The runner is prob the fastest. He is pretty much the fastest being in Marvel, and his speed feats are better than any I have seen not counting teleporting but he goes so fast, he even mistakes his speed as teleporting at times.
Superman, the Flash, and Green Lantern can all travel at multiple times the speed of light. The Flash has always been maintained as even faster than Superman, as demonstrated in Flash: Rebirth. Even if Hal Jordan can traverse between galaxies more effectively than Barry Allen, he doesn't have hyper-fast senses and reflexes like Flash does.