Final registration for American Roundball Corp. spring...

Final registration for American Roundball Corp. spring leagues for boys and girls--high school varsity and junior varsity players and teams--will be held Sunday at 10 a.m. at North Hollywood High and at 4 p.m. at Camarillo High. Information: (818) 991-3761.

* Registration for the American Roundball Corp. Instructional Basketball Academy for boys and girls in grades 1-8 will be held Sunday at 3 p.m at Camarillo High. Information: (818) 991-3761.

* Registration for men’s and coed adult softball leagues ends today at the Castaic Sports Complex. Registration for the women’s league is through March 21.

The men’s and coed leagues begin play Monday and run through June 29. The women’s league will run April 1 through July 8.

Information: Jeff Dorst at (805) 295-3502.

* The ninth annual Crespi Classic 5K/10K Fun Run and 5K Fun Walk to benefit the school’s athletic department will take place Sunday at Pierce College.

The competition will begin and end on the Pierce football field, with participants running in age divisions ranging from 9-and-under and up. Awards will be given to the top five finishers in each division. Information: (818) 345-8781.