The On Cloudultra Pro represents a significant development in trail running footwear, particularly for those engaged in long-distance mountain racing. As experienced ultrarunners know, shoe choice can greatly influence performance over a wide array of terrains and conditions. The Cloudultra Pro has emerged at a time when athletes are increasingly focused on optimizing gear for efficiency and comfort on rugged courses.
At a retail price of $260, the Cloudultra Pro does not shy away from being an investment. It has been labeled a potential “trail super shoe,” although this designation remains contentious. The shoe integrates advanced cushioning technologies, featuring a stack height of 39 millimeters in the heel and 33 millimeters in the toe, with a 6-millimeter drop, making it particularly suitable for downhill sections, which often present their own challenges in technical races. Tested under the rigors of competitions like the Hardrock 100 and the Western States 100, the shoe garnered attention through its association with elite athlete Katie Schide, who transitioned to On and achieved immediate success, claiming victory at the Madeira Island Ultra-Trail.
The midsole’s construction is central to its performance capabilities, comprising Helion foam—split into soft and firm layers—with a TPU Speedboard integrated for energy return. The plate’s design, while slightly understated compared to other brands’ offerings, enhances the shoe’s adaptability, particularly during technical descents. Experienced runners will appreciate how the Cloudultra Pro manages to deliver comfort on extended runs without succumbing to the stiffness often found in tweaked models designed for speed. During field tests, runners found the shoe’s plush underfoot feel conducive for long hours on diverse terrain, facilitating a sense of control that’s crucial when navigating unpredictable surfaces.
Another noteworthy facet is the upper’s innovative materials. The shoe employs a Leno weave mesh, which offers breathability while ensuring durability and water resistance—a valuable combination for mountain racers facing varied weather. This design does well to regulate temperature, a key aspect as runners tackle altitude gains and temperature fluctuations in longer races. Notably, the gusseted tongue provides a secure fit, accommodating different foot shapes, although it might feel too spacious for those with narrower feet.
Another performance element deserving mention is the outsole, engineered with On’s MissionGrip rubber featuring 3.5-millimeter lugs. While the lug design appears optimized for speed on hardpacked trails, it does raise questions concerning its performance in muddy conditions. Experienced runners know that traction can be paramount, especially in races susceptible to inclement weather. While the outsole performs well on dry trails and is adept at handling rocky terrain, it does lack the sticky grip found in some traditional trail shoe offerings, which may necessitate caution in slick conditions.
Ultimately, the evolution evident in the Cloudultra Pro signals On’s commitment to addressing the nuanced demands of mountain ultrarunners, moving beyond previous iterations that left users divided. The shoe aims to combine comfort, traction, and responsiveness—qualities that are essential for a range of mountain races, from UTMB qualifiers to local ultras. The synergy between its various components suggests that On has learned from past missteps, creating a product that not only serves the elite but also meets the varied needs of seasoned mountain racers.
Considering the advances presented by the Cloudultra Pro, one key takeaway for ultrarunners is the importance of trialing gear that balances comfort with performance for long-duration pursuits. Whether you’re navigating technical descents or enduring the rigors of ultra-distance events, the insights gleaned from firsthand experiences can guide footwear choices that optimize your training responses and racing outcomes. Prioritizing comfort, particularly in the midsole construction and fit strategies, will be crucial as you approach the terrain and demands of upcoming races.
