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Jessie Royer drives her team up the Yukon River as she nears the Iditarod checkpoint in Anvik, Alaska on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

John Baker drives his dog team up the Yukon River towards the Iditarod checkpoint in Anvik, Alaska on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Four-time Iditarod champion Jeff King takes care of his dogs after arriving in Anvik, Alaska, on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Musher Jake Berkowitz drives his dog team up the Yukon River after leaving the checkpoint in Anvik, Alaska, on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Iditarod musher Ken Anderson feeds his sled dogs in Anvik, Alaska on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Four-time Iditarod champion Martin Buser drives his dog team up the Yukon River after leaving the checkpoint in Anvik, Alaska, on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Four-time Iditarod champion Jeff King follows John Baker into the checkpoint in Anvik, Alaska, on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

John Baker arrives at the Anvik, Alaska, checkpoint during the Iditarod Trail Sled Dog Race on Friday, March 8, 2013. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Four-time Iditarod champion Jeff King crosses an island in the Yukon River about 3 miles from the checkpoint in Anvik, Alaska, during the Iditarod Trail Sled Dog Race on Friday, March 8, 2013. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Musher Ken Anderson arrives at the checkpoint in Anvik, Alaska, during the Iditarod Trail Sled Dog Race on Friday, March 8, 2013. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Musher Jake Berkowitz drives his dog team up the Yukon River after leaving the Anvik, Alaska, checkpoint in the Iditarod Trail Sled Dog Race on Friday, March 8, 2013. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

John Baker's dogs cross an island in the Yukon River as they near the Iditarod checkpoint in Anvik, Alaska on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Musher Ken Anderson drives his team up the Yukon River as he nears the Iditarod checkpoint in Anvik, Alaska on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Four-time Iditarod Trail sled dog race champion Jeff King arrives in Anvik, Alaska, Friday, March 8, 2013. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Musher Sonny Lindner arrives at the Iditarod checkpoint in Anvik, Alaska on Friday, March 8, 2013, during the Iditarod Trail Sled Dog Race. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Four-time Iditarod champion Martin Buser wipes his face after arriving first at the Yukon River in Anvik, Alaska during the Iditarod Trail Sled Dog Race, early Friday, March 8, 2013. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Trail Sled Dog Race )

Red king crab stuffed portobello mushrooms are served to four-time Iditarod champion Martin Buser after he arrived first at the Yukon River in Anvik, Alaska, during the Iditarod Trail Sled Dog Race, early Friday, March 8, 2013. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Trail Sled Dog Race )

Four-time Iditarod champion Martin Buser and his wife, Kathy Chapoton, eat a special meal prepared for the First to the Yukon award winner in Anvik, Alaska, during the Iditarod Trail Sled Dog Race, early Friday, March 8, 2013. Besides the meal, there are two more gifts for the first musher: $3,500, served on a gold pan, but all in single $1 bills, and a bottle of champagne. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Trail Sled Dog Race )

The lead group of Iditarod Trail Sled Dog Race mushers rest their dog teams in a wooded area at the historic checkpoint of Iditarod, Alaska, on Thursday, March 7, 2013. (AP Photo/Anchorage Daily News, Bill Roth) ( Iditarod Sled Dog Race )

Headlamps provide light for mushers and veterinarians working with sled dogs in the village of Nikolai, Alaska during the Iditarod Trail Sled Dog Race, Tuesday, March 5, 2013. (AP Photo/Anchorage Daily News, Bill Roth)

Allen Moore puts booties on his dog team before leaving the village of Nikolai, Alaska during the Iditarod Trail Sled Dog Race, Tuesday, March 5, 2013. (AP Photo/Anchorage Daily News, Bill Roth)

An Iditarod sled dog sleeps under a blanket at the McGrath checkpoint on Wednesday, March 6, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Musher Louie Ambrose gets hot water at the Iditarod checkpoint in McGrath on Wednesday, March 6, 2013, at Nikolai Airport in Nikolai, Alaska. (AP Photo/The Anchorage Daily News, Bill Roth)

