Can't answer your specific question, but here is another idea.

Use Waze/Google maps --> just make sure you have speedometer turned on. That will give you another measure of speed. I've found both to be accurate.

Check out Poor Farm park. They don't have many defined/named trails, but plenty of paths to walk to piece together a good hike.

Small stream cuts through the outer part of the park. Leads to a wet Labrador every time.

All Trails has good options.

Mother-in-law has been very happy with Dr Ellenbogen. Complex case that he has expertly managed.