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March 4-8, 2026Transgrancanaria
Gran Canaria, Canary Islands
A south-to-north traverse of Gran Canaria: 128 km from the lighthouse at the southern tip to the beach at Las Palmas. Sand dunes, volcanic peaks, and pine forests.
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Top races with distance, vertical gain, and quick access to maps and elevation profiles. Each race includes a free 16-week training plan tailored to the course elevation, plus GPX downloads and route previews in the planner.
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March 4-8, 2026Gran Canaria, Canary Islands
A south-to-north traverse of Gran Canaria: 128 km from the lighthouse at the southern tip to the beach at Las Palmas. Sand dunes, volcanic peaks, and pine forests.
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May 15-17, 2026Llanberis, Eryri (Snowdonia)
A technical UK mountain ultra weekend in Eryri (Snowdonia), with rocky ridges, slate country, exposed climbs, and demanding weather windows.
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Sun, May 17, 2026Zegama, Basque Country
The cathedral of mountain running. A brutal 42 km loop through the Basque mountains with 5,400 m of combined elevation change. Where the sport's legends are made.
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Sat, May 23, 2026Fuschl am See and Salzburg, Austria
A Salzkammergut UTMB World Series race weekend linking Fuschl, St. Gilgen, Lake Wolfgang, Schafberg, Zwolferhorn, and Salzburg-facing trails.
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Fri, May 29, 2026Val-de-Travers, Neuchâtel
A classic Swiss ultra through the Jura with multiple course options across steep forested ridges.
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June 12-13, 2026Tesserete, Ticino
A steep Ticino trail running weekend above Tesserete with technical forest, mountain trails, and big vertical for every distance.
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June 12-14, 2026Ordino, Andorra
A Pyrenean UTMB World Series weekend based in Ordino with steep mountain climbs, high passes, and technical descents across Andorra.
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June 12-14, 2026Samosir, Lake Toba, Indonesia
A tropical volcanic-caldera race weekend on Samosir Island, with humid climbs, forest tracks, lake views, and long exposed ridges above Lake Toba.
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June 18-20, 2026Garmisch-Partenkirchen, Germany
A major DACH alpine race weekend circling Zugspitze terrain from Garmisch-Partenkirchen, Ehrwald, Leutasch, Mittenwald, and Grainau.
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June 24-28, 2026Cortina d'Ampezzo, Dolomites
A spectacular 120 km loop through the Dolomites, starting and finishing in Cortina d'Ampezzo. Features dramatic rock towers, alpine meadows, and historic WWI paths.
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June 25-28, 2026Chamonix, Haute-Savoie
One of the most beautiful trail running festivals in the world, with 10,000 runners across 8 races over 4 days beneath Mont Blanc. The flagship 42 km with 2,540 m of climbing is joined by the epic 90 km ultra, the historic 23 km Cross, and a festive 10 km.
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June 26-28, 2026Valdivia, Chile
A temperate-rainforest race around Valdivia, with coastal mountains, muddy forest tracks, river country, and winter-season southern Chile conditions.
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Sat, June 27, 2026Olympic Valley → Auburn, California
The world's oldest 100-mile trail race. From the snowy Sierra Nevada to the scorching American River canyons. 100 miles, 5,500 m of climbing, and up to 43°C in the canyons.
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July 3-5, 2026Vielha, Val d'Aran
A major Pyrenean UTMB World Series event with high mountain loops and point-to-point routes through Val d'Aran's wild valleys, lakes, mines, and passes.
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July 9-11, 2026Corte, Corsica
A Corsican mountain race weekend from Corte with steep granite terrain, rugged valleys, and high technicality over short and ultra distances.
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Fri, July 10, 2026Silverton, Colorado
The hardest 100-miler in America. A high-altitude loop through the San Juan Mountains with 10,000+ m of climbing. Average elevation: 3,400 m. Passes above 4,000 m.
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July 10-12, 2026Verbier, Valais
A high-alpine Valais race weekend with steep UTMB World Series routes around Verbier, Grand St-Bernard, Panossiere, and the Grand Combin massif.
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July 15-19, 2026Grindelwald, Bernese Oberland
101 km through the dramatic Bernese Oberland beneath the Eiger North Face. A demanding loop with iconic Alpine scenery.
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July 17-18, 2026Samedan, Graubunden
A panoramic Engadin race weekend on high trails above Samedan, Zuoz, La Punt, Bever, and the Bernina views.
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July 24-26, 2026Campulung Moldovenesc, Romania
A Carpathian mountain race weekend in Bucovina with steep forest climbs, rocky ridges, and a broad set of UTMB World Series distances.
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Fri, July 24, 2026Coniston, Lake District
105 miles around the Lake District fells. A full circumnavigation of England's most iconic mountain landscape, passing through ancient valleys and over dramatic passes.
