High Intensity Interval Training Gyms & Fitness Studios in Castle Hill, NSW

Updated April 19, 2026 — Explore 3 places for High Intensity Interval Training workouts.

• F45 Training
  42/5 Gladstone Rd, Castle Hill NSW 2154, Australia
• Castle Hill Fitness & Aquatic Centre
  77 Castle St, Castle Hill NSW 2154, Australia
• Fernwood Fitness
  19 Victoria Avenue Units 8 & 9, Castle Hill NSW 2154, Australia