Photo: Backyard Ultra Curillas (opens in a new tab) / Source (opens in a new tab)Curillas, Valderrey (León)
Backyard Ultra Curillas
Saturday, 3 October 2026
Backyard loop (6.706 km/h)
6.706km D+ 90m
Backyard ultra format
Complete format guide: rules, gear and strategy
Race data
Terrain
Mixed
Difficulty
Elite
Distance
1 modalities
Backyard loop (6.706 km/h)
- Distance
- 6.706 km
- Elevation Gain
- D+ 90m
- Max Time
- 1h
| Modality | Distance | Elevation Gain | Max Time | Price |
|---|---|---|---|---|
| Backyard loop (6.706 km/h) | 6.706 km | D+ 90m | 1h | - |
Will your watch battery last the ~1 h of Backyard Ultra Curillas?Worked out for the longest course (6.706 km). See which watches reach the finish with GPS on and which die on the way.Check my watch Check my watchYour checklist for Backyard Ultra Curillas
What you need, category by category, with our #1 pick for this race. Tick what you already have.
0 of 6 ready
GPS watch
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)Garmin Forerunner 570
Full-color topo maps, a first for the Forerunner line
Downside: Shorter battery life than a Forerunner 965 with maps on
Gear
Bring at least 2–3 pairs of shoes to rotate and change socks often
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
Nike Ultrafly
ZoomX foam: exceptional energy return inherited from the Vaporfly
Downside: High price (190 EUR)
Nutrition
Use the rest time of each hour to eat and drink, not during the loop
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
Maurten Gel 100
Tecnología de hidrogel: excelente tolerancia gástrica
Downside: Precio elevado respecto a otros geles
Sun Protection
Apply sweat-resistant SPF and reapply every few laps
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
ISDIN Fotoprotector Fusion Water SPF 50+
Ultralight texture, feels invisible on skin
Downside: Small format (50 ml), may run short on ultras
Body Care
Anti-chafe on feet, underarms and groin before starting and during breaks
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
BodyGlide Original Anti-Chafe Balm
Easy-to-apply stick format, even with sweaty hands
Downside: Higher price than traditional petroleum jelly
Car Rental
Pick the car up in León or at the airport if you come from afar
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
DRIVALIA Alquiler de vehículos por Suscripción CarCloud Country Plus
Trip logistics
Registration, travel and insurance: what you should have sorted before race day.
Affiliate links: if you buy, we earn a commission at no extra cost to you.
Gear up for Backyard Ultra Curillas
Buying guides with the best value for money, picked for this kind of terrain.
Swipe to see all 4 comparisons
Historical weather
What to wear at 15 °C: guide and kit →
Typical weather for the race date (10-year average)
Temperature
10°C – 23°C
Average 16°C
Rain
13%
1.6 mm avg
Wind
16 km/h
max. average
Sunshine hours
10h
daily average
Gear recommendations
Bring thermal layers (low of 10°C)
Buff
Buff Thermonet
Buff tubular térmico con tecnología Primaloft. Retiene el calor corporal, ultraligero y polivalente: gorro, braga, cinta. Ideal para alta montaña.
Craft
Craft Pro Hypervent LS Wind Top
Thermal top with a windproof ripstop panel on the chest and a highly ventilated soft jersey back. Built for high-intensity sessions in cold, windy conditions, with long cuffs and thumb loops.
HANKER
HANKER Braga de Cuello Térmica
Unisex thermal seamless neck gaiter in Soft Air Plus fabric (97% polyester). Seamless fit designed for trail running, cycling, motorcycling and outdoor sports. A budget alternative to Buff for moderate cold.
Icebreaker
Icebreaker Merino 200 Oasis LS Crewe
Long-sleeve thermal top in 100% merino wool (200g). Natural temperature regulation, genuine multi-day odor resistance and a soft, non-itch handfeel from the fine merino yarn.
Odlo
Odlo Active Warm Eco
Camiseta térmica de manga larga con tejido reciclado y tratamiento antiolor. Regulación térmica activa, ideal como capa base en montaña.
