You could try looking here: https://rantingsoccerdad.com/guide-to-youth-soccer/youth-soccer-area-guide-the-dmv-washington-d-c-plus-suburbs-and-exurbs/

Based out of Capital Hill: https://capitalfc.org/

Am I looking for a unicorn? Are there any travel teams for young ones (U8 and U10) that don't involve the slog across Rock Creek Park or a bridge to Maryland or Virginia? How do people make these 430pm practices happen with two working parents for other leagues?