Heart rate zones based on the functional threshold test
Power zones based on the functional threshold power test
Heart rate zones based on your 20 minutes max effort
Speed zones based on your 20 minutes max effort
Speed zones based on a CSS test
Heart rate zones and/or power zones for cycling
Heart rate and/or speed zones for running
Needed gear and/or location
For Cycling a heart rate monitor, power meter and (possibly) indoor trainer
For running a heart rate monitor, GPS and (optional) 400 meter track
For swimming a 25 or 50 meter pool
For swimming a 25 or 50 meter pool