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The VIKTOS Core Gym is a robust training shoe that’s particularly well-suited for athletes with flat and wide feet, offering ample space and a comfortable fit. It shines in heavy lifting and rigorous cross-training workouts, including CrossFit and rucking, thanks to its Parariggers™ sidewalls and hi-rebound EVA midsole, which provide excellent stability.


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What I Like About the VIKTOS Core Gym…

  • Well-Rounded Performance
  • Wide(r) Toe Box
  • Good for Thick Feet


What I Don’t Like About the VIKTOS Core Gym…

  • Not Great for Low-Volume Feet
  • Limited Colorways
  • Not Great for Longer Runs

Product Summary and Features

The VIKTOS Core Gym stands out as an exceptional training shoe, especially favorable for those with flat and wide feet, thanks to its spacious design and flat midfoot. Its Parariggers™ sidewalls and hi-rebound EVA midsole deliver outstanding stability for heavy lifting while maintaining enough versatility for CrossFit and other rigorous cross-training workouts. However, athletes with narrow or low-volume feet might find the shoe overly spacious, and it falls short for longer running sessions.

Despite these specific considerations, the Core Gym excels in providing a unique blend of stability, durability, and a wide fit, making it an excellent choice for those who often struggle to find a comfortable fit in conventional cross-training shoes. Its performance in lifting and various CrossFit activities is particularly notable, thanks to a stable, responsive midsole and robust build.

  • Adjustable lacing system
  • Textile upper with synthetic overlays
  • Supportive TPU sidewall for midfoot and heel stability
  • Dual-density midsole with airflow window for breathability
  • Traxion outsole
  • Upper contains a minimum of 50% recycled content
  • Read my VIKTOS Core Gym Review

VIKTOS’ Return Policy: You can return and exchange items within 30 days of purchasing them. Learn more here.

Testing the VIKTOS Core Gym for Leg Day

VIKTOS Core Gym Specs

  • Heel-to-Toe Drop: 4mm
  • Weight: 12.4 oz (size 10 men’s)
  • Stack Height: N/A
  • Removable Insole: Yes
  • Colors: 2 men/2 women (unisex)
  • Sizing: True to Size


Lifting Tests

    • Max Squat: 415 lbs. The stability is solid in this shoe and they can accommodate 400+ lb squats easily.
    • Max Deadlift: 525 lbs. The wider toe box, flatter midfoot, and lower stack height are great for big deadlifts.
    • Max Lunge: 225 lb walking lunge. Good stability and decent articulation through the forefoot.
    • Max Leg Press: 590 lbs. The outsole gripped the machine well and the wider toe box is great for toe splay.
    • TF2 Lifting Rating: 4.6/5

Versatility Tests

    • HIIT Workouts: Full-body circuits. This shoes works well for full body workouts and HIIT, but it does have a flatter feet which may be a turn off for some.
    • CrossFit WODs: Fran, Cindy, and more. This shoe performs surprisingly well for CrossFit. The upper is durable and it has a good blend of versatility and stability.
    • Running Tests: Sprints and 1.5 mile run. For sprints, this shoe can work but its spacious upper may be too much for some. For my 1.5 mile runs, this will be fine if you’re on treadmills or outdoors. On concrete, they may run a little too rigid.
    • TF2 Versatility Rating: 4.3/5


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