Trek 520 Grando Gravel Bike - 2021, 60cm | The Pro's Closet
RLB Cycleworks - A super-cool 1984 Trek 520 touring bike! 18 speeds. Set up as a retro cyclocross / gravel touring bike with wide all-terrain tires and Suntour "Barcon" handlebar-end shifters. Lightweight
2009 54cm TREK 520 FULLY RIGGED for Gravel/Road Touring For Sale