What's an OK / competitive time for the kilometer for a 50 year old male?
A quick search showed times around 1:15, but I don't have enough info to know how competitive that is.
In my limited experience, a 1:15 is a very respectable time at a sea-level track, and is probably a really good time for a 50 year old, if not super-quick. I suck at the kilo, and did a 1:15 at 6300ft. I think the lowest time of the day was a 1:03, so I do have room to improve, but I'm a Pursuit guy.