Uganda's Joshua Cheptegei finishes 8th in the men's 5000m final as Ronald Musagala comes in 11th in men's 1500m final.
"As a young kid you grow up looking forward to the big games," says the fastest man on Earth.
The US is leading the table with 11 gold and 32 medals in total.
"It's everything from phones, iPads and clothes to something as trivial as bed sheets."
More than nine million people live in Rio and towns around the rest of Guanabara Bay.
Korir says he is "excited to be the first-ever sitting Member of Parliament anywhere in the world to get the opportunity to run at the Olympics".
This will be the first appearance at the prestigious quadrennial event for both athletes.
The glamour of the games is now building up quite well. Athletes are looking forward to yet another occasion of the Olympic and Paralympic games. With...
"It would be my honour to represent the country in the Olympics," Pacquiao said in a statement to AFP.
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