After being a Third Team All American at Wichita State University, Bob was drafted in the fourth round by the Green Bay Packers in 1964. He played on the Green Bay teams that won the NFL Championship in 1965, and won the first two Super Bowls in 1966 and 1967. That Packers team is the only team in NFL history to win three championships in a row.
After joining the Atlanta Falcons in 1968, Long reunited with Lombardi in 1969 with the Washington Redskins. He spent his final season with the Los Angeles Rams in 1970.
Long was the only active player ever to play for both the Green Bay Packers and Washington Redskins under Vince Lombardi and is part of the "Lombardi Legends."
He has been very active in charity events in the state of Wisconsin. He served as President of NFLPA Retirees for Wisconsin. He has raised over $1,500,000 for various charities with the Long Journey to the Super Bowl Raffle. He works tirelessly for the Ray Nitschke Foundation, Special Olympics, Task Force Against Family violence and Alzheimers. He also brought the first Pizza Hut to northern Wisconsin from 1968–1979.