Rock Creek Park, MD. From Viers Mill Rd., to Avery Rd., and back. I was out with Samantha so that's why this is so slow. I chose the route since it is pretty flat, but there were some rises. A bit over 1/4 mile into it, a runner passed us while we were going up ramp to cross Viers Mill Rd. Samantha was slow and had to walk up several hills; she was slower and fearful of going down them. One time I even held on to her handlebars going down--that worked for a while before she panicked and slammed the brakes. We almost crashed. We did have a nice ride. The tree leaves are all still not out. Flowering trees were in full bloom, and the carpets of floodplain flowers were blooming too.