The Most Intense Running Races in Portugal: Ultras, Backyard and 24H Challenges
Not every race is about pace.
Some races are about resistance, strategy and the ability to keep moving when fatigue takes over.
Portugal’s endurance calendar includes a growing number of extreme running events designed for athletes who want to test their physical and mental limits. From backyard ultras to 24-hour circuits and long-distance ultramarathons, these are races where consistency matters more than speed.
Here are some of the most intense running races in Portugal you should know.
Backyard Ultra races in Portugal
Backyard ultras are one of the toughest endurance formats.
Runners must complete a 6.7 km loop every hour until only one athlete remains.
There is no fixed finish line. The last runner standing wins.
Upcoming Backyard Ultras
Ficalho Backyard Ultra
📍 Vila Verde de Ficalho, Beja
📅 May 9, 2026
Backyard Trilho dos Cágados
📍 Vila Chã de Ourique, Santarém
📅 May 23, 2026
Bracarvs Backyard Ultra
📍 Vila Verde
📅 June 6, 2026
Lisboa Backyard Ultra
📍 Lisbon
📅 September 26, 2026
These races demand pacing strategy, energy management and mental resilience. Every hour is a new start.
24-hour running circuit in Portugal
In 24-hour races, athletes run continuously for 24 hours, aiming to accumulate the greatest possible distance.
These events are less about speed and more about consistency, fueling and fatigue management.
Circuito Nacional de 24 Horas
Zumub 24h Run – Mem Martins
📍 Sintra
📅 May 9–10, 2026
24H de P
📍 Santa Maria da Feira, Aveiro
📅 September 5–6, 2026
GRIFO 24H
📍 Lisbon
📅 November 14–15, 2026
Athletes can compete individually or in teams and accumulate distance across the circuit.
Ultramarathons in Portugal
Ultramarathons push runners beyond the marathon distance, often requiring hours or even days of continuous effort.
These events require strong aerobic endurance, nutrition strategy and mental toughness.
Upcoming Ultramarathons
Ultra Maratona Caminhos do Tejo
📍 Lisbon → Fátima
📅 June 5, 2026
📏 144 km / 58 km
PT281 Ultramarathon
📍 Belmonte → Proença-a-Nova
📅 July 15, 2026
📏 281 km
Terra de Gigantes
📍 Serra da Estrela → Nazaré
📅 January 14, 2027
📏 303.8 km
These are races designed for experienced endurance athletes looking for extreme challenges.
Find your next endurance challenge
Whether you are preparing for your first ultra or looking for your next extreme endurance test, Portugal offers a growing number of demanding races across different formats.
Explore these and many other races on RaceFinder and start planning your next challenge.
👉 Discover all events and register via RaceFinder
