Who are famous runners in the 2008 Olympics?

Usain Bolt is the most famous track runner. He broke 100m, 200m and the 4x100m records. Usain Bolt is the most famous track runner. He broke 100m, 200m and the 4x100m records. Usain Bolt is the most famous track runner. He broke 100m, 200m and the 4x100m records. Usain Bolt is the most famous track runner. He broke 100m, 200m and the 4x100m records. Usain Bolt is the most famous track runner. He broke 100m, 200m and the 4x100m records.