Irish gymnasts Kieran Behan and Eilis O'Reilly are dreaming of a summer in Brazil as they gear up for the final stage of Olympic qualification in Rio this weekend.

Behan became Ireland's second ever gymnast to compete at a Games in London four years ago, while 18-year-old O'Reilly could make history by becoming the first female gymnast to make it to the summer showpiece.

They'll strut their stuff at the Aquece Rio Test Event at the HSBC Barra Olympic Arena in the final hurdle for qualification.

Barry McDonald made the breakthrough back in 1996 when he earned a spot at Atlanta through the International Olympic Committee's wild-card route.

Behan and O’Reilly face their moments of truth on Saturday and Sunday respectively and will be required to perform on all apparatus if they hope to seal a return to Rio in August. 

Among the women, 35 or 36 places are still to be decided, while between 29 and 32 men’s spots are up for grabs.

The pair travelled to Rio on the 10 April after a short training camp in Portugal. Behan will compete in subdivision 3, starting on rings, on Saturday between 10.30pm and 1.0am Irish time.

O'Reilly will compete in subdivision 4, starting on bars on Sunday between 12.0am and 2.0am.