Where is La Unión?

Jose Narciso Rovirosa28.3 km · 17.6 mi → Cocoyol35.7 km · 22.2 mi → Cacao38.3 km · 23.8 mi → Pucté43.4 km · 27.0 mi → Javier Rojo Gómez46.7 km · 29.0 mi → Álvaro Obregón50.6 km · 31.5 mi → Sabidos59.6 km · 37.0 mi → Nicolás Bravo62.5 km · 38.8 mi → Caobas65.1 km · 40.5 mi → Sergio Butrón Casas75.9 km · 47.2 mi → Carlos A. Madrazo76.8 km · 47.7 mi → Ucum77.3 km · 48.0 mi →

Akumal20.39693, -87.31444 → Alfredo V. Bonfil21.08776, -86.84706 → Álvaro Obregón18.29900, -88.65145 → Bacalar18.68109, -88.39333 → Benito Juárez21.02029, -87.04101 → Cacao18.19458, -88.69529 →