Lloyd was captain of his high school track and cross country teams and was the one mile champion his senior year. He received a full track/cross country scholarship to Penn State. Was Penn State's top sprinter for three years, running the 220 in 21.3 and the 880 in 1:52.

Lloyd won numerous 5 and 10-mile races as a club runner from 1958-1973. Joined North Medford Club. Was the #2 on their National Champion Cross Country team in 1973. He set a National age-group 50+ one-hour record (10 miles 387 yards) in 1983.

Slocum set a World age-group record at age 50 running the indoor 2-mile in a time of 10:09 to win the National Championship. In 1987, Slocum was National Corporate Champion in both 5K and 10K. At age 69, Slocum won the National 5K outdoor championship (in the 65 - 69 category) by 200 meters in a time of 19:12. He set a World age-group record in 2003 by running a 12:09 in the 2 mile run to win the Maine Championship.

In 2001, Lloyd won his division of the Beach to Beacon race by 8 minutes. In March 2003, he won the National 3K Championship for 70+ with a new National Record time of 11:52. In this same meet, Slocum also defeated the legendary Earl Fee for the one mile National Championship in a time of 5:36.

Lloyd Slocum was elected to the New England 65+ Runner's Hall of Fame in 2003. Lloyd has also had a distinguished coaching career. He was the assistant cross-country coach at Penn State from 1956-58 and head cross country coach at the University of Southern Maine for two years (1975-1977).

Finally, Slocum has been a champion dog sled racer for many years. He has won numerous races throughout New England in different age categories. In 1972, Slocum won the World Championship in unlimited class and also won all eight races that year, an accomplishment never before achieved.

Lloyd and wife Susan live in Hollis, Maine. They have four children, Phillip, Linda Barker, Jennifer Thayer and Nathan. Lloyd is still actively running and continues to enter and win road races in his age group.

Lloyd is married to Susan and has four children, Nathan, Phillip, Jennifer Thayer and Linda Barker.