Great Britain's Shanaze Reade misses out on an Olympic medal as she finishes sixth in women's final.
Colombia's Mariana Pajon secures the gold medal in the women's BMX with Sarah Walker of New Zealand taking silver and Laura Smulders of the Netherlands bronze.
Reade narrowly missed out on the Olympic title four years ago when she crashed attempting a daring late overtake in the final run.
You can watch the full session in our interactive video player.
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