The deadline for Brazilian residents to enter the second phase of ticket sales for next year's Olympic Games is midnight on Sunday, the organisers said.
Residents of other countries can purchase tickets through authorised resellers listed in their regions, according to a Rio2016.com release.
About three million tickets are available in the second phase for events such as the individual rhythmic gymnastics final, men's football semi-finals and the men's tennis doubles semi-finals, Xinhua reported.
If there are more requests than tickets, a draw will be held to select successful applicants.
"We still have tickets available for almost all sports. Only triathlon, synchronised swimming, road cycling and marathon swimming are totally sold out," Rio 2016 ticketing director Donovan Ferreti said.
The remaining tickets will be sold on a first-come-first-served basis in October.