Trail Runner Toni McCann is Seeing More Clearly

In trail running, vision is part of performance. Reading the trail, spotting changes in terrain, adjusting stride, and reacting to shifting conditions all depend on seeing clearly and quickly. For Toni McCann, trail runner and adidas Sport Eyewear ambassador, that connection is immediate.

“Your vision is one of the main tools you have,” McCann says. “You need it to read the terrain, choose your line, adjust your pace, and anticipate what’s ahead. When you can see clearly, you move more fluidly, more relaxed, and more precisely.” But for McCann, the role of eyewear goes beyond pure function.

The right eyewear is just as key. “Seeing well also means feeling more present and connected to your surroundings,” she says. “And that presence, during a race, is essential for me.”

This blend of technical performance and everyday usability is at the center of the adidas Sport Eyewear Spring/Summer 2026 collection. The lineup is designed to support runners in changing outdoor conditions while also reflecting the increasingly lifestyle-driven side of modern running culture.

At the core of the collection is the new POWERVIZN™ Lens System, developed to improve contrast, terrain definition, and depth perception while reducing distractions caused by glare, water, sweat, and dirt. The goal is straightforward: sharper, more reliable vision when conditions become unpredictable.

That matters well beyond bright summer days. In trail environments, runners often face rain, flat light, fog, humidity, and rapidly changing weather. McCann says she regularly wears clear lenses in wet conditions—not for style, but for protection and consistency.

“In the mountains, your sense of control is closely tied to what you can see,” McCann explains. “When visibility worsens—even if it’s just due to rain, flat light, or wind—you immediately become more hesitant. You slow down, you doubt your footing more, and you lose some of your fluidity.”

The collection’s two flagship models approach that challenge differently.

Kentro: Built for Everyday Training

The Kentro is designed as a more structured, full-rim option aimed at daily training and longer efforts. It features a wide field of view intended to improve awareness on the trail, along with adjustable temples and nose pads, anti-slip detailing, and ventilation for comfort during extended runs.

Lens options include Red and Photochromic versions, with the latter adapting particularly well to changing weather and light conditions.

Kaphiros: Lightweight and Minimalist

The Kaphiros takes a lighter, more stripped-down approach. Its rimless toric lens design prioritizes unobstructed vision and freedom of movement, especially during faster or higher-intensity efforts.

Like the Kentro, it includes adjustable contact points, ventilation, and anti-slip grip, but in a more minimal package. Lens options include Mid Brown with Silver Mirror for mid-light conditions, Purple with Blue Mirror for bright trail environments, and Gold Mirror for versatile all-terrain use.

For McCann, the biggest differences show up once the run actually begins.

“Being able to better perceive contrasts, depth, and surface texture helps you anticipate, not just react,” she says. “When you have a clearer sense of the terrain, you can run with more confidence and less tension. You feel more precise, and you’re able to maintain your pace and the quality of your movement more naturally.”

That reliability becomes especially important when weather shifts mid-run. Managing sweat, fogging, humidity, and rain is part of the reality of trail running, and McCann sees dependable eyewear as one less variable to think about.

“Having reliable eyewear means you don’t have to shift your attention to yet another element to manage,” she says. “You can stay focused on the terrain, your pace, and your sensations. And this, in competition as well as in training, is a significant advantage.”

While the collection leans heavily into technical function, adidas also brings a considered design perspective to the lineup. Matte metallic finishes, transparent details, and iridescent accents are designed to coordinate with adidas race kits, reflecting how performance gear increasingly overlaps with personal style.

Still, the emphasis remains on movement first.

“There are situations where you seek lightness, simplicity, and freedom of movement; others where you want a greater sense of protection and structure,” McCann says. “What I find interesting is precisely the possibility of having different models that are consistent in spirit.”

Ultimately, that may be the strongest argument for the collection—not eyewear as an accessory, but eyewear as a tool runners stop thinking about once the miles begin.

“I want a pair of glasses that, once worn, almost cease to exist,” McCann adds. “They simply have to work, so I can remain completely immersed in the run.”