While you are waiting for more input I'll mention that, for flat paths, you may indeed be limited to just the ride to the beach as the Nat. Seashore paths in that area are hilly as well as not being sheltered from the sun so quite a workout.
Hopefully Neslaw will see your message as he is the expert on this matter.
There is a bike path on ptown which is easy but can be windy. You can bike 6A to truro. It is a little hilly but far from difficult. Half the trip will be easy depending on winds. The ride has great scenery and passes the cottage communities. The road does not have bike lanes but is relatively lightly traveled and people expect to see bikes. The west end of 6a from ptown where it merges with 6 is by truro vineyards. Some good wives and very good craft rum
Thank you for the advice! What about the Head of the Meadow trail?
Do carry maps with you.
My husband biked every morning from Truro last year for a week. He rode both north and south but enjoyed the early morning rides on the Provinceland trail the best.
I can't tell if you are planning on riding the bikes back to Truro but there are back roads from Cornhill Beach through Truro Center to Wellfleet Center that a lot of cyclists use.
There was last year (and I assume this year but check) a bike shuttle that ran between Provincetown and the rail trail in Wellfleet with stops along the way. http://www.capecodrta.org/bike-shuttle.htm
I never knew about that shuttle. Great idea and hope it is running again this year. I was thinking the OP is staying in Provincetown. Same info still applies in either direction but agree that the ride into Wellfleet is nice as well. Only thing I would say is that it is thru the marshes and woods and is pretty hilly. The reward is getting to wellfleet but isn't as "scenic" as the water views along 6A. Also, there are bike signs but you have to be careful to watch which direction they are pointing. When I did this over the 4th, it was a little confusing.
Thanks. I have read descriptions of the Provincelands rides as quite difficult, and one of our party is in her 70s, so I am wary! (The ride to Herring Beach is considered Provincelands, right?)
Do you want a bike ride only or do you want to ride to a beach? There are bike shops near the rail trail in Wellfleet and Eastham. The rail trail is flat and an easy ride. You pass some restaurants along the way, and Arnold's in Eastham has restrooms and water for those on the rail trail. You can also get an ice cream as a reward for your ride!