On Tarifa is in Tarifa. Tap the map or the "Get directions" button to see the exact location and the route from your position.
On Tarifa's phone number is +34 686 21 10 56. Tap the "Call" button on this page to dial it directly from your phone.
On this listing you can see "Other gyms nearby" right below, sorted by proximity. You can also open the full gyms in Tarifa page for the complete map ranked by distance from your location.