On Cloudmonster 2 Unisex Marathon Running Shoes – Undyed | Black

On Cloudmonster 2 – Unisex Marathon Running Shoe

The On Cloudmonster 2 is On’s most cushioned and most energy-returning road running shoe — the second generation of the Cloudmonster platform, rebuilt from the ground up with a redesigned CloudTec® Phase midsole architecture, an upgraded Helion™ superfoam formulation, and a more responsive ride profile that retains every gram of the original’s legendary cushioning presence while delivering a more propulsive, more dynamic step. A shoe built for long-distance training and marathon performance, for runners who want maximum cushion without sacrificing ground feel or forward momentum.

Colorway

This style is offered in the Undyed | Black colourway — the most compositionally pure and most performance-legible expression of the Cloudmonster 2’s design language. A clean undyed pearl-white engineered mesh upper — the white of unprocessed textile at its most neutral, neither warm nor cool, simply present — is structured by a single diagonal black-and-grey woven stripe running the full lateral length of the upper from the toe-box edge to the heel counter. The stripe carries the ON RUNNING wordmark in the same dark register, the brand’s identity rendered as a woven texture rather than a printed graphic — the text and the stripe as a single structural element rather than a decorative one. A large black On logo anchors the lateral midfoot above the stripe, the brand’s circular mark at performance scale. A small “on” text mark at the medial toe confirms the dual-face identity. Black collar binding and tongue edging frame the shoe’s opening in the same performance-dark register, the entry point as the upper’s most decisive dark accent. A clean white-and-grey speckled performance lace threads through black lace loops in a high-contrast functional detail. The white Cloudmonster 2 midsole extends the undyed upper’s white field below without interruption: the same clean white, now in the rebuilt square-aperture CloudTec® Phase architecture, upper and midsole reading as a single continuous white volume. A black outsole grounds the composition at contact point in the same dark register as the collar and logo above. White above. Black below and at every edge. The composition at its most direct, most legible, most performance-ready.

Key Features

• Redesigned CloudTec® Phase Midsole – Second-generation square-aperture cloud pods in a fully-redesigned layout — more responsive, more phase-connected, and more propulsive than the original Cloudmonster while retaining maximum cushioning volume
• Helion™ Superfoam – On’s proprietary high-rebound foam formulation — lightweight, temperature-stable, and energy-returning across long-distance training loads
• Diagonal ON RUNNING Woven Stripe – Full-lateral diagonal stripe in black-and-grey woven texture carrying the ON RUNNING wordmark — brand identity as structural element rather than decorative graphic
• Black Collar and Tongue Binding – Dark performance binding at collar and tongue — the upper’s most decisive dark accent, framing the entry point in the same register as the outsole
• White CloudTec® Phase Midsole – Clean white square-aperture midsole in unbroken continuity with the undyed upper — upper and midsole as a single white volume
• Engineered Mesh Upper – Undyed pearl-white engineered mesh with strategic overlays — lightweight, breathable, and structured for long-distance running
• Black Outsole – Durable rubber outsole in performance black — high-grip ground contact at every cloud-pod landing zone

Product Details

• Brand: On Running
• Model: Cloudmonster 2
• Gender: Unisex
• Use: Road running, marathon training, long-distance performance
• Closure: Lace-up
• Upper Material: Engineered undyed pearl-white mesh with diagonal black-and-grey ON RUNNING woven stripe, black collar/tongue binding, and black On logo
• Midsole: Helion™ superfoam with CloudTec® Phase square-aperture pods in white
• Outsole: Rubber in black

Size Guide

Please refer to the size chart before ordering. If you are between sizes or prefer a roomier fit, we recommend choosing the larger size.

Please select all required options before checkout. Colors may vary slightly depending on screen settings — please refer to product images for accurate representation.