What is a Furlong and please explain the distances.

1 Furlong = 1/8th mile (660 feet, 220 yards, or 201.17 meters)

Workouts Lengths
2 Furlongs = 1/4 mile
4 Furlongs = 1/2 mile
6 Furlongs = 3/4mile
8 Furlongs = 1 mile

Race Lengths
5 Furlongs = 5/8 mile
5.5 Furlongs = 11/16 mile
6 Furlongs = 3/4 mile
6.5 Furlongs = 13/16 mile
7 Furlongs = 7/8 mile
7.5 Furlongs = 15/16 mile
8 Furlongs = 1 mile
8.5 Furlongs = 1 1/16 miles
9 Furlongs = 1 1/8 miles
9.5 Furlongs = 1 3/16 miles
10 Furlongs = 1 1/4 miles
10.5 Furlongs = 1 5/16 miles
11 Furlongs = 1 3/8 miles
11.5 Furlongs = 1 7/16 miles
12 Furlongs = 1 1/2 miles