4Endurance Becomes Official Nutrition Partner of Istria300
4Endurance, one of Europe’s fastest-growing endurance nutrition brands, has been named the Official Nutrition Partner of Istria300 for the 2026 edition.
Founded in Slovenia, 4Endurance has earned the trust of thousands of endurance athletes across Europe, from ambitious amateurs to professional teams. The brand proudly served as a sponsor of the Slovenian Cycling Federation during Tadej Pogačar’s unforgettable back-to-back World Championship victories, fueling the Slovenian national team at the highest level of the sport.
Created by endurance athletes for endurance athletes, 4Endurance’s mission is simple: to deliver elite-level sports nutrition at accessible prices. Every product is developed with an uncompromising focus on what truly matters in long-distance cycling:
• High-quality, evidence-based ingredients
• Outstanding digestibility and stomach comfort
• Reliable, sustained energy during the hardest efforts
• Great taste with natural aromas
All 4Endurance products are formulated according to the latest sports nutrition science and rigorously tested by elite athletes in real racing conditions, from national championships to Olympic and World Championship level. This real-world testing ensures maximum performance, optimal fueling, and comfort even on the longest and most demanding rides.
Fueling Istria300 2026
As the Official Nutrition Partner, 4Endurance will support all participants with carefully selected fueling products (energy gels, energy bars, isotonic sports drinks, and more) available at feed zones during the event. Riders tackling the iconic routes through beautiful Istria will benefit from science-backed nutrition.
This partnership reinforces 4Endurance’s commitment to supporting iconic European cycling events and helping every rider, regardless of level, achieve their goals with better, more reliable sports nutrition.
