There are miles and miles of paved trails along Lake Dillon. You can park your car at the Dillon City Park on Lake Dillon Drive. There is also a marina where you can rent boats in the summer. The trails are open to walkers, joggers, roller bladers, and bicyclers.
There are several places to access trails as you drive from Dillon toward Breckenridge on the road that crosses the lake dam. The trail in the immediate vicinity of the town was cleared of snow. We only walked a mile or maybe a little more so I can't speak for the paths on the other side of the lake.
The views are awesome. As you can see in the pictures, the amount of sunshine makes a huge difference in color.