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July 24-25, 2026Snowbird, Utah
A steep Wasatch race weekend at Snowbird with high vertical density, technical mountain running, and a well-known US trail-racing brand.
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Sat, July 25, 2026Davos, Graubunden
A Graubunden trail running classic from Davos over high passes, alpine valleys, and fast forested returns.
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Jul 31 - Aug 2, 2026Quito, Ecuador
A high-altitude Andean race near Quito, linking cloud-forest climbs, volcanic terrain, and thin-air pacing from the capital region.
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August 1-2, 2026Sigulda and Cesis, Latvia
A Baltic trail weekend through Gauja National Park, linking forests, river valleys, sandstone cliffs, and historic Latvian towns.
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August 6-8, 2026Fieberbrunn, Tirol
A Kitzbuhel Alps trail weekend based in Fieberbrunn with steep alpine climbs, high ridges, and multiple UTMB World Series distances.
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August 7-9, 2026Fiesch, Valais
A demanding Oberwallis ultra weekend around Fiesch, Aletsch Glacier viewpoints, suspension bridges, and rugged alpine climbs.
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Sat, August 8, 2026Sierre → Zinal, Valais
The 'Race of the Five 4000ers': a classic 31 km mountain race from the Rhône Valley to the Val d'Anniviers with 2,200 m of climbing and views of five 4,000 m peaks. 53rd edition in 2026.
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August 14-16, 2026Mont-Tremblant, Quebec, Canada
A Laurentian mountain race weekend based in Mont-Tremblant, with forest climbs, ski-area gradients, technical trail, and humid late-summer conditions.
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Sat, August 15, 2026Sälen → Mora, Dalarna
90 km along the classic Vasaloppet trail through Swedish forests and over fells. From Sälen to Mora, following the route of King Gustav Vasa's historic ski journey.
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August 21-23, 2026Zermatt, Valais
A technical skyrunning weekend in Zermatt with Matterhorn views, high-altitude climbs, and demanding time barriers.
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Sat, August 22, 2026Leadville, Colorado
The 'Race Across the Sky' at 3,000+ m elevation. An out-and-back 100-miler through the Colorado Rockies, crossing Hope Pass (3,840 m) twice.
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August 22-23, 2026Whistler, British Columbia
A mountain trail weekend at Whistler Blackcomb with steep climbs, forest singletrack, alpine resort terrain, and high North American search demand.
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Fri, August 28, 2026Chamonix, Haute-Savoie
The world's most iconic ultra trail: a full loop around Mont Blanc through France, Italy, and Switzerland. 171 km with 10,000 m of elevation gain.
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Sat, September 5, 2026Interlaken → Kleine Scheidegg
A point-to-point marathon from Interlaken (567 m) to Kleine Scheidegg (2,061 m) beneath the Eiger, Mönch, and Jungfrau. 1,829 m of pure climbing.
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September 7-12, 2026Conwy Castle → Cardiff
A 6-day stage race along the mountainous spine of Wales. 380 km from Conwy Castle in the north to Cardiff Castle in the south. The ultimate UK mountain challenge.
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September 10-13, 2026Crans-Montana, Valais
A Swiss alpine UTMB World Series event linking Valais and Bernese Oberland trails around the Wildstrubel massif.
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September 11-13, 2026Dajingmen, Zhangjiakou, China
A Great Wall-region mountain race from Dajingmen, with steep historic-wall terrain, rocky climbs, and exposed ridgelines north of Beijing.
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September 11-13, 2026Ayder Village, Turkey
A high-mountain Black Sea race in the Kaçkar range, linking alpine villages, steep green valleys, and technical climbs above Ayder.
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September 11-13, 2026Taiping, Perak, Malaysia
A humid tropical ultra around Taiping and Perak, with rainforest climbs, runnable road-to-trail connectors, and heat management as a key race skill.
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Sat, September 12, 2026Snowbasin Resort, Utah
A Wasatch resort trail race at Snowbasin with runnable mountain grades, high-desert exposure, and approachable UTMB World Series distances.
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September 13-19, 2026Courmayeur, Aosta Valley
330 km with 24,000 m of elevation gain through the Aosta Valley. The longest single-stage ultra in the world. A test of endurance, sleep management, and mountain survival.
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September 17-20, 2026Paraty, Brazil
A coastal Atlantic Forest ultra from historic Paraty, with humid climbs, rainforest trails, beaches, and steep Serra do Mar terrain.
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September 18-20, 2026Natural Chimneys Park, Virginia
An Appalachian ultra weekend from Natural Chimneys with long climbs, ridge running, and established 100 mile and 100K demand.
