GPS
For the cyclist desiring the most accurate measure of distance and speed, GPS computers offer a great solution. Some models also allow navigation using integrated maps and facilitate following a pre-planned route.
Bike Computers
Cyclocomputers are a great way to track your distance and speed so you can gauge your workout. Some models also offer an assessment of your cadence (pedaling RPM) and heart rate. Prices vary according to the features and whether the computer operates using wires or wirelessly.
Heart Rate Monitors
Heart rate is an excellent way to assess the intensity of your workout. Just about every heart rate monitor includes a wireless chest strap and a wrist watch.