Get out and about this weekend in metro Atlanta by lacing up your sneakers and choosing one of several 5K walks/runs. Or try another fun, healthy event like puppy yoga or green living expos.

Check out the following 16 things to do in metro Atlanta this weekend:

Cobb

Marietta Greek Festival. 3-11 p.m. Friday, May 17, 10 a.m.-11 p.m. Saturday, May 18, 11 a.m.-6 p.m. Sunday, May 19. $5 adults, children 12 and under free, free admission for everyone from 3-5 p.m. Friday. Holy Transfiguration Greek Orthodox Church, 3431 Trickum Road, Marietta. http://mariettagreekfestival.com/.

The 29th annual Marietta Greek Festival has plenty of food and pastries, of course, along with live music, dancers, an indoor marketplace and kids' area.

Outdoor Movie. 6 p.m. Saturday, May 18. Swift-Cantrell Park, 3140 Old Hwy. 41, Kennesaw. 770-422-9714. https://kennesaw-ga.gov/.

Pre-movie entertainment, giveaways and other fun starts at 6 p.m., and you'll want to bring a blanket or low-back chair to watch "Mary Poppins Returns" on a giant inflatable screen after sundown.

Alive! Expo Atlanta. 10 a.m.-6 p.m. Saturday, May 18 and 11 a.m.-6 p.m. Sunday, May 19. $5 admission plus $5 parking per day per car. Cobb Galleria Centre, Two Galleria Parkway, Atlanta. https://aliveexpo.com/about_show.php.

Learn about natural products and green living with healthy cooking demos, lectures, free samples and more.

Bluebird Trail Walk and Talk Tour. 10 a.m.-noon Saturday, May 18. Free. Green Meadows Preserve Park, 3780 Dallas Highway, Powder Springs. https://www.cobbcounty.org.

Grab your comfortable shoes and a bottle of water to walk the short and easy 2.3-mile trail. Bluebird nest boxes and feed stations have been placed along the trail, so keep your eyes out for these at-risk birds.

DeKalb

Lunar Geography 101. 8 p.m. Friday, May 17. Free. Fernbank Science Center, 156 Heaton Park Dr., Atlanta. http://www.fernbank.edu/.

As the 50th anniversary of the Apollo 11 landing approaches, Fernbank's planetary geologist will lead a presentation about geologic lunar features found near the landing site. Attendees will also be able to view (weather permitting) through the largest telescope in the southeast.

All proceeds from The Brookhaven Bolt 5K will be donated to Ashford Park Elementary School.

Credit: From The Brookhaven Bolt's Facebook page

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Credit: From The Brookhaven Bolt's Facebook page

Brookhaven Bolt 5K. 8 a.m. race start, Saturday, May 18. $30. 1410 Dresden Drive, Brookhaven. http://www.brookhavenbolt.com/.

The 12th anniversary Brookhaven Bolt 5K winds through the Ashford Park neighborhood and has been called challenging but fair. It's an AJC Peachtree Road Race qualifier, and all proceeds are donated to Ashford Park Elementary School.

Georgia Spartans #Learn2Live Health Expo and Celebrity Basketball Game. 3-6 p.m. Saturday, May 18. Free. Exchange Recreation Center, 2771 Columbia Drive, Decatur. https://www.eventbrite.com/.

Get health screenings, watch a celebrity basketball game and dunk contest and shop at vendors.

Robot Day. Included with price of museum admission, free for members. Fernbank Museum of Natural History,767 Clifton Road, Atlanta. 404-929-6300. https://www.fernbankmuseum.org/.

Learn how intelligent machines are advancing science, commerce, human collaboration and more with local robotics groups. Activities include learning about the technology behind the R2-D2 and BB-8 robots.

North Fulton

GirlStrong Nation 5K Run/Walk. 7 a.m. registration, 9 a.m. race start. Saturday, May 18. $35. Riverside Park, 575 Riverside Drive, Roswell. https://www.girlstrongnation.com/events.

Run along the trails of Riverside Park to help raise awareness of ovarian cancer and funds for the Ovarian Cancer Institute.

Who could resist the puppies that help out with yoga at the Atlanta Humane Society - Mansell Campus?

Credit: From atlantahumane.org

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Credit: From atlantahumane.org

Puppy Yoga. 6:30-7:30 p.m. Sunday, May 19. $30. Atlanta Humane Society – Mansell Campus, 1565 Mansell Road, Alpharetta. 404-875-5331. 404-875-5331. https://www.facebook.com.

Take a yoga class taught by a certified instructor from Lift Yoga, and you'll be joined by adoptable puppies. You can also spend more time with them in the Puppy Room after class.

Alpharetta Symphony Orchestra Concert. 7:30 p.m. Saturday, May 18. Free. Brooke Street Park, 2 Park Plaza, Alpharetta. https://www.alpharettasymphony.com/.

Bring a blanket or chair and enjoy a free Alpharetta Symphony Orchestra concert featuring classics and American favorites.

Emory Johns Creek Hospital 5K Scrub Run and Community Health Festival. 8 a.m. fun run and walk, 9 a.m. 100-yard dash for kids 10 and under, 8-11 a.m. health festival. Saturday, May 18. Free health screenings, $25 run/walk. Emory Johns Creek Hospital, 6325 Hospital Parkway, Johns Creek (outside Physician's Plaza, Entrance C). 678-474-7000. https://www.active.com/.

Join in the race or walk or take advantage of free health screenings such as cholesterol, glucose, blood pressure and body mass index (BMI). Free food will also be offered, and music and a bouncy house will also be available.

Gwinnett

Summer Concert Series. 8 p.m. Friday, May 17. Free. Lawrenceville Lawn, 210 Luckie St., Lawrenceville. https://www.lawrencevillega.org/.

Bring a lawn chair or blanket to enjoy music from The Allman Brothers, Prince and Zac Brown tribute bands.

The Indie Green Festival in Duluth puts the focus on healthy living.

Credit: From Gwinnett Indie Green Fest's Facebook page

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Credit: From Gwinnett Indie Green Fest's Facebook page

Indie Green Festival. 11 a.m.-6 p.m. Saturday, May 18. Free. Duluth Town Green, 3140 Main St., Duluth. https://www.facebook.com/.

Have fun shopping with local artisans as you discover diverse vegan and vegetarian cuisine options.

Touch-A-Truck and Meet-A-Princess. 10 a.m.-noon. Saturday, May 18. Free. Notre Dame Academy main campus parking lot, 4635 River Green Parkway, Duluth. https://www.ndacademy.org/.

Touch, explore and take photos with several types of trucks, tractors and emergency vehicles, and then head inside to meet Moana.

#RecessForAll Walk, Dance, Limp & Roll 5K and Raffle. 8:45 a.m.-12:15 p.m. Saturday, May 18. $15. Parkview High School, 998 Cole Road, Parkview High School track, Lilburn. https://runsignup.com/.

Participate in the 5K, join in extra activities and buy a raffle ticket to help support #RecessForAll phase 2, an all-inclusive playground, at Arcado Elementary School.