697 miles, 13 full cycling days plus the last short morning to the airport to pick up a rental car. As you can see, aside from Day 1 my mileages were fairly moderate. That comes to an average of 54 miles/day not counting the last 25.
My route in NW CT crosses the ACA route at Riverton or you can just stay on it in Poughkeepsie. If you have the ACA map and you want to play around with it, compare my mileage north from there with the ACA mileage east and north to the Portland area. If you take my route north connecting to the Northern Tier, add about 60 miles for a direct (non ACA) cycling route to Portland from Conway NH.
Conway to Portland- http://goo.gl/FJbwGF
Orford NH- Pastures CG 85
Ascutney VT- Wilgus State Park 42
Putney VT -KOA 38
Westhampton MA- KOA 58
Bantam Lake CT- White Memorial CG (2 nights) 63
Highland NY- Super 8 55
Goddefroy NY- KOA 48
Delaware Water Gap NJ- Worthington SF 45
Quakertown PA- Red Barn CG 56
Geigertown PA- French Creek SP 42
Marietta PA- Blue Note Motel 65
Westminster MD- Day's Inn 50
Swain's Lock MD- C&O bike camp 50
Reagan Airport 25
I never use warm showers. I don't like to reserve ahead nor do I like to be a polite house guest after a day of travel. Lots of folks enjoy the service though.