Route 25 is a 18-kilometre (11 mi), two-lane, uncontrolled-access, secondary highway in central Prince Edward Island.

Its southern terminus is at Route 2 in Marshfield, and its northern terminus is at Gulf Shore Parkway East in Stanhope by the Sea.

The route begins at its southern terminus and heads north.

It joins with Route 6 in Covehead and turns left later in Stanhope to leave the concurrency.

It then heads northwest through Stanhope by the Sea where the route ends at its northern terminus.