Quote Originally Posted by MultitudeMan View Post
Are you in cold terrain in your campaign? SRD has Frostfell Terrain Mastery for a 10-foot land speed boost as a Rogue special ability, so you'd have to wait until Rogue 10 for it, but it's an option.
If wait for 10th-level Special Ability - then it's possible to just take the Bonus Feat: Improved Speed