Joined: Jun 2013
Posts: 5,973
Likes: 1,397
From: SW Fl.
Bikes: 1999 DAHON Mariner, Day6 Semi Recumbent "FIREBALL", 1981 Custom Touring Paramount, 1983 Road Paramount, 2013 Giant Propel Advanced SL3, 2018 Specialized Red Roubaix Expert mech., 2002 Magna 7sp hybrid, 1976 Bassett Racing 45sp Cruiser
I am 64 and an Ironman finisher. I can swim, I can cycle, but due to bad knees I can only jog a bit but can speed walk at a 10mpm pace.
My bicycling, no racing, has allowed me to speed walk at that pace because my HR while walking approaches that of faster riding, the higher cadence while bicycling correlates to my rapid stride achieved and the endurance from long rides provides benefits for marathon distances.