MBC variety show "Extreme84" concluded its 10-episode run on January 1st. This program is an ultra-extreme running variety show that captures Kian84 testing himself in extreme marathon environments. "Extreme84" was planned as an extension project of MBC's flagship variety show "I Live Alone."

Producer Park Soobin revealed that this project lasted about a year, during which Kian84 ran 4-5 days a week for a year. He said, "The project took almost a year. I met writer Kian yesterday, and when I thought 'It's finally over,' my feelings were different." He added that having experienced extreme conditions with Kian84 made the emotions special.

Producer Jung Jiwoon introduced this program as his first directorial work, saying, "Although 10 episodes may seem short, we spent half a year together. It felt refreshing and touching to endure the extremes and take on the challenge together for my first directorial work." Producer Kim Kiho explained that "Extreme84" originated from Park Soobin PD's marathon experience, emphasizing, "Since it was a genre I had never tried, I personally learned a lot, and it was challenging not only for the runner but also for the staff."

Producer Kim Kiho praised Kian84 as a "broadcast genius," appreciating his sincere personality. He said, "He was someone who had the ability to show exactly what he thought in front of the camera." It was reported that Kian84 actively participated in the program's production from the beginning by offering many ideas.

"Extreme84" featured various unique marathon challenges such as the South African Big Five Marathon, the French Médoc Wine Marathon, and the Arctic Marathon. Producer Park Soobin explained, "The Great Wall Marathon in China was the first candidate, but due to several restrictions, it was changed to the Big Five Marathon." He added, "The camera couldn't appear halfway through the 42km, and writer Kian said stairs were difficult."

After completing a year of filming, Kian84 took a break from running for a while. Producer Park Soobin said, "He ran more than 300km almost every month, so he rested for about a month and has now started running again." Kian84 is running again with the goal of achieving a sub-4-hour finish.

"Extreme84" is a program created through the challenges faced by Kian84 and the producers together in extreme environments. They coordinated their opinions to complete the program. Each producer said they learned a lot through collaboration with Kian84. "Extreme84" attracted many viewers as a new genre of variety show.