Benefits: This is a skill feat that scales with your ranks in Tumble. * 0 ranks: You can halve your speed to tumble as part of a run or charge action, following the same rules as tumbling at half speed during a move action. * 4 ranks: All of your movement speeds increase by 10'. * 9 ranks: You can move 10' at the beginning of any standard or full-round action. * 14 ranks: You can make Tumble checks instead of Constitution checks to continue running or avoid nonlethal damage from a forced march. * 19 ranks: During any surprise round, you can make a Tumble check as a swift action to move that many feet.