The Great Balloon Rush-Hour Race is a Hare & Hound Race.
One balloon took off first and is the Hare balloon (U.S. Bank Balloon piloted by Scott McClinton).
The other balloons are called the Hounds, and they launched at a predetermined time after the hare (usually 5 to 10 minutes after). The Hare lands at a suitable site and lays out a large fabric X, usually about 50 feet in diameter.
The Hound balloons attempt to drop their markers as close to the center of the X as possible. The closest marker achieves the highest score.
The balloons started landing in Shawnee Park in Louisville around 8 a.m.
Just seven balloons flew in the inaugural race from Iroquois Park in 1973.