Multiple Buildings: Distance from Showers to Building Entrance

We are using the Application Guide for Multiple Buildings (AGMB) to certify 4 buildings (Bldgs 1, 2, 3, & 4) as a Group. The showers and changing rooms are located in a fitness center within Building 3. My question is about where to start/stop measuring the walking distance. The walking distance between the entrance of Building 1 and the entrance of Building 3 is less than 200 yards. The walking distance between the entrance of Building 1 and the actual showers and changing rooms in Building 3 is just over 200 yards. Buildings 2 and 4 are within 200 yards of the showers and changing rooms. Based on previous LEEDUser posts, NCv2.2 accepted documentation, CIRs, and the AGMB, I think that it is acceptable to measure entrance to entrance, but haven’t found this exact language anywhere. Has anyone measured “entrance to entrance” for a similar LEEDv3 project and achieved the credit? Thank you!