Swift Footed

 
Prerequisite(s): Dex 13+, Base Attack Bonus 2+, Run
 
Benefit: You may take a double move and still make one melee attack (and never more than one, even with other feats like Cleave). This attack is made at a -5 penalty, just as if it were a normal secondary attack. You may not take a five-foot step in addition to this movement, and your movement must end as soon as you make your attack.
 
Source: Net Book of Feats