yes its way to far. i only did it because im an idiot and dont know what im doing (complete sarcasm)
no its not to far. common ground lengths dont matter. is a run from front to back for a ground too long? no because it links 2 grounds together. in this case the alt is mounted to the block(or off a bracket then the block) so its a common ground. it would be differant if you did a 4 ft ground or so to some sheet metal or the body rather than the chasis