Once you reach the summit of The Grade, which is only 2.2 miles in length, Zwift will estimate your FTP using the average power used to summit. It took me 13 minutes and one second to crest it.
To check world availability, check out the calendar in Zwift Insider. Distance: 7.6 miles Elevation Gain: 3,399 feet Average Gradient: 8.5 percent It’s also a great place to test your FTP ...