Tri-- keep the love of cycling, that would be your long-term goal for whatever you do about cycling activity.
'Train' is not the right word for what I do. I just try to go for endurance and stamina with no preset ride times ..enough so that I can do occasionally some long rides with others each season without whimping out completely. It is nice to build in some cycling efficiency for situations where I do have to be somewhere at x time to do something afterwards off-bike/meet someone or to deal with road/highway interchanges where faster reflexes are required. Otherwise I ride solo or with my partner most times.
Sundial, sounds like yet another bike for your growing bike stable.