The “super spike” era has largely been defined by high-stack, marshmallow-soft foams that can sometimes leave track athletes feeling disconnected from the surface. In this Diadora Mezzofondo Review, we look at an Italian alternative that takes a different path. Rather than trying to mimic a marathon racer on the oval, the Mezzofondo stays low, firm, and incredibly direct.
Model and Purpose
The Mezzofondo (Italian for “middle-distance”) is Diadora’s elite answer to the modern plated track spike. While the brand technically markets this for everything from 800m to 10,000m, our testing suggests a much tighter “sweet spot.”
- The Sweet Spot: 800m through 3,000m.
- The Specialty: This is a Mile and 1,500m weapon.
- The Stretch: It can handle a 5K for efficient forefoot strikers, but the aggressive nature might be taxing for a 10K.
Tech Specs: The Numbers
- Weight: 162g / 5.7 oz (Men’s US 9 / Unisex Sizing).
- Stack Height: 19mm (Low-profile, ground-connected).
- Drop: Near zero (Aggressively flat for track efficiency).
- Hardware: 6-pin removable configuration (6mm studs included).
- MSRP: $260.00
Key Features & Engineering
1. Nylon Air Mesh Upper The upper is a minimalist nylon air mesh that prioritizes breathability and zero-stretch lockdown. Unlike daily trainers, there is no “give” here. It fits like a true performance spike: snug, secure, and narrow. If you have a wider foot, we strongly recommend going up a half size. The sawtooth red laces are a standout feature—they create friction that prevents slipping, but they require a careful “dial-in” before you step onto the starting line.
2. Firmer Anima PBX Foam While the Mezzofondo uses the same Anima PBX (Pebax-based) foam found in Diadora’s road racers, the tuning here is intentionally firmer. You won’t find the “sink-in” feeling of a New Balance LDX or a Saucony Cheetah. Instead, the foam is high-density (approximately 0.19 g/cm³), providing a stable platform that doesn’t bottom out during the high-force phases of a middle-distance sprint.
3. Concave Plate Geometry What truly defines this spike is the carbon-filled plate. It features a pronounced concave shape—raised at the heel and toe-spring, but lower in the forefoot. This geometry acts as a constant “nudge” to stay on your toes. It reduces negative heel flex and improves gait efficiency, making the transition from landing to toe-off feel like a singular, rolling motion.
Track Performance: The 200m Litmus Test
The real-world magic of the Mezzofondo happens when you pick up the pace. During a recent track session, we ran 200m reps with a 30-second “ceiling.” Without intentionally pushing the pace, the first rep clocked in at 29 seconds. This perfectly illustrates the “momentum-building” nature of the shoe. It doesn’t launch you upward; it encourages the next step forward.
The ride feels “planted.” You feel the track, you feel the grip of the 6 pins, and you feel the snap of the plate. It makes acceleration feel like a natural consequence of your stride rather than a forced effort.
Competitive Comparisons
- vs. New Balance MDX: The Mezzofondo is firmer and sits lower to the track, appealing to those who want a more “old school” connected feel with modern plate benefits.
- vs. Saucony Endorphin Cheetah: The Cheetah is softer and “bouncier.” The Mezzofondo is for the runner who wants stability and a rolling sensation rather than a trampoline effect.
- vs. New Balance LDX: The LDX is far more forgiving and leans toward the 5K/10K specialist. The Mezzofondo is the aggressive choice for the 800m/1500m specialist.
Final Verdict
The Diadora Mezzofondo is a serious, premium spike with a clear identity. It’s for the forefoot striker who wants to feel fast, stable, and connected.
Choose this if: You race the 800m to 5K and want a high-durability, momentum-driven spike that excels at high turnover. Skip this if: You prefer a marshmallow-soft feel or are looking for a dedicated 10,000m spike where your calves might need more protection.
