I`m 51 and will be 53, when I do Man v Lakes, hence why I`m not rushing my training schedule - putting another mile on every month.
I should be doing interval training, but it`s mind numbingly boring, hence why I`m doing fartlek, as it just becomes part of your regular run - leg it up every hill lol
I looked at doing a veterans triathlon, but I hate swimming.
If you want to do a really fun one that involves swimming, there`s one called - Man v Coast.
It`s a 20 miler, around the coast of Cornwall - St Michaels Mount - Lands End, than involves Coasteering ( jumping off cliffs into the sea ), which looks great fun, plus it`s not a mind bender at 20 miles. If i get around the Man v Lakes course, that may be my next one