The ASICS Fujispeed 4 is a high-performance trail running shoe designed to deliver maximum speed and efficiency on rugged terrain. Built with a lightweight construction, it’s ideal for runners who want to move fast without being weighed down, making it one of ASICS’ fastest trail models.

The upper features a jacquard mesh material that enhances durability while offering protection against abrasions from rocks and roots. This breathable fabric allows for excellent airflow, keeping your feet cool and dry during long runs. A traditional lacing system ensures a supportive fit, and a smart lace loop keeps the laces secure and out of the way, helping maintain focus without distractions.

In the midsole, ASICS has used FlyteFoam Blast Plus Eco cushioning, which combines lightweight responsiveness with excellent shock absorption. Its designed to rebound effectively after each stride, making it easier to train harder and longer. A Pebax Plate is integrated from the midfoot to the forefoot to guide the foot forward and boost propulsion, helping conserve energy and maintain speed, especially in the latter stages of a run.

For traction and stability, the outsole uses ASICSGRIP rubber, known for its excellent grip and durability. This tough rubber compound holds firm on various surfaces, ensuring control in all conditions. The 3.5mm lug pattern adds extra bite on slippery or uneven terrain, improving grip and overall efficiency on the trails.The Fujispeed 4 is built for trail runners seeking a fast, responsive, and durable shoe that performs well over challenging terrain and long distances.

Technical details

Ideal use:

Trail running, Running

Materials:

Upper: Engineered mesh upper

Cushioning: FF Blast Plus ECO

Outsole: ASISGRIP

Sockliner: EVA

Sandwiched Pebaxplate

Key features:

Asymmetrical lacing system

Lace eyelet construction

Smart lace loop

3.5mm lugs

Heel bolster

Breathable

Tech specs:

Gait type: Neutral

Heel drop: 5mm

Forefoot height: 29mm

Heel height: 34mm

Weight: 240g

Size and fit:

Standard width