Marathon des Sables vs. Empty Quarter Run: A Competitor's Comparison

Oct 27, 2025By Max Calderan
Max Calderan

Introduction to the Challenges

The Marathon des Sables and the Empty Quarter Run are two of the most grueling ultramarathons in the world. Both races test the limits of human endurance, pushing competitors to their physical and mental breaking points. While they share similarities, each race offers unique challenges and experiences that attract adventurers from around the globe.

The Marathon des Sables, often referred to as the "toughest footrace on Earth," takes place in the Moroccan Sahara Desert. Meanwhile, the Empty Quarter Run traverses the Rub' al Khali, or the Empty Quarter, the largest contiguous sand desert in the world, located in the Arabian Peninsula.

sahara desert

Terrain and Environment

Marathon des Sables

The Marathon des Sables covers roughly 250 kilometers over six days. Participants face a mixture of terrains, including sand dunes, rocky jebels, and dry riverbeds, all under the scorching Saharan sun. Temperatures can soar above 50°C, making hydration and heat management crucial.

Empty Quarter Run

In contrast, the Empty Quarter Run spans approximately 300 kilometers and is known for its vast, shifting sand dunes and remote landscape. Competitors must navigate through a more isolated environment, often without the same level of logistical support found in the Marathon des Sables.

desert dunes

Logistics and Support

Marathon des Sables

One of the hallmarks of the Marathon des Sables is its semi-self-sufficient format. Runners carry their own food and gear, while the organizers provide water rations and communal tents. This setup challenges participants to carefully plan their supplies and manage their weight throughout the race.

Empty Quarter Run

The Empty Quarter Run, on the other hand, is more self-sufficient. Competitors must not only carry their own food and gear but also navigate with little external support. This increases the need for strategic planning and self-reliance, especially given the remoteness of the route.

ultramarathon gear

Community and Experience

Marathon des Sables

The camaraderie among Marathon des Sables participants is legendary. With over 1,000 competitors from diverse backgrounds, the race fosters a unique sense of community. Shared meals and nightly gatherings in the bivouac create bonds that often last a lifetime.

Empty Quarter Run

The Empty Quarter Run offers a different kind of solitude and introspection. With fewer participants, runners often find themselves alone or in small groups, allowing for a more personal and reflective experience amid the vast desert expanses.

running group

Conclusion

Both the Marathon des Sables and the Empty Quarter Run are monumental challenges that test the limits of endurance athletes. While the Marathon des Sables offers a structured environment with a strong sense of community, the Empty Quarter Run provides a more solitary and raw experience. Whether you're drawn to the camaraderie of the Sahara or the isolation of the Empty Quarter, both races promise an unforgettable journey across some of the most extreme landscapes on Earth.