The Athletics competitions in the 1977 Bolivarian Games were held at Estadio Hernando Siles in La Paz, Bolivia, on October 15–29, 1977.

[1] Gold medal winners from Ecuador were published by the Comité Olímpico Ecuatoriano.

All results are marked as "affected by altitude" (A), because the stadium in La Paz is located at 3,637 metres (11,932 ft) above sea level.

Starting January 1, 1977, the International Association of Athletics Federations required fully automatic timing to the hundredth of a second for events up to 400 metres.

[3] Some results in the middle and long distance events that did not have fully automatic timing are marked (a).