half of a 71-mile moderately hilly loop around the Raritan River, both its South + North branches -- the most interesting + pretty loop this long I know in New Jersey on quieter roads without seriously steep hills. Lots of riding alongside rivers. Farmland open fields, horses + other animals. Dirt roads, quiet woods, interesting houses. Mostly on quieter roads. For the other half of this Raritan River Circle, search on Bikely.com for [njwnbrr]. For more info + connections with other routes, see www.roberts-1.com/b/x/nj - routeID [njwsbrr]. For alternate roads + notes + warnings (or for detailed turn-by-turn directions) click on Show, then select Cue Sheet. This section has about 4.3 miles on dirt-gravel roads, and 1800 vertical feet of climbing but almost all at steepness less than 6% grade. This half roughly follows the South Branch of the Raritan River. Starts near Chester, then thru Califon, High Bridge, Clinton, near Flemington, Neshanic, and finishing near Branchburg + Somerville. This route not checked by me since 2011. by NJwandr