What cute little ear covers on the left horse... and nice stop action of their feet

Well Carol, actually it was f1.6 so within my challenge. The thing is the distance between the lens and the subject. Just like you get with those wide open smartphone camera's.

I like how the "lanes" are marked with greenery! This can't have been shot wide open.... ;)

Nice shot (and I assume you didn't get run over - groan - ha). ;-)