Originally Posted by final4illini

I currently use a typical bike computer with the sensor on the fork and the magnet on the spoke while also using a GPS app on my phone. I've ridden 25,000 miles in 4 years and all miles were logged. The bike computer comes in handy to give me distance when I ride my rollers inside. I'm thinking about upgrading to a GPS bike computer that is ANT+ and Bluetooth capable. My problem is this: I will be riding my rollers and the GPS unit will be worthless. I'm thinking an ANT+ speed sensor added on my bike will display speed and distance? I want the distance to show up as well as the speed because I log all miles. However, looking at all the info on speed/cadence sensors one is to believe they don't track distance? I even saw a YouTube video of someone setting it up and speed and cadence were displaying, but not distance! Do speed/cadence sensors display distance too? Thanks!