For us PC plebs, we don't have the pleasure of boosting using two controllers.
Luckily however, custom games browser is now a thing. Find any infection game type, chances are high the zombies have sprint, or hell, even a game of Duck Hunt where the zombie has a sniper and the humans sprint is good.
Just find an infection game type being hosted, join, get the headcase badges, leave, easy peasy.
Perhaps try staying until the game is over just for good sportsmanship reasons, but hey, I'm not your boss.