On Cloudmonster 2 Unisex Marathon Running Shoes – Black | Eclipse

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 Black | Eclipse colourway — the most tonally absolute and most chromatically committed expression in the Cloudmonster 2 range: a total black monochrome from collar to contact point, a shoe that reads as a single resolved dark volume with no chromatic interruption anywhere in the composition, the maximum-cushion platform at its most stealthy, most severe, and most deliberately invisible. Where the Black | White places a pure-white midsole beneath an all-black upper to create the range’s maximum contrast, the Black | Eclipse extends the black field below as well: midsole, outsole, and upper all resolved in the same dark register, the shoe’s full profile in a single continuous black, the CloudTec® Phase square-aperture pods now reading not as a technical architecture but as a graphic of negative space, the apertures as voids in a dark field rather than structural openings in a light one. The upper is rendered in a fully-saturated performance black: a deep, flat, cool black engineered mesh covering the complete upper from toe-box to collar, as absolute in its darkness as a performance textile can be. Against this black field, a large charcoal-grey On circular logo anchors the lateral midfoot — the same logo that reads as a bold white statement on the Black | White, here rendered in a deep charcoal that sits only fractionally above the black upper in chromatic value, a tonal mark that reveals itself at close range and dissolves into the upper at distance, the brand’s identity at its most self-effacing. A diagonal charcoal-and-medium-grey woven stripe runs the full lateral lower perimeter carrying the ON RUNNING wordmark in the same low-contrast dark register — the same architectural graphic device as across the Cloudmonster 2 family, here operating at near-zero contrast against the black ground, the brand declaration legible only when light finds the woven texture’s slight sheen. Dark charcoal laces and lace loops complete the upper in tonal continuity. The Cloudmonster 2 midsole below continues the black field without interruption: the same deep charcoal-to-black, the square-aperture CloudTec® Phase pods now in dark form, the cushioning architecture as present and as technically capable as in the lighter colourways but now absorbed entirely into the shoe’s dark total. A black outsole grounds the composition at contact point in the same register, the transition from midsole to outsole as seamless as the transition from upper to midsole: the shoe meeting the ground in the same colour it began with, the composition resolved from crown to contact in a single, unbroken dark field. Black above. Black below. Black at contact. The colourway at its most total, most committed, most absolute.

Key Features

• Total Black Monochrome – Upper, Midsole, and Outsole – The only Cloudmonster 2 colourway with a black midsole — upper, CloudTec® Phase pods, and outsole all resolved in the same dark field, the maximum-cushion platform at its most stealthy and most tonally absolute
• Tonal Charcoal On Logo – Large charcoal-grey On circular logo at near-zero contrast against the black upper — the brand mark at its most self-effacing, visible at close range, dissolving at distance
• Low-Contrast Diagonal ON RUNNING Stripe – Charcoal-and-grey woven stripe at near-zero contrast against the black ground — the brand’s wordmark legible only when light finds the woven texture’s slight sheen
• Redesigned CloudTec® Phase Midsole in Black – Second-generation square-aperture cloud pods in deep black — the cushioning architecture fully absorbed into the dark total, the apertures reading as graphic negative space rather than structural openings
• Helion™ Superfoam – On’s proprietary high-rebound foam formulation — lightweight, temperature-stable, and energy-returning across long-distance training loads
• Black Outsole – Seamless black rubber outsole — the midsole-to-outsole transition as invisible as the upper-to-midsole transition, the full profile in unbroken dark continuity

Product Details

• Brand: On Running
• Model: Cloudmonster 2
• Gender: Unisex
• Use: Road running, marathon training, long-distance performance
• Closure: Lace-up
• Upper Material: Engineered performance-black mesh with tonal charcoal On logo and low-contrast charcoal ON RUNNING woven stripe
• Midsole: Helion™ superfoam with CloudTec® Phase square-aperture pods in black
• 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.