Now’s the time to plan which activities you most want to attend Saturday, Jan. 13. Events are free, though some suggest a donation.

Discover Petroglyphs in the Tortolitas — Wild Burro Trailhead, Ritz Carlton Resort at 14810 N. Secret Springs Drive, Marana. Six-mile round trip with an elevation gain of 900 feet. The hike begins at 8 a.m. Call 382-1950 for more information and to sign up by phone. Organizer: Bob Stinson. Contact: 307-0025 or bstinson@maranaaz.gov

Run with the Saguaros: 4- or 1-mile Social Run — Saguaro National Park West, 2700 W. Kinney Road. Noncompetitive 4-mile or 1-mile social run. 8:30 a.m.-11:30 a.m. Visit azroadrunners.org to register. Organizer: Dari Duval or Cam Juarez. Contact: 306-6254; dfduvalaz@gmail.com. Phone: 548-8688.

Witness the Fitness at El Pueblo Neighborhood Center — El Pueblo Park, 101 W. Irvington Road. Outdoor fitness including: Zumba class by El Rio’s Ernie Perez, Tai Chi and a Family Fun Park Rx Walk led by Kimiro DeBose. Organizer: Donna Trujillo. Phone: 791-5155. Email: Donna.Trujillo@tucsonaz.gov. 9 a.m.-noon.

The Chuk-son Trail and Beyond: Urban Explorations — El Minuto Cafe, 354 S. Main Ave. 1.5-mile walking exploration. For more clarification, please call the Ironwood Tree Experience Urban Field Station at 520-829-7001 or email eric@ironwoodtreeexperience.org. Organizer: Eric Dhruv. Phone: 271-5748 or eric@ironwoodtreeexperience.org. 9 a.m.-noon.

Ride to Remember and Renew — Banner-University Medical Center, 1501 N. Campbell Ave. Group bike ride. Organizer: Damion Alexander, Phone: 977-5664 or damion@damionalexander.com. 9 a.m.-noon.

Stroll and Roll — Christina-Taylor Green Park, Canada del Oro Christina Taylor Green Memorial River Park, Shannon and Magee roads. Walk, roll or run. 9 a.m.-noon.

Arizona Trail Hike or Ride — Gabe Zimmerman Trailhead, Davidson Canyon, Vail. Mountain bike or ride horseback. Organizer: Matt Nelson, 404-7992 or matthew@aztrail.org. 9:30 a.m.-noon.

Free Fitness Saturday — The Core at La Encantada, 2905 E. Skyline Drive. All fitness classes free. Register at www.thecoretmc.com. Organizer: Tara Bruce. Phone: 324-2673 or Tara.Bruce@tmcaz.com. 10:30 a.m.-3:30 p.m.

Ultimate Frisbee Beyond Tournament — Riverfront Park, 551 Lambert Lane, Oro Valley. Coed teams. $5 suggested donation. Noon-4 p.m.

Together We Move Beyond Main Event — Mercado de San Augustín, 100 S. Avenida del Convento. Activities for all ages and fitness levels. Noon-3 p.m.

Storytelling & Scavenger Hunt at Valley of the Moon — Valley of The Moon, 2544 E. Allen Road. More information at www.tucsonvalleyofthemoon.com. 3-7 p.m.