24 Heures La Tuque
24 Heures La Tuque was a non-stop relay with up to 20 two-person teams that ran from 3 p.m. Saturday to 3 p.m. Sunday. The race was staged in an egg-shaped Lac Louis in Quebec, Canada. The course was a one-third of a mile plus 11 feet that paralleled the shore so crowds of thousands cheered on the professional marathon swimmers day and night.
Some of the greatest marathon swimmers of that era competed in the race.