The final three teams race for the finish line Portland, Oregon in the race's finale.

In the race's tenth leg, the teams continue their journey through Moscow, Russia, hoping to secure a spot in the final three. Andrew and Dan struggle to remain in the race when faced with a Speed Bump requiring rhythm. One team suffers a major blow to the

The remaining teams continue in the ninth leg of the race. Dan experiences difficulty during a military marching challenge. Nick and Starr encounter transportation difficulties that may cause them to fall behind.

The remaining teams travel to Kazakhstan and face chickens. Several teams race for a Fast Forward. Andrew and Dan have an argument.

The remaining teams continue on with the race, now heading to New Delhi, India.

The six remaining continue on with the race, this time heading to Old Delhi, India.

The remaining teams race to Siem Reap, Cambodia. Terence is pulled over by police on the way to a task. Kelly and Christy demonstrate obnoxious behavior towards over teams.

The eight remaining teams continue on with the fourth leg of the race, this time racing to New Zealand. Problems develop in Aja and Ty's relationship. A grueling challenge leaves Starr winded.

The remaining teams are instructed to fly from Fortaleze, Brazil to La Paz, Bolivia, but not before a rivalry between two teams heats up at the Pit Stop. The teams fly 1,200 miles and find themselves in area that is over 12,000 feet above sea level, leavi

The ten remaining teams take off from their Pit Stop in a seventh century fortress in Salvador, Brazil and receive a clue instructing them to fly to Fortaleza, Brazil. Tensions erupt when one team feels they secured an early flight for all teams and seeks

The Amazing Race 13: The next adventure comes to CBS beginning September 28, 2008. Casting began fall 2007 with final filming wrapped in May of this year.