Horsing around
Arlington International Racecourse begins what could be its final season with Opening Day on Friday and Kentucky Derby Day on Saturday. See the horses run while you can at 2200 W. Euclid Ave., Arlington Heights. $10-$50. (847) 385-7500 or arlingtonpark.com. 2:25-6:30 p.m. Friday and Saturday, April 30 and May 1
Sharks at the drive-in!
The McHenry Outdoor Theater reopens for the summer season with a double bill of Jaws and Twister at 1510 N. Chapel Hill Road, McHenry. Tickets are $12 for adults and $6 for children, senior citizens, and current and former members of the military. facebook.com/mchenryoutdoor. Box office opens about 6:30 p.m. Friday, April 30.