Mariana Pajón, twice the Olympic champion, was victorious on a home course in Colombia ©Getty Images

Home rider and back-to-back Olympic champion Mariana Pajón won the first of two International Cycling Union (UCI) BMX Supercross World Cup rounds in Bogotá.

Pajón burst into an early lead in the final and never looked in danger of being caught, leading home a Colombian one-two.

The winner crossed the line in 36.474sec and second-placed Gabriela Bolle was 1.586 adrift.

Russian Natalia Afremova came third.

In a dominant display, Pajón also won her heat and semi-final.

In the men's contest, France's Joris Daudet was victorious - like Pajón after taking an early lead in the final. 

Switzerland's Cedric Butti was second and Latvian Helvijs Brabis third.

Brabis' compatriot Kristens Krīgers suffered a heavy fall early on.

Romain Mahieu of France was fourth, as cyclists jostle for positions on their national teams for the Tokyo 2020 Olympics and the individual rankings.

Tomorrow's UCI BMX Supercross World Cup at the same venue is the last event offering Olympic ranking points.

France will be able to send three athletes to the Tokyo 2020 men's BMX race should they maintain their place in the top two of the national rankings, as appears likely - but Daudet was not among France's top-ranked trio at the start of the weekend.

None of the race winners from the first two World Cup legs travelled to Colombia.