The trait Leaf-walker will increase your movement speed while sneaking by 20%.
The Burglar Tools Minor Legacy Sneak Movement Speed will increase your movement speed while sneaking by up to 10%.
Sneaking is a very useful ability for Burglars. You don't need to clear a full camp with Orcs to get to your destination, just be careful and sneak around. Attacking from stealth increases your damage, especially if you are traited in The Quiet Knife Trait Set.
While sneaking or in stealth, the following skills become usable: