Madonna baby’s daddy and personal trainer Carlos Leon is spotted biking around in the Lower East Side in NYC.

Tori Spelling and Dean McDermott take the kids out on a family bike ride around Malibu. The little ones are riding in the iBert Safe-T Seat.

See more Tori Spelling: Celebrity iBert Spotting.

Gerard Butler and a friend get a bit of exercise on their Sunday by biking around Downtown Manhattan.

And check this out — the Scottish actor and his friend are the way over near the centerline of the road.

Gerard James Butler is known for his portrayal of King Leonidas in “300,” The Phantom in the 2004 film version of “The Phantom of the Opera,” Gerry Kennedy in “P.S. I Love You,” and One Two in “RocknRolla.”

AnnaLynne McCord rides a pink Nirve cruiser bicycle on the set of “90210”, where she plays the show’s lead character Naomi Clark.

See more and larger @ Celebrity Gossip: AnnaLynne McCord: Bicycle Beautiful.

Check out the Kryptonite chain lock that Agyness Deyn uses to lock her sweet bike up in New York City. She only wraps the chain around her frame, however, leaving her wheels unprotected.

Billy Zane leaves Fred Segal on his bicycle after having lunch alone. Billy stars in the new movie Magic Man. Photo by Matt Symons, PacificCoastNews.com

More celebrity bike photos here.