You'd better

As much as you dislike the thought of running without even a hope of getting away, the consequences of disobeying seem likely to be even worse.

With that in mind, you get your feet firmly beneath you, take a quick peek behind you; the orc is lazily stroking her monstrous green fuckrod in one hand, while grinning at you hungrily.

There seems no doubt in her mind that you'll do as she says, and she's clearly looking forwards to the chase.

You take off running, expecting the orc to close the distance in a flash and bury herself deep in your freshly pounded hole. However, seconds pass without any sign of pursuit, and before you know it, you're quite a ways down the road.

Leash flapping behind you, you consider if you should just keep going along the road, hopefully leading your Master closer to your destination - whatever that is - or try to escape her altogether by ducking off the road and hiding somewhere in the woods.