For me it depends what horse I'm on. I've gotten broken patterns and things on Thunder, I have run 16's-17's on Buttercup [without letting her actually go] and I've run 30's with Star[who prefers to buck the whole way]
My best time ever, on the horse that was my barrel boy, 14.862. I think it was reg. Size, because that's where they set the barrels up for the pro rodeo when they come, and it was the same arena. Of course, this was the first time I'd tried him on barrels, he took the bit and just RAN, and I had absolutely no control, so I can't say I had anything to do with it. LOL.
Usually I run 16's though. Just solid 16's on my little rodeo/playday horses.
My fastest time in one arena was around a 16 or so, but that was before I had all my confidence. If I went back there now, I could run a 15 or so probably.
But like others have probably said, it all depends on the size of the arena.
Haha, it was 22+ something on my Arab mare but as it was her first time running a real barrel pattern ever, I was pretty proud
I know I ran a 15 something on her dam and ended up beating out some local QH champions, however in their defense, the pattern was tiny. My little Arab mare was so nimble and agile, it wasn't much a fair contest because you barely had room to work up any decent speed so her light weight and ability to fly off a turn served us well.
Here's our vid - heh heh, need to work on those turns a bit!
On Tanner, my best time was 20 seconds, Magic was just under that, maybe 19 or 18 once.
We've never placed, but I've only ever run barrels on them for the past about half a year, and they've been left out to pasture for almost five years prior to that, so we're getting progressively better. I'm told 20 seconds is good for only half a year's work, though.
Both Magic and Tanner love running barrels... and they both perform better at a show than during practice. Get them in front of a crowd, and lay out a trio of barrels, and they'll basically run the pattern on their own, with me just telling them when to go and when to stop, sometimes helping Magic around a turn.
I run poles and flag on them too, though I don't keep track of their times too often. Magic has placed in both a handful of times, and Tanner has gotten third in flags. They're not quite as exuberant in them as barrels, and Tanner seems perpetually confused by flags (she always wants to turn the barrels, rather than just run past).
It really depends on the size of the course. I think my fastest time ever was around 14.556, minus or plus that last number because I can't remember exactly. And my slowest time ever was about 40s when I was riding a younger horse who decided to through a tamtrum and I made sure his tail went around those darned barrels. He fought the whole way, but I still made him do it.