Route 30 runs roughly parallel to the Massachusetts Turnpike and Route 9, but unlike those two larger highways, takes a more meandering path from town to town.

The route travels northeast, passing the Tufts University Cummings School of Veterinary Medicine.

Route 30 continues to the northeast and interchanges with the Massachusetts Turnpike.

Route 30 continues northeast, crossing over the Mass.

Route 30 continues into Weston, where it enters a large interchange with the Mass.