I've worked with Tammy Whyte from TW Training and Wellness. She has a variety of training packages and I did the Connect and Run group package a while back. It was a fun motivator, and you had access to her expertise as well as a community of runners also involved with her programs. She's based in Chicago now, but trains people in various locations and could probably do assessments virtually if she does not have DC-based IRL trainings planned.

https://www.twtrainingwellness.com/connect-and-run