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🏃 Answer the Bell Full - 100 Mile + (100 Miler) - Complete a 1.2 mile, 600 foot loop every hour, on the hour, for up to 84 hours, until you can no longer answer the bell. - Elevation Endurance Ultra Backyard Trail Marathon - 100 + Miles | 84 Hour - IronHike (Iron Hike) Fall (October / Oct) - Solo - Mo — Thu 1 Oct 2026 · US   ·   🏃 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) - Relay - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day — Thu 1 Oct 2026 · US   ·   🏃 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. — Thu 1 Oct 2026 · US   ·   🏃 Denali - 40 Mile + (40 Miler) - if you can only spare your whole weekend - Elevation Endurance Ultra Trail Marathon - 43 + Miles | 48 Hour - IronHike (Iron Hike) Fall (October / Oct) - Relay - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day. — Fri 2 Oct 2026 · US   ·   🏃 Denali - 40 Mile + (40 Miler) - if you can only spare your whole weekend - Elevation Endurance Ultra Trail Marathon - 43 + Miles | 48 Hour - IronHike (Iron Hike) Fall (October / Oct) - Solo - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day. — Fri 2 Oct 2026 · US   ·   🏃 Bear Lake Ultra — Sat 3 Oct 2026 · US   ·   🏃 "Love Yourself First - Masquerade" 5K Domestic Violence Run & Walk — Sat 3 Oct 2026 · US   ·   🏃 10th Annual KJ's 5K for Mental Health and Animal Rescue 5K — Sat 3 Oct 2026 · US   ·   🏃 Arches Marathon and Half 13 Miles — Sat 3 Oct 2026 · US   ·   🏃 Arches Marathon and Half 9 Miles — Sat 3 Oct 2026 · US   ·   🏃 Arches Marathon and Half 50K — Sat 3 Oct 2026 · US   ·   🏃 Arches Marathon and Half 26 Miles — Sat 3 Oct 2026 · US   ·   🏃 Answer the Bell Full - 100 Mile + (100 Miler) - Complete a 1.2 mile, 600 foot loop every hour, on the hour, for up to 84 hours, until you can no longer answer the bell. - Elevation Endurance Ultra Backyard Trail Marathon - 100 + Miles | 84 Hour - IronHike (Iron Hike) Fall (October / Oct) - Solo - Mo — Thu 1 Oct 2026 · US   ·   🏃 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) - Relay - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day — Thu 1 Oct 2026 · US   ·   🏃 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. — Thu 1 Oct 2026 · US   ·   🏃 Denali - 40 Mile + (40 Miler) - if you can only spare your whole weekend - Elevation Endurance Ultra Trail Marathon - 43 + Miles | 48 Hour - IronHike (Iron Hike) Fall (October / Oct) - Relay - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day. — Fri 2 Oct 2026 · US   ·   🏃 Denali - 40 Mile + (40 Miler) - if you can only spare your whole weekend - Elevation Endurance Ultra Trail Marathon - 43 + Miles | 48 Hour - IronHike (Iron Hike) Fall (October / Oct) - Solo - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day. — Fri 2 Oct 2026 · US   ·   🏃 Bear Lake Ultra — Sat 3 Oct 2026 · US   ·   🏃 "Love Yourself First - Masquerade" 5K Domestic Violence Run & Walk — Sat 3 Oct 2026 · US   ·   🏃 10th Annual KJ's 5K for Mental Health and Animal Rescue 5K — Sat 3 Oct 2026 · US   ·   🏃 Arches Marathon and Half 13 Miles — Sat 3 Oct 2026 · US   ·   🏃 Arches Marathon and Half 9 Miles — Sat 3 Oct 2026 · US   ·   🏃 Arches Marathon and Half 50K — Sat 3 Oct 2026 · US   ·   🏃 Arches Marathon and Half 26 Miles — Sat 3 Oct 2026 · US
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Home  /  Race Calendar  /  International  /  2027 Denver Colfax Marathon - May 16
International 227 days away

2027 Denver Colfax Marathon - May 16

📅 Sun 16 May 2027 📍 Denver 📏 Marathon 🗺 Marathon

The 2027 Denver Colfax Marathon offers a vibrant urban experience set against the stunning backdrop of the Rocky Mountains. Known for its diverse course that winds through Denver's iconic neighborhoods, this marathon attracts both seasoned runners and newcomers alike, showcasing the city's spirit and community support.
THE COURSE
The marathon route takes participants through scenic parks, historic districts, and along the picturesque banks of the South Platte River. With a mix of flat stretches and gentle inclines, runners can enjoy a well-balanced terrain that provides both challenge and beauty, making it a memorable race.
THE EXPERIENCE
The atmosphere at the Denver Colfax Marathon is electric, with enthusiastic crowds cheering on participants, live music along the route, and a strong sense of camaraderie among runners. In addition to being a competitive event, it supports local charities, fostering a sense of purpose as participants contribute to their communities.
WHO SHOULD RUN IT
This marathon is ideal for those who appreciate a lively urban setting paired with breathtaking views, as well as for runners looking to support a cause while enjoying a well-organized event. Both first-time marathoners and experienced athletes will find the Denver Colfax Marathon to be a rewarding challenge.

Don’t miss out on the chance to be part of this iconic race — register now and prepare for an unforgettable marathon experience in Denver!

📅 Full Race Calendar →
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