Following his break up from singer Rita Ora, Rob Kardashian packed on 40 pounds. Kim Kardashian's little brother was spotted on Wednesday in Culver City, California taking a hike in his mission for weight loss.

Kardashian has been adamant about wanting to lose weight, even telling his sisters on an episode of "Kourtney & Kim Take Miami" that he needed to stop finding comfort in food and get his life together.

According to the Huffington Post, Kardashian said, "All I did was waste a lot of money and gain 40 pounds," Rob told his sisters," "I need to focus on me. That's all I wanna be about."

Kardashian is now on a quest of a 40 pound weight loss mission. According to the Daily Mail, on his recent hike the youngest Kardashian sported a slimming black T-shirt combined with a pair of baggy white Pyrex shorts that he wore over workout leggings.

Giving his sock line some publicity Rob Kardashian wore a pair of socks from his Arthur George collection with gray sneakers.

The reality star told Ryan Seacrest that he would cry every time he was naked in the shower. "Every time I hop in the shower and see myself naked I cry.

"My penis looks so small now."

However the star sees a silver lining in his dilemma, "the upside is, every time you lose 10 pounds you gain an inch on your penis," Kardashian told Seacrest.

The Daily mail reported that upon committing himself to a low-carb diet and two-a-day work routines, he is hoping to reach his weight loss goal by July 4th.

To see more photos of Rob Kardashian navigate his journey to weight loss click Here.