20 events in Northwest Hills Planning Region, Connecticut

From big races to Saturday morning group runs—find marathon events and connect with the local endurance sports community.

• Iron Hike - Spring Olympus Mons Ultra Trail Marathon - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
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  Thu, Jun 04, 2026 at 12:00 AM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  152 Miles Marathon Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Spring Olympus Mons Ultra Trail Marathon Relay - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

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  • Download single event

  Thu, Jun 04, 2026 at 12:00 AM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  152 Miles Marathon Relay Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Spring Everest / 29029 Everesting Ultra Trail Marathon - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
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  Thu, Jun 04, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  61 Miles Marathon Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Spring Everest / 29029 Everesting Ultra Trail Marathon Relay - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

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  • Download single event

  Thu, Jun 04, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  61 Miles Marathon Relay Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Spring Denali Ultra Trail Marathon - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

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  Fri, Jun 05, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  43 Miles Marathon Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Spring Denali Ultra Trail Marathon Relay - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Fri, Jun 05, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  43 Miles Marathon Relay Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Spring Double Kuwohi Trail Marathon Plus - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
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  Sat, Jun 06, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  28 Miles Marathon Run Trail Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Spring Double Kuwohi Trail Marathon Plus Relay - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

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  • Download single event

  Sat, Jun 06, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  28 Miles Marathon Relay Run Trail Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Answer the Bell Ultra Trail Marathon - Full (Backyard Ultra Format) - 100+ Miles | 50,400' Elevation | 84-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
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  • Download single event

  Thu, Oct 01, 2026 at 12:00 AM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  61 Miles Marathon Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Olympus Mons Ultra Trail Marathon - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Thu, Oct 01, 2026 at 12:00 AM

  Description

  Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  152 Miles Marathon Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Olympus Mons Ultra Trail Marathon Relay - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Thu, Oct 01, 2026 at 12:00 AM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  152 Miles Marathon Relay Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Everest / 29029 Everesting Ultra Trail Marathon - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Thu, Oct 01, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  61 Miles Marathon Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Everest / 29029 Everesting Ultra Trail Marathon Relay - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Thu, Oct 01, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  61 Miles Marathon Relay Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Denali Ultra Trail Marathon - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Fri, Oct 02, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  43 Miles Marathon Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Denali Ultra Trail Marathon Relay - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Fri, Oct 02, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  43 Miles Marathon Relay Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Answer the Bell Ultra Trail Marathon - Basic (Backyard Ultra Format) - 28+ Miles | 14,400'+ Elevation | 24-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sat, Oct 03, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  61 Miles Marathon Run Trail Ultra Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Double Kuwohi Trail Marathon Plus - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sat, Oct 03, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  28 Miles Marathon Run Trail Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps
• Iron Hike - Fall Double Kuwohi Trail Marathon Plus Relay - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk [runsignup.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sat, Oct 03, 2026 at 12:00 PM

  Description

  Continue to the registration site for current registration prices. >> Register Now!

  IronHike Endurance Productions LLC is a US military veteran-owned business.

  28 Miles Marathon Relay Run Trail Walk

  Northwest Hills Planning Region, Connecticut, 06753, United States
  OpenStreetMap Google Maps