ADULT ACTIVITIES. Michigan Senior Olympics 2018 Summer Games registration is open for events including: archery, badminton, basketball, billiards, bocce ball, bowling, cycling, dancesport, disc golf, golf, horseshoes, pickleball, powerlifting, power walk, 5K and 10K, racewalk, racquetball, shuffleboard, skills challenge, softball, swimming, open water swim, table tennis, tennis, track & field, triathlon, and volleyball.