Usually (road) bicycle racing isn't done on nationality, but between professional teams. These teams usually consist of riders from several different countries.
"How many African countries are competing in the olympic games this year?"
There will be 77 countries involved in the 2010 winter Olympics this year. the 2010 Winter Olympics will have 80 plus nations competing. the next Summer Olympics will be on 2012 and will be in London.
The athlete who competed at the 2012 Summer Olympics, who is also competing at the Paralympics, is Oscar Pistorius of South Africa.
71 nations compete in the commonwealth games
Brazil has one the brazilian waxing race every year, they are so bold going up against all other countries.
In a Formula 1 racing year there are usually 8 - 10 teams each with 2 drivers racing for every race. That makes around 16 - 20 drivers in each race The 2009 season has a total of 10 teams and 20 drivers competing in each race. This number may vary each season as teams may leave the F1 group or new teams may join the group.
There are 540 people on the GB team competing in all the games this year
There are many across the world in different countries. For example, there are several solar powered car races in the US.
there will be many countries contributing in the Olympics this year. such as Britain, America and Brazil.
15 - 18 women are in this 2012 Iditarod race as far as i know
Yes of course they are
The Caribbean island of Dominica has only two athletes competing in Beijing at the 2008 Olympics. It is the smallest team.