Route 690 is a 45.6-kilometre (28.3 mi) long mostly north-south secondary highway in the southwestern portion of New Brunswick, Canada. Most of the route is in Canning Parish. The route starts at Route 10 between Minto and Newcastle Bridge, where it travels southeast through a mostly forested area to Newcastle Creek on the east bank of Grand Lake. From here, the road travels southwest past Evans Road and Flowers Cove where it turns south through Sypher Cove.