Rachel Bilson walk at Griffith Park

Getting her exercise in with a nature outing, Rachel Bilson took her faithful pup Thurmen Murmen for a walk at Griffith Park in Los Feliz on Wednesday afternoon (October 29). And though the former “OC” starlet seemed to be holding up well, her pet pooch was so worn out that Rachel had to carry him back to the car.

In related news, Miss Bilson is awaiting the release of her new movie “New York, I Love You,” along with “Waiting for Forever,” an indie romance directed by James Keach. According to IMDB, the movie is “about a young man Will Donner (Tom Sturridge) who’s happily unemployed and heads to Hollywood to spend the rest of his life with a 25-year-old actress who also happens to be his childhood girlfriend Emma Twist (Bilson).” Enjoy the pictures of Rachel Bilson out for a dog walking adventure (October 29).