Photo: Noche Roja Boñar (opens in a new tab) / Source (opens in a new tab)Boñar
Las 100 Millas de Boñar – Noche Roja
Saturday, 3 July 2027estimated date
Half marathon (3 laps)
20km D+ 570m
Mountain marathon (7 laps)
47km D+ 1330m
50 miles (12 laps)
80km D+ 2280m
100 kilometers (15 laps)
100km D+ 2850m
100 miles (24 laps)
161km D+ 4560m
Backyard ultra format
Complete format guide: rules, gear and strategy
Race data
Terrain
Trail
Difficulty
Elite
Distance
5 modalities
Half marathon (3 laps)
- Distance
- 20 km
- Elevation Gain
- D+ 570m
- Max Time
- 3h
Mountain marathon (7 laps)
- Distance
- 47 km
- Elevation Gain
- D+ 1330m
- Max Time
- 7h
50 miles (12 laps)
- Distance
- 80 km
- Elevation Gain
- D+ 2280m
- Max Time
- 12h
100 kilometers (15 laps)
- Distance
- 100 km
- Elevation Gain
- D+ 2850m
- Max Time
- 15h
100 miles (24 laps)
- Distance
- 161 km
- Elevation Gain
- D+ 4560m
- Max Time
- 24h
| Modality | Distance | Elevation Gain | Max Time | Price |
|---|---|---|---|---|
| Half marathon (3 laps) | 20 km | D+ 570m | 3h | - |
| Mountain marathon (7 laps) | 47 km | D+ 1330m | 7h | - |
| 50 miles (12 laps) | 80 km | D+ 2280m | 12h | - |
| 100 kilometers (15 laps) | 100 km | D+ 2850m | 15h | - |
| 100 miles (24 laps) | 161 km | D+ 4560m | 24h | - |
Will your watch battery last the ~34 h of Las 100 Millas de Boñar – Noche Roja?Worked out for the longest course (161 km). See which watches reach the finish with GPS on and which die on the way.Check my watch Check my watchYour checklist for Las 100 Millas de Boñar – Noche Roja
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 →(opens in a new tab)Polar Grit X2 Pro
AMOLED display with sapphire glass
Downside: Modest smartwatch battery (10 days)
Gear
Headlamp mandatory during all nighttime hours — carry a spare
Done, you already have it
View on Amazon →(opens in a new tab)
Hoka Speedgoat 7
Max Hoka cushioning: protects your legs over long distances
Downside: High stack: less stable for those who want more ground feel
Nutrition
Bring your own nutrition strategy: official aid is basic
Done, you already have it
View on Amazon →(opens in a new tab)
Maurten Gel 100
Tecnología de hidrogel: excelente tolerancia gástrica
Downside: Precio elevado respecto a otros geles
Sun Protection
Apply sunscreen before the start and reapply every 2-3 laps while the sun is up
Done, you already have it
View on Amazon →(opens in a new tab)
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 balm on your usual friction points before starting
Done, you already have it
View on Amazon →(opens in a new tab)
Buff CoolNet UV+
UPF 50+: blocks 98% of UV radiation
Downside: UV protection decreases with wear after many washes
Car Rental
Pick up in León city or Asturias airport, depending on where you're coming from
Done, you already have it
View on Amazon →(opens in a new tab)
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.
Las 100 Millas de Boñar – Noche Roja requires mandatory gear: get it sorted early
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
12°C – 25°C
Average 18°C
Rain
37%
1.1 mm avg
Wind
15 km/h
max. average
Sunshine hours
14h
daily average
Gear recommendations
Bring a waterproof jacket (37% chance of rain)
Asics
Asics Gel-Trabuco 14 GTX
A best-selling beginner trail shoe: GEL cushioning, good stability and a waterproof GORE-TEX membrane. Versatile and reliable for training on mixed terrain in any weather.
Berghaus
Berghaus Paclite 2.0 GTX
Waterproof jacket with a Gore-Tex Paclite membrane (around 330 g). Fully waterproof with taped seams, fixed adjustable hood, storm flap behind the zip and cuff adjustment. Packs down small in a vest. Heavier than a pure running hardshell, but it meets the waterproof-breathable membrane requirement in race rules and is the affordable route into Gore-Tex.
Brooks
Brooks Cascadia 20 GTX
The Cascadia 20 with a GORE-TEX membrane: stability and protection for rocky mountain terrain, keeping the foot dry on cold, rainy days.
Gore Wear
Gore Wear C5 GORE-TEX Glove
Glove with a fully waterproof, windproof GORE-TEX membrane and light insulation. The pick for running in snow, sleet or heavy rain while keeping your hand dry.
Gore Wear
Gore Wear M GORE-TEX Thermo Glove
Warmer variant of the Gore Wear C5 GORE-TEX: the same fully waterproof, windproof membrane, with extra thermal lining for intense cold on top of snow or rain. The pick when the problem isn't just water, but water AND hard cold at once.
