In a morning's tour from Morlaix, about 160 km (100 miles) to the west of Dinard, you can take in three of the most important ones on a route signposted as the Circuit des Enclos Paroissiaux. 
Dinard is about 100 miles to the east of Morlaix.
None of the important ones can be taken in on the Circuit des Enclos Paroissiaux.