You may have seen them from the ABC show "Extreme Weight Loss."
Chris and Heidi Powell host the show that's been transforming lives through fitness and next season features a contestant that wants to conquer a marathon.
Kentucky's Sara Murphy will get that chance right here in Hawaii.
"She is height-challenged, she's 4'4" starting off at 246 pounds so something like running a marathon is nothing that you would ever dream of let alone running a 5K," said Chris Powell.
So far, Sara's reached her mid-year point on her trek to a new lifestyle. We can't reveal too many details yet, but he show's hosts say the 39-year-old's getting close to her goals.
"She's so excited," said Heidi Powell. "Literally I think it was yesterday Chris gave her the option to just run the half marathon and she turned him down again and said I'm doing the full one."
If you want to track Sara or any other running for that matter, a new app launched this year by the Honolulu Marathon's social media gurus will let you track them, just by searching for their name or number.
Click here for the Honolulu Marathon iOS app: http://bit.ly/Honolulu_App_iOS
Click here for the Honolulu Marathon Android app: http://bit.ly/hnlmarathon_app_droid
"They can actually create a watch list on the app, so they see whenever their friend or family member crosses the 10K mark, the halfway mark, the 30K mark and when they finish," said Fredrik Bjurenvall of the Honolulu Marathon.
There's also a service for runners.
"Runners can set up their Facebook updates to automatically upload or change their status updates as they're running through the course," said Bjurenvall.
Instructions on how to use that service are on the Honolulu Marathon's Facebook page. You can still sign up for the race by going down to the Hawaii Convention Center by 5 p.m. Saturday.