I imagine such a thing doesn't exist because there really isn't a good way (or allowable way) to walk between many resorts and/or parks. For instance, you cannot walk from AKL to AK; there aren't paths/sidewalks to do so and pedestrians are not allowed on roadways.
The exceptions I can think of are: walking from CR to MK, from Poly/GF to TTC, from EP loop resorts to each other/EP/DHS, from POR to POFQ, from OKW to SSR, from SSR to DTD. To see those paths, Google any one of them and "jogging map" - where walking/running is permitted, jogging maps exist.