- Riverside trails are widely appreciated venues for exercise, birding, fishing, family outings, and more. A handful of organizations have been working hard to create a connected trail network along the Malden River. This Trails and Paths map uses information gathered from the Metropolitan Area Planning Council (MAPC). It is thought to be the most comprehensive listing of trails (and plans for trails) available. Use this map to plan your own outing along the banks of the Malden River!