Darlene Merola and I are planning to go to the Seacoast Century in NH this year. (we went last year and I went the year before that) I know many SBRA members go and it's a lot of fun. It's a well run event also. Here is some info and the registration link. There are a ton of hotels in the area. We stayed at the Ashworth which is a little pricey (and charges extra for parking) but it's in a good location (walk to stores and restaurants).
Our 46th annual Seacoast Century on September 20-22nd 2019 offers the same great routes as last year with 25, 50, 65 and 100 mile options on Saturday and Sunday. Early registration is $55 and available here: www.bikereg.com/seacoast-century (our first increase in two years - insurance and operating costs keep going up!). Registration includes a Century t-shirt, rest stop goodies, technical support for riders, and soup & rolls at the ride's end. Ride proceeds support bicycle safety and advocacy in New Hampshire.