What are the 4 most common lengths of long distance races?

Question 1 options:

1 mile, 2 mile, 3 mile, 4 mile


1 kilometer 2 kilometer, 3 kilometer, 4 kilometer


5 mile, 10 mile, 13 kilometers, 26 kilometers


5 kilometers, 10 kilometers, 13.1 miles, 26.2 miles