Barnabas Kiplimo Runs 2:18 Marathon in the World’s First Carbon-Plated Sandals
- Diego Tobias

- Jan 22, 2025
- 4 min read
Updated: Jan 24, 2025

In the world of running, athletes are constantly pushing the boundaries of what’s possible. From record-breaking performances to cutting-edge technology, the evolution of the sport never ceases to amaze. But few things have turned heads quite like Barnabas Kiplimo, the Kenyan marathoner, who recently ran a blistering 2:18 marathon—wearing the world’s first carbon-plated sandals.
Yes, you read that right. Sandals.
The groundbreaking footwear, known as “The Nirun”, was created by the innovative Thai running brand Nirun Performance Gear. Combining traditional design with modern technology, the sandals are a bold step forward in minimalist running footwear. Kiplimo’s performance has not only spotlighted this unique product but has also sparked a global conversation about what’s next in the evolution of running shoes.
What Are Carbon-Plated Sandals?
The Nirun sandals are the world’s first carbon-plated minimalist running shoes, blending the barefoot running movement with the performance benefits of carbon-fiber technology. Here’s what makes them so unique:
Carbon Plate Technology: Similar to modern carbon-plated running shoes, The Nirun sandals feature a full-length carbon plate embedded within their ultra-thin midsole. This provides energy return and propulsion, allowing runners to maintain efficiency even at high speeds.
Minimalist Design: Staying true to the principles of minimalist running, The Nirun sandals have an open-toe design with lightweight straps to secure the foot. This promotes a natural running gait while offering just enough structure for performance.
High-Tech Materials: The sole is made from responsive foam, which absorbs shock and provides a balance of cushioning and firmness. The rubber outsole offers grip and durability on various surfaces, from roads to trails.
Lightweight Build: Weighing just 5.4 ounces per sandal, The Nirun is one of the lightest pieces of performance footwear on the market.
How Did Kiplimo Make History?
Kiplimo’s achievement came during a marathon in Chiang Mai, Thailand, where he competed alongside runners in more traditional footwear. Despite the unconventional choice of sandals, Kiplimo clocked an impressive 2:18:45, finishing in the top 10.
For context, a time of 2:18 is exceptional for any runner—and nearly unheard of for someone wearing minimalist footwear. Kiplimo credited the sandals for helping him maintain his form and energy over the grueling 26.2 miles.
“I felt light and free,” Kiplimo said after the race. “The sandals gave me a natural stride, but the carbon plate also gave me the push I needed to stay strong late in the race.”
The Inspiration Behind The Nirun
The Nirun sandals were developed by Thai running brand Nirun Performance Gear, which set out to create a product that combines traditional Thai sandal-making with cutting-edge running technology.
The brand’s founder, Thanapon Sirithorn, explained the philosophy behind the design:
“Thailand has a rich history of running and walking in sandals. We wanted to honor that tradition while embracing modern innovation. The carbon plate allows runners to perform at their best, while the minimalist design connects them to the roots of running.”
Can Carbon-Plated Sandals Revolutionize Running?
Kiplimo’s performance raises an important question: Could carbon-plated sandals represent the future of running? While they may not replace traditional running shoes anytime soon, they offer a unique blend of benefits:
Natural Running Gait: The minimalist design encourages midfoot or forefoot striking, which many believe reduces impact and improves efficiency.
Lightweight Feel: At just 5.4 ounces, the sandals are significantly lighter than most carbon-plated running shoes, which typically weigh between 6.5–9 ounces.
Cultural Connection: By incorporating traditional sandal designs, The Nirun represents a fusion of modern technology and cultural heritage.
However, there are challenges to widespread adoption. Runners accustomed to heavily cushioned shoes may find the minimalist design uncomfortable or difficult to transition into. Additionally, the sandals are not well-suited for extreme weather conditions or rugged trails.
The Reaction from the Running Community
Kiplimo’s marathon performance has sparked a mix of amazement, curiosity, and skepticism in the running world.
Supporters of Minimalist Running: Advocates of barefoot and minimalist running have praised the sandals for promoting natural movement while incorporating the performance-enhancing benefits of carbon-fiber technology.
Skeptics: Others question whether the sandals provide enough protection for long-distance running, particularly on roads. Critics also wonder if the lack of upper support might lead to injuries over time.
Curious Runners: Many runners are intrigued by the sandals and eager to test them, especially given Kiplimo’s success.
What’s Next for The Nirun and Minimalist Performance Footwear?
Following Kiplimo’s remarkable marathon, Nirun Performance Gear plans to expand its reach globally, marketing The Nirun sandals to runners who value innovation and tradition. The brand also hinted at future iterations of the sandals, including models with additional cushioning for longer runs and adjustable straps for personalized fit.
Kiplimo’s Next Steps
As for Barnabas Kiplimo, his groundbreaking marathon performance has set the stage for a promising 2025 season. He plans to continue racing in The Nirun sandals, including appearances at both road and trail events. “I believe this is just the beginning,” Kiplimo said. “There’s more to discover in what we can achieve with these sandals.”










Comments