Odlo
Odlo I-Thermic Longsleeve Mujer
Women's long-sleeve thermal top with insulating panels placed over cold-sensitive areas (lower back and kidneys). A mid-layer built for genuinely cold winter conditions, mountain outings or cross-country-style trail sessions.
ROCKBROS
ROCKBROS Pasamontañas Térmico y Cortaviento
Thermal windproof balaclava covering head, ears, cheeks and neck. Designed for cycling and motorcycling, it works just as well on windy, freezing trail runs.
Salomon
Salomon Agile LS Tee
Lightweight quick-dry polyester long-sleeve tee with underarm mesh, a side pocket and reflective details. Works as a standalone layer in mild cold or as a base layer under a windbreaker on colder days.
Salomon
Salomon Cross Run Tight
Mallas largas de trail con tejido elástico y transpirable. Cintura ajustable, bolsillo trasero con cremallera. Protección contra el frío y la vegetación.
Salomon
Salomon Cross Warm Glove
Guantes térmicos de running con palma antideslizante y puntas táctiles. Ligeros, cálidos y compatibles con bastones.
Under Armour
Under Armour ColdGear Armour Compression Mock
Compression thermal top with a dual-layer fabric: ultra-warm brushed interior and quick-dry exterior. Second-skin compression fit with stretch mesh panels at the back and underarms for ventilation without losing warmth.
Under Armour
Under Armour ColdGear Armour Compression Mock Hombre
Men's high-neck thermal compression top: brushed interior that holds heat and a quick-dry outer. Base layer for cold-weather runs.
Sun protection essential (10h sunshine, up to 23°C)
Forecast for 3 October
Weather forecast from Open-Meteo (may change until race day)
Backyard Ultra Curillas
The Backyard Ultra Curillas is a last-one-standing ultra-endurance race holding its second edition on 3 and 4 October 2026 at El Juncal, in Curillas (Valderrey, León). A friendly rural atmosphere, with a whole village behind every start, including after dark.
How last-one-standing works
Every hour, on the hour, the bell rings and a 6.706 km loop begins. You must finish it within the hour and be back on the start line for the next one. It isn’t about who runs fastest: it is about who best manages effort, mind and time. There is no fixed distance; the race ends when only one runner is able to complete one more lap.
A 6.706 km loop
The loop combines dirt roads, tracks, trails and some village streets with about 90 m of ascent per lap. The terrain is fast and not very technical, so the challenge is endurance rather than difficulty. The start is at 9:00 and there are solo and team categories (18 and over).
Strategy for many hours
- Comfortable pace: finish each lap with time to rest, eat and change.
- A rest base next to the start: chair, food, dry clothes and spare shoes.
- Headlamp and thermal clothing: October nights on the León plateau get cold.
- Look after your feet: anti-chafe, blister patches and spare socks make the difference.
León beyond the race
Curillas is a short drive from Astorga, with its cathedral, Gaudí’s Episcopal Palace and local food such as cocido maragato. If you travel far, also see León city. Browse more events in the Castilla y León region, prepare your nutrition plan and add this backyard to the race planner.
360Complete Pack
Backyard Ultra Curillas 2026 registration
RegistrationRegistration via DeporTicket, solo or in teams. Minimum age 18.
Tips
- •The announced deadline was 20 September: check the official website for remaining spots
- •Solo and team categories
- •Minimum age: 18
- •Start at 9:00 on Saturday 3 October
Where to stay for the Backyard Ultra Curillas
AccommodationCurillas is a small village. Astorga and La Bañeza concentrate the hotels a few minutes away by car.
Tips
- •Astorga is about 15 minutes away and has hotels and rural guesthouses
- •León city is about 45 minutes away
- •In a backyard you rarely need a room during the race: book for Sunday night
- •October is mid-season, but book ahead
Gear for the Backyard Ultra Curillas
GearA fast, non-technical loop, but the race can run for over 24 hours and October nights on the León plateau are cold.
