Largest cities
Bogotá 7,898,000 pop., 10,252,000 urban aggl.
Medellín 2,575,000 pop., 3,242,000 urban aggl.
Cali 2,238,000 pop., 2,640,000 urban aggl.
Barranquilla 1,334,000 pop., 2,133,000 urban aggl.
Bucaramanga 610,000 pop., 1,005,000 urban aggl.
Highest mountains
Sierra Nevada de Santa Marta 5,775 m (18,947 ft)
Ritacuba Blanco 5,410 m (17,749 ft)
Nevado del Huila 5,364 m (17,598 ft)
Longest rivers
Amazon 6,437 km (4,000 mi) total, Colombia has a very small stretch on the southern border
Caquetá / Japurá 2,415 km (1,501 mi) total, 1,200 km (746 mi) in Colombia
Rio Negro 2,250 km (1,398 mi) total, including Brazilian and Venezuelan sections
Orinoco 2,140 km (1,330 mi) total, including Venezuelan longest section
Putumayo 1,610 km (1,000 mi) total, 1,300 km (808 mi) in Colombia
Magdalena 1,528 km (949 mi)
Largest lakes
Ciénaga Grande de Santa Marta 4,280 km² (1,653 sq mi)
Lake Tota 55 km² (21.2 sq mi)
Largest islands
Margarita 2,100 km² (811 sq mi)
Gorgona 26 km² (10 sq mi)
San Andrés 26 km² (10 sq mi)