What is a negative split In a Marathon?

Answer 1

A negative split in a marathon is where you run the first half or maybe even the first 10 miles of the race slower than your goal pace. Then the last half of your marathon, you pick up the pace, running faster than your goal pace to make up for the lost time from running slower in the first half of the race. This is a good technique to running a marathon because since it is such a long distance you conserve a lot of energy in the first half, and save it for the last part of the race. Running slower then faster than your goal pace will still get you your goal time if done correctly, you are just running in a different way.