Gore Wear
Gore Wear R7 GTX Shakedry
Chubasquero Gore-Tex Shakedry ultraligero (110 g). Impermeabilidad total sin membrana interior, altamente transpirable. El referente para corredores de montaña.
Nike
Nike Pegasus Trail 5 GORE-TEX
The best-selling gateway trail shoe: comfortable, cushioned and versatile for moving from road to trail. Waterproof GORE-TEX version, perfect for beginners and easy runs on mixed terrain.
Salomon
Salomon Bonatti Pro Waterproof Glove
Lightweight waterproof glove built for running, not just standing still in the snow: a waterproof membrane with more dexterity and less bulk than a thick membrane glove, for sustained rain without giving up handling gels or poles.
Salomon
Salomon Bonatti WP
Chaqueta cortavientos impermeable ultraligera (135 g). Costuras selladas, capucha ajustable y ventilación trasera. Se pliega en su propio bolsillo.
Salomon
Salomon Speedcross 6 GTX
The Speedcross 6 with a GORE-TEX membrane: the same aggressive 5 mm lugs for mud and soft ground, now waterproof for winter, rain and snow.
Sealskinz
Sealskinz Waterproof Lightweight Glove
Lightweight waterproof glove from a brand that specializes in outdoor sport waterproofing. A solid middle ground between a thin windproof glove and a thick membrane glove: genuinely waterproof without the bulk or price of the Gore C5.
TRIWONDER
TRIWONDER Polainas Impermeables Trail
Waterproof, breathable low gaiters for trail running, hiking and mountain use. Under-shoe strap and adjustable elastic band. A budget-friendly alternative to premium technical brand gaiters.
Sun protection essential (14h sunshine, up to 25°C)
Forecast for 3 July
Weather forecast from Open-Meteo (may change until race day)
Noche Roja: Las 100 Millas de Boñar
Noche Roja is a backyard ultra born in Boñar, a town in the Montaña Oriental Leonesa, built around a simple idea: you’re not competing against the others, you’re competing against your own desire to quit. It’s a fully free event thanks to sponsorship from the Boñar town council, and it’s registered with DUV (Deutscher Ultramarathon-Verband), so results count toward each runner’s international ultra-distance record.
A challenge of loops: the backyard format
On Saturday, July 4, 2026, runners face a circular course of 6.7 km that must be completed every hour, on the hour, for up to 24 laps in 24 hours. Whoever completes 24 laps within time is declared the winner; if no one manages it, the winner is whoever outlasts everyone else. Within that same loop, the organizers mark five milestones for those chasing a shorter challenge: half marathon (3 laps), mountain marathon (7), 50 miles (12), 100 kilometers (15), and the full 100 miles (24 laps). A headlamp is mandatory during all nighttime hours, and trekking poles and headphones are banned on the course.
The Alto Porma by night
The course runs through a circuit “of great beauty” in the Alto Porma, deep in the Montaña Oriental Leonesa. The real challenge isn’t just the accumulated distance, but the temperature swing between the heat of the early July laps and the cold that sets in after dark in this mountain area. Managing clothing layers, a spare headlamp, and your own nutrition strategy — official aid stays basic — is key to lasting until sunrise. Check our gear guide before packing your support box.
Boñar beyond the race
While runners loop the course, Boñar hosts La Vuelta Roja, a night hiking route open to locals and visitors who want to follow the challenge from the outside. The town, gateway to the Montaña Oriental Leonesa, sits a short drive from Riaño and its reservoir, and about 45 minutes from the city of León. Add this free, community-driven race to your season planner and explore the rest of the region’s races in our Castilla y León guide.
Mandatory Gear
According to the official race regulations
Strictly mandatory during all nighttime hours on the course
Recommended in case the battery runs out during the night hours
For the overnight temperature drop in the Montaña Oriental Leonesa
360Complete Pack
Registration for Noche Roja 2026
RegistrationA fully free event thanks to sponsorship from the Boñar town council. No bib fee, no entry fee.
Tips
- •Free entry: fully funded by the Boñar town council
- •Registration opens May 3, 2026
- •Bib pickup: Saturday, July 4, 10:00–11:30am
- •Race registered with DUV (Deutscher Ultramarathon-Verband): results count toward your international ultra-distance record
- •Signing Annex 1 (liability waiver) is mandatory at bib pickup
Where to stay in Boñar
AccommodationBoñar is the gateway to the Alto Porma, in the Montaña Oriental Leonesa. Rural lodging is limited in July.
Tips
- •Rural guesthouses and hostels in Boñar: book ahead, July is high season
- •León city is about 45 minutes by car
- •Riaño and its reservoir, about 30 km away, is another lodging option in the area
- •Camping area available for the support crew near the base
Gear for Noche Roja
Gear24 hours of racing including overnight: a headlamp is mandatory, and trekking poles and headphones are banned by the rules.
