Nike ACG Ultrafly Trail HF5668-400 Baltic Blue Court Blue Trail Racing Shoes

• Exact SKU HF5668-003: Identifies the Light Silver / Jade Horizon edition of the updated Nike ACG Ultrafly Trail.
• Trail Racing Focus: Developed specifically for responsive running and racing over mixed and technical trail terrain.
• ZoomX Foam: Nike's highly responsive cushioning provides energy return while maintaining a stable trail-running feel.
• Full-Length Carbon Flyplate: Supports efficient forward movement while retaining additional flexibility compared with the original Ultrafly.
• Vibram® Megagrip: Durable outsole compound delivers enhanced traction, particularly across wet or uneven terrain.
• Strategic Trail Lugs: Added grip supports both uphill and downhill running.
• Water-Draining Mesh: Lightweight breathable upper is designed to handle changing trail conditions.
• Lightweight Performance: Approximately 287 g in Men's US 10 according to Nike.

Responsive Trail Cushioning

The Ultrafly Trail uses Nike ZoomX foam, designed to provide high energy return while maintaining enough stability for off-road running.

Updated Foam Platform

Nike describes this latest ZoomX implementation as offering durability, softness and responsiveness specifically suited to trail running.

Unwrapped Heel

The ZoomX foam is left exposed around part of the heel, helping Nike maximize the responsive character of the platform.

Long-Distance Performance

The combination of soft, responsive foam and trail-focused stability makes the shoe suitable for longer trail efforts as well as faster racing.

Carbon-Fiber Construction

A carbon-fiber Flyplate runs through the full length of the shoe.

Reduced Stiffness

Nike specifically reduced the plate stiffness compared with the original Ultrafly Trail.

Improved Trail Control

Greater flexibility helps the platform adapt more naturally when runners encounter irregular or technical terrain.

Smooth Transition

The Flyplate works together with ZoomX foam to support a smooth and responsive forward transition.

Trail-Specific Grip

Nike equips the Ultrafly Trail with a Vibram® Megagrip outsole for durable off-road traction.

Wet Terrain

Vibram Megagrip is specifically used to enhance grip when trail surfaces become wet or slippery.

Strategic Lugs

Strategically positioned outsole lugs help provide traction during both uphill and downhill running.

Weight Optimization

The outsole configuration is designed to retain trail grip without adding unnecessary weight across the entire sole.

Lightweight Mesh

The upper uses lightweight mesh construction to reduce bulk while maintaining airflow.

Breathable

Open textile construction helps release heat during longer trail running sessions.

Water Drainage

Nike specifically designs the upper to allow water drainage after running through puddles, streams or wet terrain.

Trail Durability

Despite its lightweight construction, the upper is engineered to withstand the demands of trail running.

Light Silver

Pale silver-grey tones form the primary base of the upper, giving the shoe a technical and understated appearance.

Jade Horizon

Muted green detailing introduces an outdoor-inspired contrast to the neutral upper.

Safety Orange

Bright orange accents add visibility and reinforce Nike ACG's technical outdoor aesthetic.

Anthracite

Dark grey components add depth and practical contrast around key areas of the design.

Search-Friendly Terms

Customers may also search for this pair as Nike Ultrafly Trail HF5668-003, Nike ACG Ultrafly, Ultrafly Trail Light Silver, Ultrafly Jade Horizon, Nike carbon trail shoes, Nike ZoomX trail shoes, or Vibram Nike trail running shoes.

Trail Racing

Nike positions the Ultrafly Trail primarily as a trail racing shoe, with its lightweight responsive construction optimized for moving quickly off-road.

Technical Terrain

The carbon plate, Megagrip outsole and trail-specific lug pattern help support more demanding terrain.

Climbing

Strategic lugs help generate traction as the runner moves uphill.

Descending

Outsole grip is also positioned to help maintain control during downhill sections.

Long-Distance Trails

ZoomX cushioning and the revised flexible carbon plate are designed to remain comfortable and responsive as mileage increases.

Trail-racing shoes generally work best with a secure fit, particularly around the heel and midfoot, because the foot moves in multiple directions over uneven terrain.

Start with your usual Nike running size and consider your foot width, running socks and preferred amount of toe room.

Technical Outdoor

Trail shorts, lightweight shells and ACG-style technical apparel naturally match the Ultrafly Trail.

Grey

Grey trousers and running apparel complement the Light Silver base.

Olive & Green

Earth-tone green clothing coordinates with the Jade Horizon details.

Black

Black technical pants provide a clean contrast and make the brighter accents more visible.

Safety Orange Accents

Small orange accessories or performance apparel can coordinate with the Safety Orange details without overwhelming the shoe.

Allow Mud to Dry

After trail use, allow heavy mud to dry before brushing it away from the upper and outsole.

Clean Mesh Gently

Use a soft brush, microfiber cloth and diluted mild footwear cleaner rather than aggressive scrubbing.

Clean Outsole Lugs

Remove stones and compressed dirt from the Vibram outsole after trail sessions.

Avoid Harsh Chemicals

Strong cleaning agents may affect mesh, foam, adhesives and outsole materials.

Do Not Machine Wash

Machine washing may affect the ZoomX foam, carbon plate structure and bonded components.

Air Dry Naturally

Dry in a ventilated shaded area away from direct heaters or prolonged high temperatures.

What is the exact model?

This product references the Nike ACG Ultrafly Trail.

What is the SKU?

The exact style code is HF5668-003.

What is the official colorway?

Nike lists Light Silver / Jade Horizon / Safety Orange / Anthracite.

Is it a trail running shoe?

Yes. Nike categorizes the Ultrafly Trail as a trail racing shoe.

What cushioning does it use?

The shoe uses Nike ZoomX foam.

Does it have a carbon plate?

Yes. It uses a full-length carbon-fiber Flyplate.

What outsole does it use?

Nike uses a Vibram® Megagrip outsole with strategically positioned trail lugs.

Is the upper breathable?

Yes. Nike describes the mesh upper as lightweight, durable and breathable.

Can the upper drain water?

Yes. The upper is specifically designed to allow water to drain after contact with puddles or streams.

What is the heel-to-toe drop?

Nike specifies an 8.5 mm drop.

How much does it weigh?

Approximately 287 g / 10.1 oz in Men's US 10.

Available through HYPEKIXK. Select your preferred size before checkout and review all product details before placing your order.

Mesh texture, stitching, printed details, panel alignment and color shade may show minor variation between individual pairs or production batches.

Light Silver, Jade Horizon, Safety Orange and Anthracite tones may appear slightly different depending on lighting, photography and display settings.

Technical specifications on this page reference the original Nike ACG Ultrafly Trail HF5668-003 design and Nike's published product information.

Product names, trademarks, style codes and proprietary technology names are used for identification and informational purposes.

HYPEKIXK is an independent retailer and is not affiliated with, endorsed by or an authorized retailer of Nike.

This is a non-retail / non-authentic product referencing the original design. QC photographs are provided before shipment so customers can review the exact pair before dispatch.