MessengerIberica Backyard Ultra Masters
Event summary
The Ibérica Backyard Ultra Masters 2025 takes place on April 10, 2025, at 20:00, in Los Molinos, Madrid (Spain).
This second edition of the event follows the official Backyard Ultra format — an endurance challenge where participants must complete a 6.7 km loop every hour until only one runner remains.
The course features a mix of asphalt, paths, and trails with approximately 80 meters of elevation gain per loop, and is marked with reflective nighttime signage.
With 70 available slots, this event attracts some of the toughest endurance runners from Portugal and Spain. It also serves as a qualifier for the Portuguese and Spanish national teams, with the top 15 athletes from each country advancing to the Backyard Ultra World Team Championships in October 2026.
Runners can expect a welcoming yet competitive atmosphere, combining strategy, stamina, and mental resilience — a true test of endurance where there’s no finish line, only the last runner standing.
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Plan itInformation
Date: April 10, 2025
Start time: 20:00
Location: Los Molinos, Madrid (Spain)
Format:
Backyard Ultra — 6.706 km loop to be completed every hour (known as a “yard”).
Runners start a new loop exactly at the top of each hour. Failure to complete the loop within 60 minutes means elimination. The last remaining runner must complete one solo loop to be declared the winner.
Course details:
• Distance per loop: 6.706 km
• Elevation gain: 80 m per loop
• Surface: mixed terrain — asphalt, dirt roads, and trails
• Marking: reflective signage and flags
• Night loop: same course with additional reflective markings
Registration: Limited to 70 athletes
Registration deadline: Until all spots are filled
Eligibility: Open to runners 18+ years old
Qualification:
Top 15 athletes from Portugal and Spain will qualify for the Backyard Ultra World Team Championships (October 2026).
Timing and monitoring: Manual and electronic tracking per lap; total distance and laps completed will be recorded.
Facilities:
• Athlete area with rest and recovery zones between laps
• Camping and motorhome area near the start/finish
• Toilets and showers available on-site
Aid and safety:
Medical support available throughout the event. Athletes may bring their own crew to provide nutrition, rest, and pacing support between laps.
Prizes:
• Trophy for the overall winner (Last One Standing)
• Recognition for all participants with total loops and distance completed
Location
get directionsRaces
Backyard Ultra
Benefits
🎽 Athlete kit: bib number, timing tag, official event t-shirt, participant wristband
🏕️ Rest zone: athlete-only area between laps with hydration, snacks, and basic facilities
🥤 Aid stations: hydration and nutrition available between loops; athletes may bring personal supplies
🩺 Medical support: qualified medical staff and first aid on-site throughout the event
🛡️ Insurance coverage: included for all registered participants
🚿 Showers and toilets: available near the start/finish area
🎥 Official media: professional photo and video coverage of the event
📜 Participation certificate: includes total laps and distance completed
🏆 Last One Standing trophy: for the overall winner
💬 Community atmosphere: share the experience with endurance runners from Portugal and Spain
