Mt Field National Park is just over one hour's drive from Hobart via New Norfolk. After New Norfolk you can follow the road on either side of the Derwent River (the A10 or B62) until you reach Westerway. From there it is a short drive to the small township of National Park and the entrance to Mt Field National Park.
The Lake Dobson carpark is up a further 16km of winding gravel road.