In ten seasons Lumsden played in 141 regular season games and carried the ball 767 times for 3755 yards and with 36 touchdowns. He also had 180 receptions for 1729 yards and 15 more touchdowns. Several times during his career he was called on to fill in as a placekicker and punter.
Lumsden worked briefly in cycling when he was appointed COO of the Hamilton, Ontario, UCI Road World Championships in 2003. This was only the fourth time the road cycling world championships had taken place outside Europe.
In 2015, he and his daughter, Kristin Lumsden, a makeup artist/skincare specialist living and working in Toronto, competed in the third season of The Amazing Race Canada. In legs 1-6, they placed in 10th, 6th, 1st, 6th, 7th, and 6th. In leg 7, they placed in 7th and were eliminated from the race.