This 320-mile, 32-day adventure is intended to help change the world for 49 million families facing disabilities in the United States.
Kimble has Down syndrome, but said it doesn't have him.
He had walked 98 miles to the Capitol steps in Frankfort, Kentucky in 2013.
Dream Walk 2 started at Abe Lincoln's birth place in Hodgenville, Kentucky, and will end at his resting place in Springfield, Illinois.
Friday, he walked through Hardin County, Kentucky.
The theme for the walk is "Honoring Our Heroes."
Kimble wants everyone to participate in making his dream come true by providing a place where everyone can "Honor Our Heroes" online.
To learn how you can honor your very own hero, go to www.joshuasfriends.org/honor-our-heroes.com.