It’s about 230 miles as the crow flies from Dorena Landing MO to The Rock…
If we built a 10 mile tall tower here in Georgia, and the air was perfectly clear, and we had a telescope, we’d be able to see the start on the horizon.
If you wanted to be able to see the finish from the start, that tower would be the last 10 miles of the route. This would add 10 miles to the course, and the vertical gain along the route would increase from 12,000′ to 62,000′