Running and Difficult Terrain

Can you use the run action through difficult terrain?

This is one of those question that seems difficult because people read all kinds of rules into the action.

The run entry doesn’t say you can’t run through difficult terrain—so this automatically means you can. It’s also important to realize that just because the run action is called “run” doesn’t mean you’re actually running. That’s just the name the designers gave the action; there are no restrictions to where you can use run: you can “run” while climbing, “run” while swimming, or “run” up stairs.

Run, in this instance, becomes a misnomer.

For more discussion on this topic, visit the thread I made on EN World.