Daily Sweat lists 5 gyms in Puerto Rico where you can train on a day pass, across 1 city. 4 sell passes at the front desk and 1 let you buy online before you arrive. Chains with walk-in passes include HCOA Fitness (1 branch), LIV Fitness (1 branch).
Facilities: 1 with a sauna, 1 with a pool. Facility filters are on every city map.
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”.