Tips
- •Headlamp mandatory during all nighttime hours — carry a spare
- •Trekking poles and headphones are banned on the course
- •At least 2 pairs of shoes to rotate through the 24 hours
- •Thermal layer: nights in the Montaña Oriental Leonesa cool down even in July
- •Folding chair and canopy for the support area between laps
Which shoes for Las 100 Millas de Boñar – Noche Roja?
Which footwear fits based on the race's terrain and weather
Which GPS watch for Las 100 Millas de Boñar – Noche Roja?
Which watch has the battery to last based on your estimated finish time
Best Shoes for Backyard Ultra 2026: Buying Guide
The 4 best shoes for Backyard Ultra in 2026: Altra Lone Peak 9, New Balance Fresh Foam X Hierro v9, Saucony Peregrine 16 and Salomon Sense Ride 5. Wide toe box, durability and comfort for dozens of 4.167-mile loops.
Best Trail Running Hydration Vests 2026: Comparison and Buying Guide
Best trail running hydration vests 2026: 12 vests and packs compared. How many litres you need by distance, soft flasks vs reservoir, and fit.
Strength Training Gear for Trail Running at Home 2026: Comparison and Buying Guide
Comparison of the best strength training gear for trail runners at home: dumbbells, resistance bands, kettlebell, TRX, weight bench and foam roller, with a 3-day-a-week routine.
Nutrition for 24 hours of backyard racing
NutritionBasic aid (water, soft drinks) from lap 1; solid food (fruit, nuts) from lap 3. The organizers recommend bringing your own strategy.
Tips
- •Bring your own nutrition strategy: official aid is basic
- •Combine real solid food (sandwiches, fruit) with gels for the longer laps
- •Steady electrolytes: it's 24 hours of effort in July
- •Your support crew can only assist you in the rest area, not on the course
Best salt tablets and sodium capsules for running 2026
A comparison of the 7 best salt tablets and sodium capsules for running and trail 2026: 226ERS Sub9 Salts, Crown Pro Salt Caps, Victory Endurance, Precision Hydration PH 1500 and more. How many salt tablets to take per hour, how to calculate your sweat rate and which format to choose.
How to get to Boñar
TransportBoñar sits in the north of the León province, in the Montaña Oriental Leonesa.
Tips
- •From León city: about 45 minutes via the LE-321
- •From Asturias: 1h30 via the Tarna or Pajares mountain passes
- •From Madrid: about 3 hours via the A-6 and N-601
- •No direct train to Boñar: a car is essential
Car rental for the Montaña Oriental Leonesa
Car RentalA rural area with very limited public transport. Renting a car from León or Asturias is recommended.
Tips
- •Pick up in León city or Asturias airport, depending on where you're coming from
- •Mountain roads: check conditions before heading down to the course at dawn
Sports insurance for Noche Roja
Insurance24 hours of continuous effort in a backyard ultra. Sports insurance is mandatory to take part.
Tips
- •Civil liability and accident insurance is mandatory
- •A federation license or day insurance valid for ultra-distance events
- •Nearest hospital is in León city: keep the distance in mind
Sun protection for the early laps
Sun ProtectionJuly in León: the first hours of sun before nightfall can be intense.
Tips
- •Apply sunscreen before the start and reapply every 2-3 laps while the sun is up
- •Cap or visor for the midday and afternoon laps
Best Sunscreen for Runners 2026: 7 Sweat-Proof SPF 50 Picks
Which sunscreen survives a sweaty long run? We compared 7 SPF 50 sweat-proof picks — creams, sticks and a lip balm — on heat, altitude UV and sweat resistance. See the winner.
Body care for 24 hours of loops
Body CareChafing and muscle fatigue are the biggest enemies in a 24-hour backyard ultra.
Tips
- •Anti-chafe balm on your usual friction points before starting
- •Change socks every few laps to keep your feet dry
- •Sunglasses for the daytime laps, a buff for the cold at night
Frequently Asked Questions
- When is Noche Roja 2026?
- Saturday, July 4, 2026, in Boñar (León), with bib pickup from 10:00 to 11:30am.
- What format is the race?
- It's a backyard ultra: a 6.7 km loop with 60 minutes to complete it, repeated for up to 24 laps in 24 hours. Whoever completes 24 laps wins; if no one reaches 24, the winner is whoever outlasts everyone else.
- How much does it cost to enter?
- It's free. The Boñar town council fully sponsors the event for participants.
- What distance challenges does it offer?
- Five milestones within the same loop: half marathon (3 laps), mountain marathon (7), 50 miles (12), 100 kilometers (15), and the full 100 miles (24 laps, the complete 24-hour challenge).
- Where is Boñar?
- In the Montaña Oriental Leonesa (Eastern León Mountains), next to the Alto Porma, about 45 minutes from the city of León.
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