Ultramarathons in Duluth

3 upcoming races. See all races in Duluth or ultramarathons worldwide.

• 2027 - NorthShore Inline Marathon - Northern Lights Foundation Kids Sprint: RUN
  Sep 17, 2027 · 321.9 km
• 2027 - NorthShore Inline Marathon - Northern Lights Foundation Kids Sprint: INLINE SKATE
  Sep 17, 2027 · 321.9 km
• 2027 - NorthShore Inline Marathon - Combined 39.3 Mile Skate
  Sep 18, 2027 · 63.3 km