Simply Paths is a mod that adds many paths based on Vanilla and Custom blocks. It is mainly a decorational mod.
Simply Paths currently has 28 blocks and 25 of those are paths. We plan to add multiple types of paths in the future, and if you have any suggestions feel free to say them in the comments.
All paths make you walk faster [excluding Soul Sand which acts the same as the block] and Glowstone Path also lights up an area around it just like the normal block. Grass instead of turning into Grass Path turns into Worn Path [same one upcoming to MC 1.9].
You can obtain the paths by right-clicking on them with whatever tool breaks them normally. If you put a path into the crafting table it'll revert back into the source block.
Vazkii - Path Walkspeed Code and Creative Tab Order Code
LupusX - Worn Path Texture and Idea for Paths
Simply Paths is under the GPLv3 License. This means that you are free to use this in modpacks.