36 miles, very steep hills around Vernon NJ + Warwick NY - linking climbs while minimizing use of high-traffic rt 94, which requires a short section on dirt. More info see www.roberts-1.com/b/x/nj. 5500-6000 vertical feet of climbing, with much at steepness over 12% grade. Requires excellent downhill control + good road conditions. Last checked by us in 2010.by NJwandr