strap the Garmin Forerunner to my Giant Cypress DX handlebar rather than my arm because it makes viewing much easier. Seeing my current speed and distance provides constant motivation. The velcro strap fits snugly around the handlebar when wrapped over the headlamp mount.