(CNN)Here's a look at the Iditarod, the most well-known dogsled race in the world. It is named after the Iditarod Trail, an old mail and supply route, traveled by dogsleds from Seward and Knik to Nome, Alaska.
The race ranges from 975 to 998 miles long, based on whether the southern or northern route is being run. The length can also vary from year to year based on course conditions.
Most Consecutive Wins - Lance Mackey won four consecutive times from 2007-2010.
1925 - A diphtheria outbreak in Nome, Alaska, creates an emergency need for medical supplies to be delivered, and dogsledders make the journey. The current race commemorates this mission and partially follows the same route.