The On Cloudultra Pro has emerged as a pivotal innovation in On’s running footwear offerings. Unlike its predecessors, which leaned towards more cushioned adventuring, the Cloudultra Pro represents a genuine shift toward ultra-distance racing capabilities. "It’s lightweight, fast, stable, and built for efficiency across long distances," said Alastair Dixon, who extensively tested the shoe.
Dixon noted how the shoe performed well on both steep alpine ascents and quick descents, highlighting its versatility. "After logging plenty of miles in my pair, it’s clear that On finally has a competitive ultra-distance trail shoe on its hands," he remarked. This shoe illustrates the efforts of On’s engineering team, who have taken feedback from professional athletes into serious consideration, resulting in a design that feels more refined and responsive than the earlier models.
For those concerned about specifications, the On Cloudultra Pro is priced at $260 and weighs only 9.5 ounces (269 grams) for a size 9 men's pair. With a 6mm drop offering a 38mm heel to 32mm forefoot stack height, it aims to strike a balance between cushioning and support. The upper is constructed from a zoned Leno weave mesh, providing breathability and support, while the midsole utilizes a dual-layer Helion™ HF hyperfoam combined with a nylon Speedboard®, reinforced with 15% glass fiber for enhanced performance.
In his detailed review, Dixon mentioned that the fit of the Cloudultra Pro is true to size with a moderate width that accommodates most foot shapes. "The upper molds nicely to the foot after a couple of runs," he observed, noting that the structured collar helps secure the heel without compromising comfort. However, he experienced slight rubbing on his small toe, raising a consideration for runners with wider feet.
As for performance, the Cloudultra Pro showcases a speedy feel with an effectively lightweight design. "At 9.5oz for my US(M)9, it’s light for its cushioning," he highlighted, emphasizing how it facilitates quick turnover. This efficiency enhances the experience on a variety of run types, allowing for a smooth transition between different terrains.
The dual-layer Helion HF midsole plays a significant role in maintaining stability and comfort. The shoe’s engineered rocker geometry ensures smooth rolling, helping runners to maintain momentum without expending unnecessary energy. Dixon noted, "there’s that forward-rolling sensation that keeps you flowing through each stride," affirming the shoe's ability to support efficient running over long distances.
The outsole, equipped with Missiongrip™ rubber and 3.5mm lugs, provides solid traction. It features an updated geometry that enhances stability across various surfaces, a crucial factor for ultra-trail runners who often face challenging conditions.
In conclusion, the On Cloudultra Pro emerges not only as a staple for recreational runners but stands tall as a true contender in the competitive landscape of ultra-distance trail racing footwear. "It sets a new benchmark for On’s trail line," Dixon concluded, underscoring the growing significance of this model in outdoor athletic performance. As more runners test and refine their experiences with the Cloudultra Pro, it is poised to influence future designs within On's acclaimed trail running category.