Can a bike computer be used on the rear wheel? As the weather gets colder and colder, I find myself on a trainer more and more. The only way to gauge my workouts is by time, unless I set up the sensor for my bike computer on my rear wheel.



Will the computer work accurately on the rear wheel? Are there any disadvantages having it on the rear wheel?
Totally fine - its a good idea.  You'll need to move the sensor and fit a second spoke magnet (or move your front wheel one)

Another option would be fit an ant+ or bluetooth sensor and look at virtual ride tools like zwift, but they're not free.

Another option is count your pedal strokes and aim for 90 every minute, but that gets boring.