Tips
- •Bring at least 2–3 pairs of shoes to rotate and change socks often
- •Headlamp with a spare battery: night falls mid-loop
- •Windproof layer and thermal clothing for the early hours
- •Folding chair and a tent or table for your base next to the start line
Which shoes for Backyard Ultra Curillas?
Which footwear fits based on the race's terrain and weather
Which GPS watch for Backyard Ultra Curillas?
Which watch has the battery to last based on your estimated finish time
Best Neck Gaiter (Buff) for Trail Running 2026: Comparison & Buying Guide
Comparison of the best neck gaiters for trail running in 2026: Buff Original, Midweight, Windproof, DryFlx, CoolNet UV+, Thermonet, HANKER and Salomon Merino. Which to pick based on sun, wind, cold or budget.
Best Thermal Base Layer for Trail Running 2026: Comparison & Buying Guide
The best thermal base layers for trail running in 2026: Odlo Active Warm Eco, Icebreaker Merino 200 Oasis, Craft Pro Hypervent, Under Armour ColdGear, Salomon Agile LS Tee and Odlo I-Thermic. Which to pick based on cold, sweat management, merino wool, compression or built-in wind protection.
Best Trail Running Gaiters 2026: 3-Way Comparison
Comparing the 3 best trail running gaiters in 2026: Salomon Trail Gaiters High, Salomon Trail Gaiters Low and TRIWONDER waterproof gaiters. Which to pick by terrain and budget.
Nutrition for the Backyard Ultra Curillas
NutritionEating every hour for many hours: rely on real food and use gels only as a supplement.
Tips
- •Use the rest time of each hour to eat and drink, not during the loop
- •Hot food at night: broth, soup or pasta
- •Test everything in training: a tired stomach rejects the unknown
- •Keep taking electrolytes even in cool weather
Getting to Curillas
TransportCurillas is about 55 km from León, next to Astorga. A car is the practical option.
Tips
- •From León: about 45 minutes by the A-66 and LE-420
- •From Astorga: about 15 minutes
- •León airport (LEON) is about 40 minutes away; Madrid is about 4 hours by car
- •No direct public transport to the village
Car rental for Curillas
Car RentalWith no direct public transport, a car makes it easier to arrive and carry all your gear.
Tips
- •Pick the car up in León or at the airport if you come from afar
- •The boot lets you carry a chair, a cooler and several changes of clothes
Sports insurance for the Backyard Ultra Curillas
InsuranceIn an ultra-endurance race with no fixed end, medical and accident cover is essential.
Tips
- •Federation licence or one-day insurance, as required by the organisers
- •Check that it covers long-duration and night races
- •The nearest hospital is in Astorga
Sun protection for the Backyard Ultra Curillas
Sun ProtectionIn October the sun still bites during the day on the plateau, and you spend many hours outdoors.
Tips
- •Apply sweat-resistant SPF and reapply every few laps
- •Don't forget lips, neck and ears
- •Cap or visor for the central hours of Saturday
Body care for the Backyard Ultra Curillas
Body CareMore than 24 hours of repeated impact: blisters, chafing and muscle fatigue are the enemy.
Tips
- •Anti-chafe on feet, underarms and groin before starting and during breaks
- •Blister patches at hand from the first lap
- •Recovery footwear for the rest minutes between laps
- •Massage and foam rolling afterwards: your legs will thank you
Frequently Asked Questions
- When is the Backyard Ultra Curillas 2026?
- On 3 and 4 October 2026, with the start at 9:00 from El Juncal in Curillas (Valderrey, León). It is the second edition.
- How does the backyard format work?
- Every hour on the hour, a 6.706 km loop starts. You must finish it within the hour and be back on the start line for the next bell. The last runner standing wins: there is no fixed final distance.
- What is the loop terrain like?
- Dirt roads, tracks, trails and a few urban sections around Curillas, with about 90 m of ascent per lap. It is fast and not very technical.
- Can I take part in a team?
- Yes, there are solo and team categories. The minimum age is 18.
- How do I register?
- Through DeporTicket, using the link on the official website. The announced deadline was 20 September, so check the website to see whether spots are still available.
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