That has happened to me several times but what is even more pathetic is that I'm a woman and some random guy tries to race me. Usually it's either a young boy or some out of shape guy going out for a run.
The most recent time I was running in my parents neighborhood just taking it easy since it was my second run of the day. All of sudden I could hear someone coming up on me. I glanced behind and it was a kinda of pudgy guy with a t-shirt on gunning for me. So as he came by me and I said hello to him and he continued to try to pull away from me. I didn't go charging after but stayed pretty close to him so I could go cruising past him figuring he was stopping sometime soon.
Sure enough we get just under a half mile down the road and he stops looking rather spent. Just as he stops a female neighbor says "Look at you out there jogging". I ran by the two of them and said "Have a good night". So I kept on running and about 15 minutes later I ran back by the same way and he was still out chatting with his neighbor and just I looked over and smiled at him. I think at this point he wasn't feeling so good about his 1/2 mile sprint. I haven't seen him running since.