Getting into walking, running, or riding for fitness? Have a smartphone? We share some paths to connect the two, turning the gear you already own into a GPS-enabled recording device for automatically tracking your efforts and plugging into online communities for encouragement. We also delve into the world of ANT+ wireless sensors, which (with the right gear) allow your phone to track additional data such as run/ride cadence and heart rate. Finally, we air and respond to some awesome listener mail.