Im looking to do a marathon time trial next week, and a rail trail will most likely be the best place for my friend to ride a bike along with me. The Cape Cod Rail Trail seems flat and fast but on some strava posts I have seen some people talk about big hills in Wellfleet. Has anyone run or biked the complete 25 mile CC Rail Trail and if so what is it like? I don't mind some smaller hills but someone with an honest review would be helpful in planning without a day trip to the Cape. Thanks in advance!