Musher Matt Failor drives his team down the Kuskokwim River after leaving the Iditarod checkpoint in McGrath on Wednesday, March 6, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Veteran Iditarod musher Rudy Demoski prepares food for his dog team at the McGrath checkpoint on Wednesday, March 6, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Iditarod sled dogs from Mike Ellis rest at the McGrath checkpoint on Wednesday, Mar. 6, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Four-year-old Kayden Alexie pokes a fire with a stick as people gather in the village of Nikolai, Alaska, to watch and help with dog teams pulling into the checkpoint during the Iditarod Trail Sled Dog Race, Tuesday, March 5, 2013. (AP Photo/Anchorage Daily News, Bill Roth)

A musher and dog team rest between the Rohn and Nikolai checkpoints in Alaska during the Iditarod Trail Sled Dog Race on Tuesday, March 5, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Veteran Iditarod musher Kelley Griffin of Wasilla leaves the Athabaskan village of Nikolai, Alaska, on Tuesday, March 5, 2013. (AP Photo/Bill Roth, Anchorage Daily News)

Paige Drobny of Fairbanks tends to her dog team in the Athabaskan village of Nikolai, Alaska, during the Iditarod Trail Sled Dog Race on Tuesday, March 5, 2013. (AP Photo/Bill Roth, Anchorage Daily News)

Four-time champion Martin Buser heads down the trail on his way to the Nikolai checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Tuesday, March 5, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Angie Taggart rests in a musher tent at the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Matt Giblin puts booties on leader Kenya before leaving the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Competitors arrive at the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Brownie, foreground, a sled dog in Mike Surenant's team, rests at the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Kristy Berington, left, and twin sister Anna Berington, right, pack up their sleds as they prepare to leave the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Musher Sonny Lindner snacks his dogs at the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Ken Anderson puts booties on a lead dog, named Regret, at the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Ken Anderson departs the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Robert Bundtzen drives his team past cabins at Winterlake Lodge at the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Musher Cim Smyth arrives at the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Musher Anna Berington negotiates a steep drop off in the trail after departing the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Jessie Royer leaves the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Mike Ellis eats breakfast while resting his dog team at the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Jodi Bailey drives her dog team out of the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Scott Janssen heads down the trail after departing the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Sled dogs in Anna Berington's team negotiate a steep drop off in the trail as they depart the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Leaders in Jessica Hendricks's dog team negotiate a steep drop off in the trail after leaving the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, March 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Kristy Berington's team descends a steep section of trail outside the Finger Lake checkpoint in Alaska during the Iditarod Trail Sled Dog Race on Monday, Mar. 4, 2013. (AP Photo/The Anchorage Daily News, Bill Roth)

Paige Drobny of Fairbanks heads out of the gate at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Jessica Hendricks' team races down the trail at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Kristy Berington greets fans as she heads out of the gate at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. Berington has a twin who is also racing a team in the Iditarod this year. REUTERS/Nathaniel Wilder

Gerald Sousa's team charges down the trail at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Aliy Zirkle leaves the start gate at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. Zirkle finished second place in 2012 and is considered a top contender for the 2013 race. REUTERS/Nathaniel Wilder

The lead dogs of Cindy Gallea charge down the trail at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Cim Smyth's team races down the trail at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Louie Ambrose's team charges down the trail at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Peter Kaiser's team charges down the trail during the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

A dog from Jeff King's team leaps before it hits the trail at the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

A dog belonging to Nicolas Petit's team awaits the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

The lead dogs of Sonny Lindner charge down the trail after the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Musher Matt Failor greets well-wishers along the trail after the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Cindy Abbott's team charges down the trail after the re-start of the Iditarod dog sled race in Willow, Alaska March 3, 2013. From Willow, the race runs for almost 1000 miles as it crosses the state. REUTERS/Nathaniel Wilder

Musher Anna Berington, left, pulls her dog team up to the start line as Jessie Royer, right, talks to her leaders during the Iditarod Trail Sled Dog Race, Sunday, March 3, 2013, in Willow, Alaska. 65 teams will be making their way through punishing wilderness toward the finish line in Nome on Alaska's western coast 1,000 miles away. (AP Photo/The Anchorage Daily News, Bill Roth)

