The Serum Run: Race Against the Storm

A limited series based on the 1925 Serum Run in Alaska, hosted by Alex Stein. On this episode: Race Against the Storm 

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This conversation discusses the 1925 Serum Run, a dog sled relay that delivered diphtheria antitoxin to Nome, Alaska. The conversation highlights the challenges faced by the mushers and their dogs as they battled extreme weather conditions to save lives. The story focuses on the determination and bravery of mushers Leonard Seppala and Gunnar Kassin, as well as the role of the lead dog Balto. The conversation also touches on controversies surrounding the relay and its portrayal in the media.


  • The 1925 Serum Run was a remarkable dog sled relay that delivered life-saving diphtheria antitoxin to Nome, Alaska.
  • Mushers and their dogs faced extreme weather conditions, including temperatures below freezing, strong winds, and blizzards.
  • Leonard Sepal and his lead dog Balto played a crucial role in the relay, covering more miles than any other team.
  • Gunnar Kassin’s determination and perseverance in finding the lost antitoxin box demonstrated the incredible dedication of the mushers.


00:00: Introduction and Window Installation Advertisement
01:10: Introduction to Dog Works Radio and the 1925 Serum Run
03:15: The Start of the Serum Run
04:24: Leonard Sepal and Balto
05:37: Gunnar Kassin and the Storm
07:35: Gunnar Kassin’s Determination
09:11: The Final Stretch to Nome
11:50: The Arrival in Nome and Controversy
13:26: Promotions and Conclusion