The World's Most Iconic Trail Runs: A Guide for Serious Runners

Road running is a sport. Trail running is a lifestyle. The best trail runs in the world are not just routes — they are journeys through landscapes that challenge your body and expand your understanding of what running can be.

UTMB Course, Chamonix, France

The Ultra-Trail du Mont-Blanc course circumnavigates the entire Mont Blanc massif through France, Italy, and Switzerland. The full loop covers 171 kilometres with 10,000 metres of elevation gain. Even if you never race it, running sections of this course is a pilgrimage for trail runners.

The Bovine to Champex-Lac section offers alpine meadows with Mont Blanc views. The climb from Courmayeur over Grand Col Ferret is brutally beautiful. Every section has its own character, and the infrastructure of mountain refuges means you can run it in stages over several days.

Grand Canyon Rim-to-Rim, Arizona

Running from the South Rim to the North Rim of the Grand Canyon is 34 kilometres of vertical desert drama. You descend 1,400 metres to the Colorado River, cross it, and climb 1,700 metres to the North Rim. The fastest runners do it in under four hours. Most take considerably longer.

The canyon reveals geological history with every step — two billion years of rock strata exposed as you descend. The temperature swing from rim to river can exceed 20 degrees Celsius. It is demanding, humbling, and one of the great running experiences on the planet.

Tour du Mont Blanc Trail, Alps

The full Tour du Mont Blanc is a 170-kilometre trek, but trail runners regularly complete it in sections or as a continuous push. The trail passes through France, Italy, and Switzerland, crossing high passes with views of glaciers, granite spires, and alpine valleys.

The infrastructure is excellent — mountain huts, well-marked trails, and small towns at regular intervals. This makes it accessible for runners who want a multi-day mountain experience without full wilderness self-sufficiency.

Kalalau Trail, Kauai, Hawaii

The Kalalau Trail runs 18 kilometres along the Na Pali Coast, one of the most dramatic coastlines on Earth. The trail clings to cliffs above the Pacific, passes through tropical valleys, and ends at Kalalau Beach — a place so remote it can only be reached by trail or by sea.

The running is technical and exposed, with stream crossings and narrow cliff sections. Permits are required and limited. The combination of tropical landscape and serious mountain terrain makes Kalalau unique among trail runs.

Drakensberg Grand Traverse, South Africa

The Drakensberg Grand Traverse covers 220 kilometres along the escarpment of South Africa's highest mountain range. The route follows the border with Lesotho at altitudes above 3,000 metres, crossing rivers, negotiating mountain passes, and traversing some of the most remote terrain in southern Africa.

This is an expedition-level trail run that requires navigation skills, self-sufficiency, and the fitness to cover 40-plus kilometres per day on rough terrain. The reward is solitude on a scale that barely exists in European or North American trail running.

Laugavegur Trail, Iceland

The Laugavegur Trail runs 55 kilometres from Landmannalaugar to Thorsmork through a landscape that looks like another planet. Rhyolite mountains striped in orange and green, steaming geothermal vents, black sand deserts, and river crossings through glacial valleys.

Trail runners typically complete Laugavegur in a single day, though the terrain is challenging enough that many take two. The midnight sun season means you can run in perpetual daylight — an experience that fundamentally alters your sense of time and distance.

The Inca Trail, Peru

Running the Inca Trail to Machu Picchu is part athletic challenge, part historical journey. The 43-kilometre route climbs to 4,215 metres at Dead Woman's Pass before descending through cloud forest to the Sun Gate overlooking Machu Picchu.

The altitude is the primary challenge — even fit runners feel the effects above 3,500 metres. Permits are required and limited to 500 people per day, including porters. The combination of Incan ruins, Andean scenery, and the physical challenge of altitude makes this a trail run unlike any other.

Why These Trails Matter

Each of these runs offers something that a road race or a treadmill never will: the integration of physical effort with extraordinary landscape. They are the runs that stay with you — not as times on a watch but as experiences that shape how you see the world.

The runners who get the most from these trails are the ones who connect with local athletes who know the conditions, the hidden sections, and the stories behind the routes.

Apply for access to ZealZag and connect with trail runners who call these mountains home.