Not quite New England, but the neighboring land just west of us has some great gravel riding. John Ferguson's blog,
Riding the Catskills, documents his explorations of gravel roads and hill climbs in the Catskills, and provides links to his routes of all different lengths. It's a great read, and a fantastic resource for anyone in the NYC or western New England looking for vetted dirt (and/or climbing) loops. I have a vacation place in the Catskills, a little farther afield than John, and started exploring the dirt roads a couple of years ago. John invited me to guest post, so I documented a wonderful D2R2-like ride that I did last week. I couldn't resist sharing it, so I'm
linking to it here. If anyone reading this list makes it out that way, they owe it to themselves to check out some of Johns or my routes.
Anton Tutter
Somerville, MA