Type: DILD.
Lucidity: 1 2 3 4 5 6 7 8 9 10
Vividness: 1 2 3 4 5 6 7 8 9 10
It took long enough, but I finally managed to complete my goal to run real fast without destabilizing the dream.
It started off with me being in a small shack. This building was tiny, probably only five by five feet, and made from strips of wood tiled vertically. There was practically no room to move around in because there were old desks and chairs shoved against the walls. I exited rather quickly to see the outside of the shack. The roof was ready to collapse and looked like it was made from really decayed metal. It sort of looked like the following picture, minus the snow and trees.
The shack was on the side of a beautiful light gravel road, lodged somewhere in the mountains with many trees, like the picture below.

However, the trees were curving over the road and blotting out most of the sky. The scenery still looked very pretty though. I spent some time looking around, and even went to one tree right next to the shack to look at an ant... But I gained lucidity, so I stopped wasting my time looking at bugs. I remembered my dream goal almost immediately. "I should try running again," I said out loud. I'd already failed once, so I was itching to complete this goal. "There's a good pathway... this might help me."
I broke into a light sprint and the trees began to tremble slightly; a few small leaves were falling off them. I leaned forward more and imagined myself rocketing forward. It worked, and I was now going very, very fast. To be safe, I didn't even consider the fact that the dream could destabilize, even though the imagery around me was becoming stretched like taffy. I stopped, closed my eyes for a second, and opened them. I was in the shack again without lucidity.