BOULDER, Colo. (CBS4) – Friends and family searched all day Saturday for a man who has been missing for almost a month.

Nate Tallman’s friends and family searched everywhere for answers in a Boulder neighborhood where the missing 25-year-old’s car was found on Thursday.

“I’ve known Nate since he was eight years old. He played football with my son Tommy, and we’ve known him forever. He’s a good kid. There’s no reason why he should have disappeared,” said family friend Diane Campbell-Ostdiek.

Tallman disappeared almost a month ago and was last seen leaving his home in Lafayette on Jan. 21. Since then loved ones and family friends have been frantically searching for him.

“I just want to help relieve some stress from the mom you know … help the family out,” said family friend Nathan Putallaz.

Friends and family believe he was heading north on Highway 287 towards Longmont.

“I can’t sleep. I’m all twisted up inside. I can’t imagine what the parents are going through,” said Campbell-Ostdiek.

Campbell-Ostdiek helps the family pass out flyers and they’re offering a $10,000 reward for information that could lead to finding Tallman.

“Just keep praying we find Nate and bring him home safe,” said Campbell-Ostdiek.

Lafayette police detectives also helped the group with their search and are asking anyone with information in the case to please contact them.