This data pack is only compatible with Block Runner versions 1.21+. In older versions of Block Runner there was a JSON file you could edit directly (more info on how that's done on the mod's page). Starting with 1.21 that file was removed.
I've added the blocks from Macaw's Paths and Pavings to the block data of Block Runner, increasing how fast you move when on them.
The speed for all the blocks is set to the default "quick" speed that comes with Block Runner, which is 35% faster than vanilla.
If you would like to change the speed of all blocks, or any individual blocks, this can be done by editting block_speeds.json within this data pack.
This data pack requires you to have the mods installed of course: