On Cloudmonster 2 Unisex Marathon Running Shoes – Undyed | Flame

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 | Flame colourway. An undyed pearl-white base upper — the clean, slightly warm off-white of unprocessed textile, a white that reads as natural and material rather than bleached or optical — is intersected by a bold flame-orange colourblock panel running the full lateral lower perimeter of the shoe, from the toe-box edge along the midsole boundary to the heel, carrying the ON RUNNING wordmark in the same flame-orange register. The orange is a fully-saturated red-orange — the heat of combustion, vivid and immediate, the same high-energy orange that marks On Running’s most performance-forward colourways — rendered here as a wide architectural stripe that reads as both a speed graphic and a brand declaration. A rose-blush panel at the rear lateral quarter introduces a soft, warm pink counterpoint — the only element in the composition that softens the white-and-orange contrast, a feminine and considered accent at the heel. A large black On logo anchors the lateral midfoot with On’s identity at maximum scale. Black detailing throughout — collar binding, lace loops, lacing system — grounds the composition in a performance-ready dark accent. A high-contrast black-and-white speckled performance lace adds textural complexity to the lacing system. The white Cloudmonster 2 midsole extends the undyed upper’s white field below, the redesigned square-aperture CloudTec® Phase pods providing the shoe’s technical identity in the same clean white register. A black outsole grounds the composition at contact point.

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
• Flame-Orange Colourblock Stripe – Bold lateral lower-perimeter stripe in fully-saturated flame-orange carrying the ON RUNNING wordmark — a performance speed graphic at architectural scale
• Rose-Blush Rear Quarter Accent – Soft warm-pink panel at the lateral rear quarter — a considered feminine counterpoint to the white-and-orange primary composition
• Performance Speckled Lace – High-contrast black-and-white speckled lacing — textural complexity in a performance-functional detail
• 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 mesh — undyed pearl-white base with flame-orange colourblock overlay and rose-blush rear quarter panel
• 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.