Startup Idea : walking app

I used to have long walks in my home town but when I got to uni beside from the main roads I didn't know where do local people go when taking a walk, the parks were small and most of the times google didn't show me roads that I could take on foot, so it took me 5 years to figure out all the long and hidden paths that I wish I knew sooner.so my idea is app whit users who can record the places they have been to (pictures, maps, etc.) even how long it took and how difficult it was, can you take pets, can you go whit a bike, and so on...it can also be for web use, I have seen similar apps and websites but none for like in town that doesn't require you to travel far whit bus or car