Isidro Lángara Galarraga stood out as a footballer from a very early age. His physique and skills made it possible for him to display a lethal acceleration over short distances, a remarkable aerial play, a stunning shot power and a ruthless goal-scoring instinct. As a footballer, Isidro Lángara was famed for his athleticism. Author of numerous "Impossible goals," he often scored from far out on the pitch. One particular famous occasion was on the opening matchday of the 1933–34 season when his Oviedo faced FC Barcelona winning the match 7–3. On that day, Lángara scored twice from set pieces around 50 metres out. When recounting the event, then Espanyol goalkeeper Lázaro Florenza noted "he scored an impossible goal, not once but twice". A few weeks later, Lázaro was himself victim of a similar free kick by Lángara. His physical stature was noted by teammates the day of his debut with San Lorenzo, when he was asked whether he was a footballer or a wrestler. At San Lorenzo, he became famous for his extremely powerful shot scoring often from long distance.

Lángara tenía un cuerpo atlético. Una fuerza muscular impresionante y una flexibilidad de elegido. Cintura estrecha. Buen equilibrio, capacidad funcional en las caderas para poder levantar las piernas como lo puede hacer un karateca. Así remataba, sin parar el balón, a cualquier altura. Manejaba las dos piernas, que no se sabía si Lángara era derecho o era zurdo