Year-by-year race discovery
2026 Multiday & Ultramarathon Calendar
Browse the source-checked 2026 editions in the Multiday Running directory, from fixed-time and backyard races to stage events and 200-mile mountain ultras. Events are grouped by month and linked to detailed race records.
- 2026 editions
- 30
- Active or upcoming
- 22
- Past editions
- 8
Active and Upcoming 2026 Races
Listed 2026 editions that are currently underway or still ahead, grouped by start month.
August 2026
Bigfoot 200
Cascade Mountains, Washington, USA · Mountain
A 207.9-mile nonstop point-to-point mountain ultra through the Cascades around Mount St. Helens, with 45,563 ft of climbing and 12 full aid stations.
Namib Race
Namib Desert, Namibia · Desert
A 250km, 6-stage self-supported ultramarathon through the Namib Desert — sand dunes, salt pans, dry riverbeds, and gravel plains. Finishes in the coastal town of Swakopmund.
SwissPeaks Odyssey
Le Bouveret, Valais, Switzerland · Mountain
SwissPeaks' longest alpine challenge, linking glacier country and Lake Geneva terrain across a technical 643km route for ultra-expert runners.
Sri Chinmoy Self-Transcendence 3100 Mile Race
Jamaica, Queens, New York City, New York, USA · Road
The world's longest certified road race: 3,100 miles around a measured city-block loop in Queens, with runners moving from 6:00 AM to midnight for up to 52 days.
SwissPeaks Legend
Brig to Le Bouveret, Valais, Switzerland · Mountain
A major SwissPeaks alpine ultra from Brig to Le Bouveret, with 397km of very technical mountain terrain and multiple life-base aid points.
September 2026
Dragon's Back Race
Conwy to Cardiff, Wales, UK · Mountain
A legendary 6-day mountain stage race along the spine of Wales, covering technical terrain from Conwy Castle to Cardiff with 16,400m of ascent.
TOR330 - Tor des Géants
Courmayeur, Aosta Valley, Italy · Mountain
The flagship TORX mountain ultra: a single-stage 330km loop through Italy's Aosta Valley, starting and finishing in Courmayeur with a 150-hour time limit.
Self-Transcendence 24 Hour Track Race
Tooting Bec Athletics Track, London, UK · Track
Incorporates the British 24-Hour Championships 2026. An IAU Bronze Label event limited to 55 experienced ultra-runners, held on the Tooting Bec Athletics Track for this edition.
Sydney's Backyard Ultra
St Ives Showground, Sydney, Australia · Trail
One of Australia's premier backyard ultra events. A last-person-standing race starting at 8:00 AM at St Ives Showground with a community-focused atmosphere.
Grand to Grand Ultra
Grand Canyon to Grand Staircase, Utah/Arizona, USA · Desert
A self-supported 6-stage, 7-day desert foot race from the Grand Canyon region toward the Grand Staircase, based out of Kanab, Utah.
Spartathlon
Athens to Sparta, Greece · Road
The historic 246km ultramarathon from Athens to Sparta, retracing the legendary run of Pheidippides in 490 BC. A 36-hour time limit. One of the most prestigious ultras in the world.
Ultra X Jordan
Wadi Rum, Jordan · Desert
A multi-stage trail race through the dramatic landscapes of Wadi Rum and the Jordanian desert. One of the Ultra X global adventure racing series.
October 2026
Moab 240
Moab, Utah, USA · Desert
A 241.8-mile desert ultra through Utah's canyons, slickrock, mesas, and mountain ranges around Moab, with 31,892 ft of climbing and a 112-hour cutoff.
Dutch Backyard Ultra
Zeewolde, Netherlands · Trail
The official Netherlands satellite event for the World Team Championship. Athletes compete as part of the Dutch national team on a course in Zeewolde.
World Backyard Ultra Team Championship
Bell Buckle, Tennessee, USA (and worldwide satellite sites) · Trail
The premier backyard ultra team event. National teams of 15 runners compete simultaneously at satellite sites worldwide. Each runner completes 4.167-mile loops every hour. The country with the most total loops wins.
International Ultramarathon Festival — Loutraki
Loutraki, Greece · Track
The 21st edition of this World Cup festival on a 400m tartan track. Features 48-hour, 24-hour, and 12-hour races in a supportive Mediterranean setting.
Salt Creek 24
Port Angeles, Washington, USA · Trail
A scenic 24-hour endurance race at Salt Creek Recreation Area on the Olympic Peninsula. Features a 1.3-mile looped course with 12-hour solo and relay options.
November 2026
The Last Desert
Antarctica · Mixed
The final event in the 4 Deserts Grand Slam. A multi-stage footrace on the Antarctic continent, accessed by expedition ship from Ushuaia, Argentina. The most remote race on the planet.
Beyond the Ultimate Desert Ultra
Namib Desert, Namibia · Desert
A 250km self-sufficient desert ultramarathon across five stages in the Namib Desert, with sand dunes, scrubland, heat, and tented camps.
December 2026
Desert Solstice Track Invitational
Phoenix, Arizona, USA · Track
An elite invitation-only 24-hour and 100-mile track race at Camelback High School. Limited to 25 runners with qualifying standards. Organized by Aravaipa Running.
Across the Years
Peoria, Arizona, USA · Road
A legendary multi-day running festival spanning New Year's Eve. Offers 6-hour to 6-day fixed-time races plus fixed-distance options. Organized by Aravaipa Running.
Earlier 2026 Race Editions
Past editions remain available as a research archive, grouped from the most recent start month backward.
June 2026
Six Days in the Dome — 48 Hour
Milwaukee, Wisconsin, USA · Track
Part of the Six Days in the Dome festival at the Pettit National Ice Center. A climate-controlled indoor 443m oval, ideal for setting records.
View verified race details →Six Days in the Dome — 6 Day
Milwaukee, Wisconsin, USA · Track
The premier indoor 6-day race at the Pettit National Ice Center. A 443m cushioned synthetic oval in a climate-controlled environment — a world-class venue for distance records.
View verified race details →Gobi March
Karakorum, Central Mongolia · Desert
The 20th edition of this 250km, 6-stage self-supported race through the Mongolian steppe. Part of the RacingThePlanet 4 Deserts series. Route passes through the UNESCO World Heritage Orkhon Valley.
April 2026
The Old Six Day
Pennsauken, New Jersey, USA · Road
One of the oldest 6-day races in the United States, held at Cooper River Park. A flat, looped course that evokes the Victorian 6-day pedestrianism tradition.
View verified race details →Marathon des Sables
Sahara Desert, Morocco · Desert
The 40th anniversary edition of the legendary 'Marathon of the Sands.' A 6-stage, 250km self-supported footrace through the Sahara Desert — widely considered the toughest foot race on Earth.
Calendar FAQs
Does this calendar include every 2026 ultramarathon?
No. It is a curated multiday-focused directory with event-specific official sources, not an exhaustive race registry.
Why are completed 2026 races still listed?
Keeping past editions visible makes the page useful for historical planning and course research. The event page clearly marks the edition as past.
How should I verify a 2026 race date?
Open the event record, follow its official organizer links, and confirm the current date, entry status, rules, and travel details before committing.
Keep Planning
24-Hour Race Calendar
Compare curated 24-hour events across every listed year and surface type.
Open resource →2026 Backyard Ultra Calendar
Focus on the backyard events and championship editions listed for 2026.
Open resource →Compare Race Formats
Understand how fixed-time, backyard, stage, and fixed-distance events differ.
Open resource →Current calendar: 2026 Calendar