it's technically not legal but noone bothers you as long as you respect the hikers and dog walkers...there's a great way to loop mills reservation with eagle rock for about a 15+mile ride that covers some nice terrain...we ride from the bikery in montclair on Valley road on wednesdays a little after six and either do mills, eagle rock, or a combination of the two...the guys from the shop know those trails like the back of their hands...come join us one night
-Mark