Set in the challenging terrain of the Retezat Mountains, this marathon invites adventurers to engage with a landscape fiercely itself, rugged and alive. Starting in Lupeni, Hunedoara County, the route stretches approximately 42 kilometers, pushing through dense coniferous woodlands, sharp ascents, and open alpine ridges. Elevation gain hovers around 2,400 meters, demanding both stamina and steady footing on rocky paths and uneven trails. Streams and rivers intersect the course, daring you to navigate their swift currents while providing crisp hydration opportunities.

The course begins in the industrial town of Lupeni, quickly moving into the embrace of forest, where the pines whisper and the earth gives way to jagged rocks. The route challenges runners with steep upward climbs toward Peleaga, the highest peak at 2,509 meters, rewarding perseverance with wide views over glacial lakes below, each their own a calm mirror reflecting the sky’s mood.

Expect sustained heart rates, particularly on the rocky sections where footing must be chosen with care. The weather can shift rapidly—fog rolling in thickly, or the sun suddenly breaking through, warming exposed ridges. Hydration is crucial; water points are present but spaced, so carrying enough water and electrolyte supplements is advised.

Training should include hill repeats and technical trail work to prepare for the varied terrain, from roots twisting beneath forest floors to loose scree on ascents. Footwear with solid grip and ankle support will reduce injury risk on the unpredictable terrain. Starting this race early in the day helps avoid afternoon thunderstorms common in summer.

The marathon isn’t simply a test against distance, but a negotiation with nature’s variety—each section a conversation with the land, where rivers push forward with determination and the forest holds its secrets reluctantly. It's an opportunity to match your resolve against a landscape that does not surrender easily but offers a rare reward: the intimate knowledge of Retezat’s wild core.