Best hikes in Billerica State Forest

Ambleway maps 2 hikes in Billerica State Forest, from a 1.3-mile walk to a 2.0-mile day out. The biggest climb is Gilson Hill–Gilson Hill Loop, 3 sights, gaining 170 ft, and the network tops out at 312 ft.

• Gilson Hill–Gilson Hill Loop, 3 sights 1.3 mi · ▲ 170 ft
• Fitness Trail (red)–Flow Rock Flow, 3 sights 2 mi · ▲ 27 ft