Seems too much, especially given her antics.
What is blackface on Halloween costumes though??
You are in a running road race (fun run) and someone you do not know keeps passing you, then slowing, then passing, etc and it is irritating. You:
Get over it, ignore it
Say to them "Make up your Mind, you are annoying me"
Say "Can you please run somewhere else"
Curse aloud in general, drawing attention
or
Slow right down till they are out of sight and never run in a race again