Grand Raid des Pyrénées

How hard is the Tour des Lacs? The Tour des Lacs is one of the most vertically demanding 80-kilometre trail races in Europe. At 68.4 metres of elevation gain per kilometre, it ranks 47th out of approximately 390 trail races in the DiscoverTrailRaces database — top 12 percent for vertical density globally. The single largest descent covers 1,410 metres of drop and ranks 33rd. Just 12 percent of the course is flat; the remaining 88 percent is continuously ascending or descending. The official course notes specifically warn that numerous mountain-trail sections are difficult to run, particularly in the Néouvielle area and around the Hourquette Nère. Best runners finish in around 10 hours; the cutoff is 25 hours.

How much does the GRP Tour des Lacs cost to enter? The entry fee for the Tour des Lacs (80.9km) is approximately 126 euros, placing it in the 1.5 to 2 euros per kilometre price band. Registration is managed through NJUKO at njuko.com. The 2026 edition is sold out. The race has historically sold out, making early registration in the annual window essential. Check grandraidpyrenees.com for current entry and refund policy.

What is the Pic du Midi de Bigorre on the Tour des Lacs route? The Pic du Midi de Bigorre (2,877 metres) is the highest point on the Tour des Lacs route and one of the most iconic summits in the French Pyrenees. It is home to a celebrated astronomical observatory that has operated since the 19th century and sits within a designated dark-sky zone. Runners summit it at approximately kilometre 41 via the Col de Sencours aid station, then descend back before continuing into the Néouvielle natural reserve for the second major section of high lakes and passes.