Disciple of the Land abilities.
If there is a harvestable node within your search area, you gain a temporary movement boost.
Get this ability for Rank 1 nodes fairly early on (Rank 4? DoL), and can be used for speed burst even if you don't go to the node.
Actually it's sort of the other way around, you get the speed boost if the node is FAR enough from you. Seems to be ~200 yalms. I use the rank 1 DoL ability to scan the distance to the nearest node, and only pop the speed boosting scan if it's outside 200 yalms. The basic scan is 15 second cooldown, the advanced scan is 1 minute (and the speed lasts 30 seconds), so I don't want to blow the advanced scan unless I know I'll get the speed.
A few other things about it:
There are different grades of nodes and scanning ability. Different zones/areas have different grades. Example: If you go south of Drybone, a grade 2 zone, you will get into an area with higher level mobs and grade 5 nodes, even though you didn't zone (those long tunnels between areas? Those are fake zone walls. Notice people disappear in front of you and then reappear? Because they changed zones and then you did. That's also what gray names mean: Either you or them hasn't finished zoning in). If you are in an area with higher level nodes than your scan, you won't get the speed boost.
If you are in the correct Grade area, and there are no nodes within 400 yalms (thats specifically what the message says, "Within 400 yalms", as opposed to "None in this area" for underleveled scan), you still get the speed boost.
Btw, the shoes give a 25% run speed boost... for about 30 minutes a day. And you can't pause the timer by taking them off. Once you trigger the run speed boost, you will not be able to get the speed boost anymore after ~30 minutes. Edited, Oct 8th 2010 5:27pm by Ilmoran