An online trail guide to the blue blazed Naugatuck Trail, in Naguatuck State Forest near New Haven, was recently created:
The FKT route includes the out & back to Beacon Cap, and is about 5.8 miles. For the round trip FKT you only have to do Beacon Cap once.
If they want to claim it, Mary Louise and Jeff got the one way record too, when they did their OAB. :)