Patrick Sang reflects on Faith Kipyegon’s Breaking4 mile quest, and his concerns

Patrick Sang, the renowned coach behind running greats Faith Kipyegon and Eliud Kipchoge, has opened up about the Breaking4 project — an ambitious attempt to push the limits of human performance and athletic endurance.

In June, Kipyegon set out to become the first woman ever to run a sub-four-minute mile, a barrier long seen as impossible. Already the world record holder with 4:07.64 set in 2023, Kipyegon’s target demanded an extraordinary improvement of more than seven seconds.

Backed by Nike, the attempt featured elite pacemakers, cutting-edge aerodynamics, and custom racing spikes designed to maximize speed. The event took place at the Stade Sébastien Charléty in Paris on 26 June this year.

Kipyegon gave a valiant effort, clocking 4:06.42 — lowering her own world record by over a second but narrowly missing the elusive four-minute mark.

Sang: ‘I Was a Bit Worried for Faith’

Speaking to Citius Mag, Patrick Sang reflected on the project’s successes and shortcomings. He drew parallels between Kipyegon and Kipchoge, noting that both share the same discipline, humility, and deep sense of purpose that has defined their careers.

“Faith and Eliud mirror each other in many ways,” Sang said. “They both value the people around them and draw strength from those who support them.”

Despite minor challenges, Sang described the Breaking4 experience as largely smooth and well-executed. “Not everything was within our control,” he admitted. “But the process flowed naturally from the careful preparation that had gone into it.”

He praised the unity and collective effort behind the project, saying it demonstrated how collaboration can expand human imagination. “It allowed people to think beyond limits — that the human mind and possibilities are elastic,” he said.

Concerns After Paris

Still, Sang acknowledged that something about the Paris race left him uneasy. He sensed that Kipyegon’s body language after the race revealed emotional fatigue. Though he had not spoken to her immediately, he could tell the experience had affected her.

“I was a bit worried for Faith in Paris,” Sang admitted. “You could see from her facial expression that something could have been better. Maybe it was the timing, the preparation, or the setup — I don’t know.”

Technically, Sang insisted, everything was done correctly. His concern was psychological — how Kipyegon would interpret the experience: as failure or fuel.

Fortunately, her response in the weeks that followed put his worries to rest. Just days later, Kipyegon delivered a stunning world record in Eugene, Oregon, reaffirming her mental strength and technical mastery.

“That performance reassured me,” Sang said. “It showed that everything we did for Breaking4 wasn’t in vain. It gave her momentum again.”

A Season of Redemption

Kipyegon’s rebound was remarkable. She went on to defend her 1500m world title at the 2025 World Championships in Tokyo and later captured silver in the 5000m, finishing behind close friend Beatrice Chebet.

For Kipyegon, the sub-four dream remains alive. “I have proven that it is possible — it’s only a matter of time,” she said after the race. “If it’s not me, it will be somebody else. I won’t lose hope. I’ll keep trying until I get it one day.”

Inspiration Beyond Records

Beyond records and medals, Kipyegon hopes her pursuit inspires young girls and her daughter to believe in possibility.

“I will tell them we are not limited,” she said. “We can limit ourselves with our thoughts, but it’s possible to try everything and prove to the world that we are strong. Keep pushing.”