Sunday evening hike, 4 p.m. at the Rocky Peak Trailhead at the end of Rocky Peak Road off Santa Susana Pass. Call (805) 584-4400. Swim and Stay Fit, 6-8 a.m. at the Rancho Simi Community Park pool ...

Free. Call (805) 526-6231. Deep Water Workout, 8-9 p.m. at Rancho Santa Susana Community Park pool, 1692 Sycamore Drive. Monthly fee: $45. Call (805) 584-4400. Simi Valley Woman’s Club ...