Ride With GPS is reasonably accurate with the estimates. For example, if it’s telling me a route will take me 2 hours, I aim for 80% of FTP as average effort, a Power Zone 3 (tempo) effort. If it is 5 hours, I aim for 50% of FTP as my average, top of zone 1.
One ride I wanted to do this summer that I didn’t get to was Mt. Whiteface. Whiteface climb is approximately 3500 ft over 10 miles. I wanted to do it just to prove that I could. Turns out the Road to Sky route in Zwift is just what I needed to do it virtually.
Necessity is the mother of invention, they say. I wasn’t going to give up Gran Fondo-style riding outdoors, so I adapted. I found terrific local routes, bonded with local friends, and explored the area where I live. I learned a lot about myself and my neighborhood in the process.