Vogel Family Biking 18,000 Miles On Pan-American Trail (VIDEO)

The Vogel family of Boise, Idaho embarked on an 18,000 mile trek from Alaska to the tip of Argentina two years ago. ABC News caught up with them 14,000 miles into the journey in Santa Cruz, Bolivia.

The family of four--the twin boys were 10 when this journey started--have taken the Pan-American Trail throughout the entire journey. Luckily for the kids, both of their parents are teachers, so they are keeping up with school work along the way, not to mention the fantastic geography lesson they're receiving on the road.