James Volek pulls one on his dogs out of a truck before the Iditarod Trail Sled Dog Race, Sunday, March 3, 2013, in Willow, Alaska. 65 teams will be making their way through punishing wilderness toward the finish line in Nome on Alaska's western coast 1,000 miles away. (AP Photo/The Anchorage Daily News, Bob Hallinen)

Katherine Keith puts booties on one of John Bakerís sled dogs before the Iditarod Trail Sled Dog Race, Sunday, March 3, 2013, in Willow, Alaska. 65 teams will be making their way through punishing wilderness toward the finish line in Nome on Alaska's western coast 1,000 miles away. (AP Photo/The Anchorage Daily News, Bob Hallinen)

Dogs wait to run in the Iditarod Trail Sled Dog Race, Sunday, March 3, 2013, in Willow, Alaska. 65 teams will be making their way through punishing wilderness toward the finish line in Nome on Alaska's western coast 1,000 miles away. (AP Photo/Rachel D'Oro)

A dog waits to run in the Iditarod Trail Sled Dog Race, Sunday, March 3, 2013, in Willow, Alaska. 65 teams will be making their way through punishing wilderness toward the finish line in Nome on Alaska's western coast 1,000 miles away. (AP Photo/Rachel D'Oro)

Veteran musher DeeDee Jonrowe poses with a member of her team at the ceremonial start of the Iditarod Trail Sled Dog Race, Saturday, March 2, 2013, in Anchorage, Alaska. 65 teams will be making their way through punishing wilderness toward the finish line in Nome on Alaska's western coast 1,000 miles away. (AP Photo/Rachel D'Oro)

A lead dog of musher Brent Sass races down 4th Avenue at the ceremonial start to the Iditarod dog sled race in downtown Anchorage, Alaska March 2, 2013. REUTERS/Nathaniel Wilder

The dogs of Brazilian musher Luan Ramos Marques charge out of the start gate on 4th Avenue during the ceremonial start to the Iditarod dog sled race in downtown Anchorage, Alaska March 2, 2013. REUTERS/Nathaniel Wilder

Ed Stielstra's team charges out of the start gate on 4th Avenue during the ceremonial start to the Iditarod dog sled race in downtown Anchorage, Alaska March 2, 2013. REUTERS/Nathaniel Wilder

The lead dogs of musher Richie Diehl race down 4th Avenue at the ceremonial start to the Iditarod dog sled race in downtown Anchorage, Alaska March 2, 2013. REUTERS/Nathaniel Wilder

A musher handler for Ed Stielstra's team hugs one of the dogs before lining up for the ceremonial start to the Iditarod dog sled race in downtown Anchorage, Alaska March 2, 2013. REUTERS/Nathaniel Wilder

The dogs of musher Ramey Smyth await for the ceremonial start to the Iditarod dog sled race in downtown Anchorage, Alaska March 2, 2013. REUTERS/Nathaniel Wilder

Michael Williams, Jr., greets fans along Cordova Street during the ceremonial start of the Iditarod Trail Sled Dog Race on Saturday, March 2, 2013, in Anchorage, Alaska. The competitive portion of the 1,000-mile race is scheduled to begin Sunday in Willow, Alaska. (AP Photo/Anchorage Daily News, Bill Roth)

Lead dogs on the team of Louie Ambrose run during the ceremonial start of the Iditarod Trail Sled Dog Race Saturday, March 2, 2013, in Anchorage, Alaska. The competitive portion of the 1,000-mile race is scheduled to begin Sunday in Willow, Alaska. (AP Photo/Dan Joling)

A musher drives they dog team down the start chute across Willow Lake during the Iditarod Restart in Alaska, Sunday, March 3, 2013. Sixty-five mushers hit the Iditarod Trail on a 1,000 mile journey across the Alaska wilderness to the race finish in Nome. (Bill Roth/Anchorage Daily News/MCT)

The lead dogs of musher Brent Sass race down 4th Avenue at the ceremonial start to the Iditarod dog sled race in downtown Anchorage, Alaska March 2, 2013. REUTERS/Nathaniel Wilder