Great Meadows National Wildlife Refuge Sudbury Unit:  

To reach the refuge parking lot and Complex Headquarters at Weir Hill, follow Route 27 (1.7 miles) from Wayland and turn right onto Water Row Road. Follow Water Row Road (1.2 Miles) until it ends and turn right onto Lincoln Road. Travel one half mile turn left onto Weir Hill Road. The driveway is on the right near the end of the dead-end street.  

To reach the refuge parking lot and Complex Headquarters at Weir Hill, follow Route 27 from Hudson and turn left onto Water Row Road. Follow Water Row Road (1.2 Miles) until it ends and turn right onto Lincoln Road. Travel one half mile turn left onto Weir Hill Road. The driveway is on the right near the end of the dead-end street. 

Great Meadows Concord Unit:  

Travel to this area by following Route 62 east from Concord Center toward Bedford. After about one mile, turn left onto Monsen Road. Continue on Monsen Road until you see the refuge entrance on your left. 

Travel to this area by following Route 62 west from Bedford Center toward Concord. Turn right onto Monsen Road. Continue on Monsen Road until you see the refuge entrance on your left.