Mare lines with staying power
I am hoping this forum can help point me in the right direction. I am interested in researching with the intent of selecting a registered TB mare for breeding, whose lines are very well proven over longer turf distances and/or steeplechase. Big, deep bodied, powerful, and I am interested in longer distance events over sprinters.
My problem is that I don't know anything about turf racing or steeplechase, enough to figure out what sort of record is "good" and what distance determines a middle- or long-distance runner (over a sprinter.)
Can you give an idea of which tracks in NA run those sorts of races, and maybe point at some leads to follow up? If you've owned or been involved with those type of horses, can you give me an idea of what you'd consider a "long" career? Or how many races would "prove" a horse to your satisfaction? Do you expect them to run 2 a year, or run races every few weeks for several years?
Input much appreciated!