05/06/2026
In 2002, we held the first 10to4 Mountain Bike Challenge .
What began as a bold adventure down the slopes of Mount Kenya would become one of Kenya's most iconic conservation events.
More than two decades later, the Tropic Air 10to4 has grown into Kenya’s largest and most anticipated cycling event.
Each year, hundreds of cyclists & supporters from around the world unite for an unforgettable three-day challenge—an experience that extends far beyond the exhilarating 10,000-ft-to-4,000-ft ride.
This unique cycling challenge immerses participants in the breathtaking landscapes, remarkable wildlife, and vibrant communities that define the Mount Kenya ecosystem.
Today, the event stands as a vital pillar supporting Mount Kenya Trust’s conservation mission—raising crucial funds for forest restoration, wildlife protection, human-wildlife coexistence, ranger operations, and community development across the Mount Kenya landscape.