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September 18-20, 2026Kranjska Gora and Bled, Slovenia
A Slovenian Alps UTMB weekend linking Kranjska Gora, Bled, Radovljica, and the Julian Alps foothills.
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September 25-27, 2026Nice, France
A sea-to-summit UTMB World Series weekend from the Mercantour and Riviera hill towns down to the Promenade des Anglais in Nice.
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October 1-3, 2026Copper Canyon, Chihuahua, Mexico
A Copper Canyon ultra weekend in northern Mexico, with big canyon descents, high-elevation climbs, remote trails, and dry mountain exposure.
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October 2-3, 2026Jeju Island, South Korea
A Korean island ultra around Jeju with volcanic terrain, Hallasan-area climbing, coastal humidity, and strong Asia-Pacific trail demand.
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October 9-10, 2026Big Bear Lake, California
A Southern California mountain ultra weekend around Big Bear Lake with altitude, forest trails, and large US trail-running awareness.
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October 16-18, 2026Mount Yun, China
A Chinese mountain ultra around Mount Yun, with steep forest climbs, temple-country ridges, and long technical descents across mixed trail and road.
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October 23-25, 2026Matera and Castellaneta, Italy
A southern Italian trail weekend through ravines, Mediterranean scrub, historic towns, and runnable autumn terrain between Matera and Puglia.
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October 30-31, 2026Mölle, Skåne
Scandinavia's biggest trail race on the dramatic Kullaberg peninsula. Coastal cliffs, beech forests, and rocky trails on the tip of Sweden.
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Oct 30 - Nov 1, 2026Mallorca, Balearic Islands
A Mediterranean island trail weekend across the Serra de Tramuntana with coastal starts, limestone climbs, and autumn ultra racing.
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November 6-8, 2026Guangyuan, Sichuan, China
A Sichuan trail race around the historic Shu Road corridor, with ancient-town starts, mountain tracks, forested climbs, and runnable ridges.
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November 13-15, 2026Lantau Island, Hong Kong
A coastal-mountain Hong Kong race across Lantau Island, combining steep stair climbs, country-park trails, ridgelines, and sea-level humidity.
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November 18-22, 2026Bariloche, Patagonia Argentina
A Patagonian lake-and-mountain race from Bariloche, with technical alpine terrain, forest trails, exposed ridges, and big views of Nahuel Huapi.
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December 10-12, 2026Al Hamra and Nizwa, Oman
A Hajar Mountains desert ultra with steep canyon climbs, high ridges, ancient villages, and technical rocky descents.
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February 13-14, 2027Rotorua, New Zealand
A Rotorua trail festival known for runnable volcanic terrain, lakes, forest trails, and globally recognized ultra distances.
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March 19-21, 2027Radda in Chianti, Tuscany
A Tuscan spring trail weekend through vineyards, olive groves, medieval villages, and the rolling climbs of Chianti.
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April 2-4, 2027Umag, Istria, Croatia
A long-running Adriatic ultra weekend crossing Istrian hill towns, coastal trails, and inland forest tracks before finishing by the sea.
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April 8-11, 2027Fruita, Colorado, USA
A Colorado desert trail festival on the Kokopelli-area terrain near Fruita, with runnable singletrack, red-rock exposure, and fast rolling climbs.
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April 8-10, 2027Tenerife, Canary Islands
A volcanic island ultra crossing Tenerife from coast and pine forest toward high mountain terrain around Teide and the northern finish.
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April 23-24, 2027Auburn, California
A historic Western States country race weekend along the American River canyons with high search demand and classic California ultra terrain.
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May 13-16, 2027Blue Mountains, New South Wales
A flagship Blue Mountains race weekend around Katoomba, Scenic World, cliffs, stairs, forest tracks, and large Australian trail-running fields.
TrailSplits combines official course data with terrain intelligence to help you prepare. Each race page includes a free 16-week training plan custom-built for the course elevation, downloadable GPX files, and interactive elevation profiles that show gradient zones, surface breakdowns, and estimated split times at different paces.
If you're new to trail running, start with a shorter distance (16–31 km). Look at the vertical gain, not just the distance: a 31 km race with 2,000 m of climbing is significantly harder than a flat road marathon. Use the filter chips above to narrow by ultra (100 km+), marathon-distance, or vertical-focused races.
Most Swiss trail races take place between June and October, when snow has melted from high passes. Early-season races (June) may still encounter snow patches above 2,500 m, while late-season events (September–October) offer cooler temperatures and stunning autumn colors. Check each race page for the exact date and course conditions.
Every race distance has a dedicated 16-week training plan with three tiers — Just Finish, Strong Finish, and Race It — so you can match the plan to your experience level. Plans are time-based (not pace-based), include weekly vert targets that build toward race-day demands, and feature deep links into the route planner to find matching local terrain for key workouts.