Rule 13 -- Mandatory Stops: A musher must personally sign in and out to start and complete all mandatory stops.
Twenty Four-Hour Stop: A musher must take one mandatory twenty-four (24) hour stop during the race. The twenty-four (24) hour stop may be taken at the musher’s option at a time most beneficial to the dogs. The starting differential will be adjusted during each team’s twenty-four (24) hour stop. It is the musher’s responsibility to remain for the entire twenty-four (24) hour period plus starting differential. The ITC will give each musher the required time information prior to leaving the starting line.
2013 Race Rules 7 of 15
Eight Hour Mandatory Stops: In addition to the mandatory twenty-four (24) hour stop, a musher must take one eight (8) hour stop on the Yukon River, including Shageluk in odd numbered years, and one eight (8) hour stop at White Mountain.
None of the) mandatory stops may be combined.