In Flash Rebirth #3- supes keeps up just fine until Barry goes all out. And only because he starts entering the speed force. Flashes very first comment in the next panel is ," A band of muscle in my thigh tightens up", just to illustrate his extra effort.
In The Flash #209- All we see is superman keeping up just fine even though Wally is trying to shake him off as he locates Linda.
Point #1- Wally says , "In raw speed superman and I used to be evenly matched. Id say he might have been a tad faster. " (Before he learnt to better tap into speed force)
Point #2- Wally contimplates steeling his kinetic energy but doesnt want to risk the collateral damage. (proof he wants him off his back)
Point #3- Flash says he figures he'll loose supes through the Rockies. Then he says ,"I figure wrong", as he cant.
Point#4- Superman tries to slow him down with small beam of H.V. wich Flash outspeeds saying ,"I'm faster than heat vision."(but obviously not fast enough to blow supes away, in fact supes immediatly catches him but Wally vibrates out of grip.)
Point#5- Only with the apartment building in sight and superman about to grab him again does Flash say,"the thoughts of linda give me my second wind,no one can touch me with her help" and gets inside an insatant before supes.
Just to show the effort needed to be faster [/B][/QUOTE]
And now Time Masters #5 - Professor Zoom (reverse flash)speed blitzes Hal, Booster and Rip Hunter but is unable to do it to supes, in fact gets cloths lined.
Then says,"well done superman, your speed rivals my own"