In January 1925, a severe outbreak of diphtheria struck the isolated port town of Nome, Alaska. With the town’s supply of antitoxin expired and the port blocked by frozen sea ice, the local children faced certain death. Deep sub-zero winter temperatures and severe blizzards made flying impossible.
To save the town, officials organized a relay of 20 mushers and over 150 sled dogs to transport the life-saving medicine, known today as the 1925 Serum Run to Nome (or the “Great Race of Mercy”). The serum was carried by train from Anchorage to Nenana, where the dog teams took over for a grueling 674-mile journey through the wilderness.
Gunnar Kaasen, a Norwegian-born gold miner and experienced musher, was assigned the final stretches of the relay. His team was led by Balto, a black Siberian Husky who was generally considered a slow “working dog” in the kennel of famed breeder Leonhard Seppala, rather than a prized racer.
Kaasen and his 13-dog team picked up the serum at Bluff, Alaska, intending to hand it off to the next musher at Point Safety. However, the weather conditions deteriorated into a blinding blizzard with hurricane-force winds and whiteout conditions. The gale was so fierce that Kaasen could not even see the dogs closest to his sled.
Trusting his lead dog’s instincts, Kaasen gave Balto his head. Balto successfully navigated the frozen terrain, kept the team on the obscured trail, and even saved them from certain disaster in the drifting snow. When they reached the next checkpoint at Point Safety, the relief musher was asleep because he believed the storm had halted Kaasen’s progress. Knowing the urgency and with his team still running well, Kaasen made the decision to push through the final miles himself.
On February 2, 1925, at 5:30 a.m., Kaasen and Balto drove their team onto Front Street in Nome. The entire 674-mile relay had been completed in just over five days, a record-breaking pace that successfully delivered the antitoxin and halted the epidemic.
Because they were the team that crossed the finish line, Kaasen and Balto instantly became global media sensations. They toured the United States, starred in a short film, and were honored with a famous bronze statue of Balto in New York City’s Central Park, unveiled in December 1925.





































