You can do an events search on the AKC website. Go to the events tab and then follow the link to Events and Awards Search. You can pick event type, month, and state that you want to search.
It looks like the next AKC coursing is coming up in May 5,6 in Fairborn, OH and May 26,27 in Ravenna, OH
You can also look at the ASFA website, http://www.asfa.org for events.