Engineered for the toughest conditions and most demanding runners, the Topo Athletic Mountain Racer 4 Wide Men's Shoes are built to conquer technical trail terrain with speed, security, and comfort. Designed as a versatile option for both racing and high-mileage training, this model balances high cushion protection with a responsive underfoot feel, making it ideal for long distances over rugged ground. Weighing approximately 295 grams, the shoe features a 5 mm drop, delivering a confident blend of agility and impact protection. A new engineered mesh upper delivers a snug midfoot and heel fit while preserving Topo’s signature roomy toe box, allowing toes to splay naturally and reduce fatigue over time.

The performance-driven construction is supported by the resilient ZipFoam midsole, which offers more rebound than traditional EVA, and the Topo FKT insole, a non-absorbent, closed-cell TPU foam insert that enhances water drainage and midfoot energy return. Beneath it all, the trail-proven Vibram Megagrip outsole provides aggressive traction across dry, wet, or rocky surfaces. Additionally, the Mountain Racer 4 is gaiter compatible, offering enhanced protection against debris for technical adventures. Whether you're pacing ultras, tackling mountain races, or logging your weekly trail miles, the Mountain Racer 4 is a lightweight yet capable trail partner designed to keep you moving confidently. This wide-fit version ensures that you have the extra internal volume necessary for long-distance comfort without sacrificing the secure lockdown needed for technical performance.

What’s New?

  • Engineered Mesh: Performance-tuned for technical terrain and now contains 30% recycled materials.
  • Advanced FKT (Fastest Known Time) Insole: A new, fast-draining FKT insole designed to shed water quickly and maintain a lightweight feel in wet conditions.
  • Improved Gaiter System: For a more secure attachment point for the switchback gaiter, which is sold separately.

The Topo Mountain Racer 4 Wide Men’s Shoes also feature: 

  • Weight: At 295g (size 9 USM), this shoe offers a lightweight feel that doesn't compromise on rugged trail performance. 
  • 5mm Drop: Topo's highest available drop to access natural running with more heel cushioning.
  • Wide (2E) Fit: Specifically designed to accommodate higher-volume feet for a non-restrictive fit.
  • 33 x 28mm Platform: Delivers generous underfoot cushioning and protection.
  • Zip Foam: A proprietary midsole compound that is springier and more resilient than EVA.
  • No Rock Plate: Allowing for more natural flexibility while the stack height manages trail protection.
  • Anatomical Toe Box: Designed to let toes spread naturally and comfortably.
  • Vibram Megagrip: Provides reliable traction and durability on the most demanding trails.
Yes, it is classified as best for both trail running and racing, offering a balanced and responsive performance feel.
This is a neutral support shoe, designed for runners who do not require additional stability features.
The MTN Racer 4 is rated with high cushioning, providing significant impact protection for long-distance efforts.

Brand : Topo Athletic

SKU: TOPO-mountainracer4-w-m

Model # : mountainracer4-w-m

Gender : Mens

Shoe Type : Trail

Product Family : Mountain Racer

Drop : 5mm

Foot Type : Neutral

Cushioning : Maximum

Width : Wide

Vegan : Yes

Heel Stack Height : 33mm

Toe Stack Height : 28mm

Weight : 295g (size 9 USM)

Upper : Engineered Mesh

Midsole : Zip Foam

Outsole : Vibram Megagrip

Free shipping on orders over $140 to Australia*
Shipping on small orders (under $140) only $9.95
Shipping on all orders to NZ only $9.95
Express shipping to Australia & NZ only $15

Standard Shipping (AU) – FREE on orders over $140 and $9.95 on orders under $140. Orders are dispatched within 1 business day. Click here for shipping delivery times

Select ‘Standard Shipping – Auspost Only’ if you would prefer your parcel is sent with Auspost. Otherwise it will be shipped with any of our available carriers. Auspost Only shipping is not available on some very heavy/bulky orders.

Express Shipping (AU/NZ) – Need it faster? Express Shipping is available for $15. Express Shipping is not available on heavy/bulky orders. Orders placed before midday on business days are usually dispatched same day (otherwise within 1 business day). Delivery times in the table below.

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Manufacturing defects covered, replaced or repaired if soon after purchase.

  • If you have selected the wrong product/size for you, or want to exchange/return for any reason except for warranty or our error, this is referred to as a 'change of mind' return.
  • Not all products are eligible for change of mind returns (click here for excluded products).
  • Once you submit a Return Request, we will provide return instructions via email (along with a prepaid return label if applicable). Please wait to receive this before returning any items (Try 2 Anything excluded)
  • Change of mind returns can be resolved by your choice of exchange, full store credit, or a refund. Refunds are subject to a $19.95 admin fee.

For a full overview of our returns and warranty policies, see Returns and Warranties

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