Kenyan runner Joyline Chepngeno conquering the renowned Sierre‑Zinal mountain ultra‑marathon in France — though actually taking place in Switzerland, often associated with the Alps region.

This race, known for its stunning alpine scenery and punishing vertical gain, marked a triumphant title defense by Chepngeno.

Joyline Chepngeno Clinches Title at Sierre‑Zinal Mountain Race

In one of the most grueling and iconic mountain races in the world, Kenyan mountain specialist Joyline Chepngeno reaffirmed her dominance at the 2025 Sierre‑Zinal.

The “race of five 4,000‑metre peaks,” set across the Swiss Alps, became Chepngeno’s realm once more—her performance a compelling blend of endurance, strategy, and sheer grit.

Sierre‑Zinal, often dubbed “La course des cinq 4000,” unfolds across a demanding 31-kilometer course with approximately 2,200 meters of ascent and 1,100 meters of descent (iRunFar, Canadian Running Magazine).

It stands out not only for its breathtaking scenery but also for its steep climbs, making it a highlight on both the Mountain Running World Cup and the Golden Trail World Series circuits (iRunFar).

Race Day Drama: Intense Heat and a Grueling Course

Held on August 9, 2025, the race began under a burning alpine sun, with temperatures soaring into the mid‑30 °C (mid‑90 °F) around the 11 a.m. start (Canadian Running Magazine, iRunFar).

While most mountain races benefit from cooler conditions, this year’s scorching weather added a layer of physical and mental challenge, testing athletes as they began an early and steep climb—1,300 meters of gain in the opening 8 km alone (Canadian Running Magazine).

Despite the heat, Chepngeno displayed exceptional composure.

She surged ahead before the midway point and maintained a commanding lead throughout, ultimately crossing the finish line in 2:54:29 (NBS Sport). Behind her, Kenyan newcomer Caroline Kimutai put on a remarkable debut performance to finish second at 2:55:31, while the USA’s Katie Schide claimed third (NBS Sport).

This performance signified not just a win—but a bold statement of dominance in extreme mountain terrain and heat.

A Kenyan Sweep: Triumph in Men’s and Women’s Races

Chepngeno wasn’t the only Kenyan on the podium.

In a stunning display of depth and talent, the men’s race also ended in Kenyan victories.

Philemon Ombogo Kiriago emerged triumphant, clocking 2:28:45, followed closely by teammates Patrick Kipngeno (2:29:08) and Michael Selelo Saoli (2:29:14), completing a Kenyan sweep of the top three spots (NBS Sport, Yuni Health).

This simultaneous domination in both divisions underscored Kenya’s growing prowess in mountain running—a discipline historically dominated by athletes from Europe.

Chepngeno’s Masterclass: Strategy, Strength, and Resilience

What set Chepngeno’s performance apart was her tactical acumen.

Despite a blistering pace in oppressive heat, she paced herself carefully, gaining ground early and then sustaining her advantage through the punishing latter half of the course (iRunFar, Canadian Running Magazine).

Her earlier win in 2024 made this a highly anticipated return—and she delivered, showcasing maturity and precision under pressure.

Historic Significance and the Road Ahead

The Sierre‑Zinal race sits at the pinnacle of mountain running, blending heritage, challenge, and prestige.

Chepngeno’s consecutive victories in this demanding event reinforce her stature not just as a Kenyan standout, but as one of the world’s elite in vertical endurance racing.

Her 2025 performance, after triumphing in 2024, cements her position among the sport’s top athletes (iRunFar, NBS Sport).

With both the Mountain Running World Cup and Golden Trail World Series nearing their season’s conclusion, such a win may yet prove pivotal in the overall standings (iRunFar).

Joyline Chepngeno’s masterful performance at the 2025 Sierre‑Zinal mountain race in Switzerland—often culturally framed as a French Alpine event—was nothing short of extraordinary.

She navigated extreme heat, daunting climbs, and world‑class competition to claim her second straight title in emphatic fashion.

Coupled with Kenya’s sweeping of the men’s podium, this race marked a defining moment for the nation in the mountain running world.

Chepngeno’s victory was not just about speed—but about heart, tactical intelligence, and an indelible command of the mountain.

Her legacy at Sierre‑Zinal is now firmly in place—an inspiring beacon for athletes tackling the toughest vertical challenges on the global stage.