At motorway end M27, follow A31 dual carridge way. This just contiunes from the end of the motorway.
After 13 miles from motorway end go straight over 3 roundabouts on the fourth roundabout (2 miles from first) turn right

Follow A31 to Dorchester staight on at every junction after 16 miles at Shell Petrol Station roundabout take a right on A31 to Dorchester after 12 miles roundabout signes Weymouth left take left

After 6 miles first roundabout in Weymouth straight on. For Town centre go right. After 1 mile second roundabout, take first exit, at 3rd roundabout take first left for Town Centre or continue straight on for Portland.

For sea front, Greenhill, Bowleaze Cove, Weymouth College and Hospital go straight on.The College is after the roundabout is 0.7 miles on right, the Hospital after 1.1 miles turn right just after zebra. For Bowleze Cove bare left at one way, for town bare right.