If you are looking for races in Cornwall, Connecticut, you have come to the right place. Cornwall has a growing running scene with 22 races listed in our directory, including 0 upcoming events in 2026. Whether you are lacing up for your first 5K or chasing a new personal record, there is something here for every runner.
Upcoming Races in Cornwall, Connecticut
Here is a look at the top upcoming races in Cornwall this year. We update our listings weekly so you always have the most current information.
IronHike Olympus Mons Ultra | Run, Power Hike, Walk. | Mohawk Mountain, Connecticut | Fall | October | Solo – 72,590 feet of elevation gain, possibly more than any endurance event of its kind. – 100 Mile + Elevation Endurance Ultra Trail Marathon – 152 + Miles – 84 Hour – We are redefining race day. Tags: Iron Hike, 100 Miler, Oct, CT, Cornwall, New England, Loop, Ski Slope, Skratch Labs, Hardest Ultra, Hard Ultra
Date: October 1, 2026
Distance: Marathon
Get ready to tackle the ultimate elevation challenge at the Olympus Mons Ultra, featuring a staggering 72,590 feet of elevation gainpossibly the most of any endurance event! Read full details →
IronHike Olympus Mons Ultra | Run, Power Hike, Walk. | Mohawk Mountain, Connecticut | Fall | October | Trail Buddy Flex Relay (2 Mountain Athletes) – 72,590 feet of elevation gain, possibly more than any endurance event of its kind. – 100 Mile + Elevation Endurance Ultra Trail Marathon – 152 + Miles – 84 Hour – We are redefining race day. Tags: Iron Hike, 100 Miler, Oct, CT, Cornwall, New England, Loop, Ski Slope, Skratch Labs, Hardest Ultra, Hard Ultra
Date: October 1, 2026
Distance: Marathon
Get ready to tackle an epic autumn adventure in Connecticut where you’ll conquer over 100 miles through some seriously steep terrainwe’re talking nearly 73,000 feet of elevation gain, which might just be the gnarliest climb in the ultra world! Read full details →
Iron Hike – Fall Kuwohi Trail Half Marathon Plus Relay – 15 Miles | 7,140′ Elevation | 12-Hour | Run, Hike or Walk
Date: October 3, 2026
Distance: Half Marathon
Head over to the registration page to check out today’s pricing and secure your spot for this challenging adventure! IronHike Endurance Productions LLC is proudly owned and operated by US military veterans, bringing their dedication and experience to every event they create. Read full details →
IronHike Kuwohi | Run, Power Hike, Walk. Solo | Start Here | Mohawk Mountain, Connecticut | 15 Miles | 7,140′ Elevation | 12-Hour | Fall October – 7,140 feet of elevation gain across 12 laps on Mohawk Mountain Trail, the entry point for first time Mountain Athletes. – Elevation Endurance Half Marathon – We are redefining race day. Tags: Iron Hike, Trail Half Marathon Plus, Half Marathon, 15 Miler, Oct, CT, Cornwall, New England, Loop, Ski Slope, Beginner Endurance
Date: October 3, 2026
Distance: Half Marathon
Head over to the registration page to check out today’s pricing and secure your spot for this epic adventure! This challenging 15-mile journey through Cornwall, CT features a stunning 7,140 feet of elevation gain that you’ll tackle over 12 hourswhether you prefer running,… Read full details →
Iron Hike – Fall Double Kuwohi Trail Marathon Plus Relay – 28+ Miles | 13,685′ Elevation | 24-Hour | Run, Hike or Walk
Date: October 3, 2026
Distance: Marathon
Head over to the registration page to check out what this epic adventure costs you, then sign up for your spot! This challenging event is proudly run by a US military veteran-owned company that knows how to deliver an unforgettable experience. Read full details →
Iron Hike – Fall Double Kuwohi Trail Marathon Plus – 28+ Miles | 13,685′ Elevation | 24-Hour | Run, Hike or Walk
Date: October 3, 2026
Distance: Marathon
Head over to the registration page to check out the latest pricing for this epic 28+ mile adventure through Cornwall, CT, where you’ll tackle over 13,000 feet of elevation gain on the Kuwohi Trailperfect whether you want to run, hike, or walk your way through the 24-hour… Read full details →
Iron Hike – Fall Answer the Bell Ultra Trail Marathon – Basic (Backyard Ultra Format) – 28+ Miles | 14,400’+ Elevation | 24-Hour | Run, Hike or Walk
Date: October 3, 2026
Distance: Marathon
Head over to the registration page to check out the latest pricing and secure your spot in this epic 24-hour challenge! Whether you’re planning to run, hike, or walk through the beautiful Cornwall, CT trails, you’ll be tackling 28+ miles with over 14,400 feet of elevation gain… Read full details →
Everest – 60 Mile + (60 Miler) – just over 29029 feet of elevation gain up and down – Everesting Elevation Endurance Ultra Trail Marathon – 61 + Miles | 72 Hour – IronHike (Iron Hike) Fall (October / Oct) – Solo – Mohawk Mountain, Connecticut (CT) – Run, Hike or Walk with us as we redefine race day.
Date: October 1, 2026
Distance: Marathon
Get ready to tackle an incredible elevation challenge at Mohawk Mountain in Cornwall, Connecticut this fallyou’ll conquer over 29,000 feet of vertical gain and loss across 60+ miles in a solo adventure that lets you run, hike, or walk at your own pace within a 72-hour window. Read full details →
Why Run in Cornwall?
Running events in Cornwall offer a mix of community fun runs, charity 5Ks, and competitive road races throughout the year. The local running community is active and welcoming to runners of all levels — from first-timers to seasoned racers. Many of these events benefit local charities and organizations, making race day about more than just your finish time.
Find More Races in Connecticut
Cornwall is just one part of a thriving Connecticut running scene. If you want to explore more events across the state, check out our full race listings for Connecticut — we track every upcoming running event from 1 mile fun runs to full marathons.
Get Ready to Race
Found a race you want to run? The next step is making sure you are properly trained for it. Whether you are a first-timer aiming to finish or a veteran chasing a PR, having the right training plan makes all the difference.
Take our free 3-question training plan quiz and get matched to the right plan for your fitness level in under a minute. We will send it straight to your inbox so you can start training today.
Good luck out there — see you at the finish line in Cornwall!
