Daily Sweat lists 4 gyms in Belize where you can train on a day pass, across 1 city. A single visit typically costs around 12.50 BZD, ranging from 10.00 BZD to 20.00 BZD. 4 sell passes at the front desk. Chains with walk-in passes include Xtreme Fitness (1 branch).
Cheapest day pass by city:San Ignacio from 10.00 BZD
Keeping it accurate: prices come from gym websites and travellers who checked in; each listing shows when it was last verified. Spot a change? Every gym page has “Suggest an edit”.