Forest park in Noblesville is another of my standard walking places. It connects to several trails. You can go to Potters Bridge, walk downtown, or walk out to the west toward Hague Road. All paved, smooth, flat, and easy. Today I parked at the swimming pool and walked downtown and back.
You will cross a wooden bridge over the White River. It can be slippery when wet. There is a boardwalk along the river for a ways, and access to downtown a couple of spots. I like to go around the courthouse square if it is a weekend morning.
This route and all of the ones it connects to are well used. This is a really pleasant area with a lot of mature trees and is just a fun place to walk.