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Backyard Ultra Almaraz Energía Infinita
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Almaraz

Backyard Ultra Almaraz Energía Infinita

Saturday, 14 November 2026

Backyard Ultra (vuelta de 6,7K)

6.7km ≈D+ 200m

Maratón (7 vueltas)

46.9km ≈D+ 1300m

100K (15 vueltas)

100km ≈D+ 2750m

See the gear
Backyard Ultra Almaraz Energía Infinita 2026 registration: dates not announced yetSee recommended gear

Your checklist for Backyard Ultra Almaraz Energía Infinita

What you need, category by category, with our #1 pick for this race. Tick what you already have.

0 of 6 ready

Swipe to see all 7 categories

Swipe to see all 7 categories

  1. GPS watch

    Suunto Run 2

    Very light: 35 g case

    Downside: 24 h of GPS: short for ultras over 100 km

    View on Amazon →(opens in a new tab)

  2. Gear

    Prepare two pairs of shoes and dry socks to swap between loops.

    Hoka Speedgoat 7

    Max Hoka cushioning: protects your legs over long distances

    Downside: High stack: less stable for those who want more ground feel

    View on Amazon →(opens in a new tab)
    See 7 alternatives Which shoe suits you best? Shoe finder

  3. Nutrition

    Eat something at every break instead of waiting until you are hungry.

    Maurten Gel 100

    Hydrogel technology: excellent gastric tolerance

    Downside: High price compared to other gels

    View on Amazon →(opens in a new tab)
    See 7 alternatives

  4. Sun Protection

    Sweat-resistant SPF50 cream, reapply at aid stations

    ISDIN Fusion Water Sunscreen SPF 50+

    Ultralight texture, feels invisible on skin

    Downside: Small format (50 ml), may run short on ultras

    View on Amazon →(opens in a new tab)
    See 7 alternatives

  5. Body Care

    Anti-chafe balm on armpits, thighs and feet

    Julbo Aerospeed

    Photochromic lenses: adapt from forest to summits

    Downside: Higher price compared to non-photochromic glasses

    View on Amazon →(opens in a new tab)
    See 7 alternatives

  6. Car Rental

    Book in advance and check the mileage policy

    DRIVALIA CarCloud Country Plus

    View on Amazon →(opens in a new tab)
    See 3 alternatives

  7. Trip logistics

    Registration, travel and insurance: what you should have sorted before race day.

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Seasonal kit

Backyard Ultra Almaraz Energía Infinita runs into the night: low-light kit

Main and backup headlamp, battery, pre-dawn layers and night-time fuelling.

See the full kit : Night Trail Running Kit: What to Carry in Autumn and Winter Races With Short Daylight

You may also need: Rain and Mud Trail Running Kit 2026: What to Bring to a Wet Race · What to Wear for Cold-Weather Trail Running 2026: The Complete Layering Kit

Race data

Terrain

Trail

Difficulty

Advanced

Distance

3 modalities

Visit official website(opens in a new tab)

  • Backyard Ultra (vuelta de 6,7K)

    Distance
    6.7 km
    Elevation Gain
    ≈D+ 200m
    Max Time
    -

  • Maratón (7 vueltas)

    Distance
    46.9 km
    Elevation Gain
    ≈D+ 1300m
    Max Time
    -

  • 100K (15 vueltas)

    Distance
    100 km
    Elevation Gain
    ≈D+ 2750m
    Max Time
    -
Will your watch battery last the ~19 h of Backyard Ultra Almaraz Energía Infinita?Worked out for the longest course (100 km). See which watches reach the finish with GPS on and which die on the way.Check my watch

2 weeks to Backyard Ultra Almaraz Energía Infinita: get your kit ready

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 – 18°C

Rain

27%

Wind

18 km/h

Sunshine hours

8h

Gear recommendations

Bring thermal layers (low of 10°C)

Buff Thermonet

Buff

Buff Thermonet

Thermal tubular Buff with Primaloft technology. Traps body heat, ultralight and versatile: hat, neck gaiter, headband. Ideal for high mountain.

View on Amazon →
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Craft Pro Hypervent LS Wind Top

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.

View on Amazon →
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HANKER Thermal Neck Gaiter

HANKER

HANKER Thermal Neck Gaiter

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.

View on Amazon →
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Icebreaker Merino 200 Oasis LS Crewe

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.

View on Amazon →
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Odlo Active Warm Eco

Odlo

Odlo Active Warm Eco

Long-sleeve thermal base layer made from recycled fabric with anti-odour treatment. Active thermal regulation, ideal as a base layer in the mountains.

View on Amazon →
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Odlo I-Thermic Women's Longsleeve

Odlo

Odlo I-Thermic Women's Longsleeve

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.

View on Amazon →
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ROCKBROS Thermal Windproof Balaclava

ROCKBROS

ROCKBROS Thermal Windproof Balaclava

Thermal windproof balaclava covering head, ears, cheeks and neck. Designed for cycling and motorcycling, it works just as well on windy, freezing trail runs.

View on Amazon →
(opens in a new tab)
Salomon Agile LS Tee

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.

View on Amazon →
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Salomon Cross Run Tight

Salomon

Salomon Cross Run Tight

Long trail tights with stretchy, breathable fabric. Adjustable waist, zipped back pocket. Protection from cold and vegetation.

View on Amazon →
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Salomon Cross Warm Glove

Salomon

Salomon Cross Warm Glove

Thermal running gloves with a non-slip palm and touchscreen fingertips. Light, warm and compatible with poles.

View on Amazon →
(opens in a new tab)
Under Armour ColdGear Armour Compression Mock

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.

View on Amazon →
(opens in a new tab)
Under Armour ColdGear Armour Compression Mock (Men's)

Under Armour

Under Armour ColdGear Armour Compression Mock (Men's)

Men's high-neck thermal compression top: brushed interior that holds heat and a quick-dry outer. Base layer for cold-weather runs.

View on Amazon →
(opens in a new tab)

II Almaraz Backyard Ultra Energía Infinita

The Almaraz Backyard Ultra takes place on 14 November 2026 at the town’s multi-purpose sports hall, starting at 9:00. It is organised by Vueltas a la Cabeza within the official Big Dog’s Backyard Ultra calendar, and results count towards the 2028 Spanish Championship.

The format

In a backyard everyone runs a loop of about 6.7 km every hour on the hour. If you finish early you rest for the remaining time; if you go over 60 minutes you are out. The race ends when one runner completes one more loop than everyone else. There are four categories: Backyard Ultra (70 places), 100K (20 places, maximum 15 loops), marathon (20 places, maximum 7 loops) and pairs (10 teams).

The course

It mixes tracks, rural paths and urban sections. The day loop is 6.69 km with +183 m; when night falls it switches to a 6.67 km loop with only +74 m. Each loop is manageable, but fatigue builds hour after hour.

How to prepare

Logistics are the key: spare shoes, a headlamp, easy-to-eat food and dry clothes. See more races in the region and plan your trip with the planner.

360Complete Pack

Almaraz Backyard Ultra registration

Registration

Places are limited per category and handled through CC Norte. The event counts towards the 2028 Spanish Championship.

Browse all registration

Tips

  • •Pick a category by goal: 7 loops (marathon), 15 (100K) or the open Backyard.
  • •Entry includes a bib, a commemorative shirt, aid stations and insurance.

Where to stay for Backyard Almaraz

Accommodation

Book accommodation near the start in advance: the race weekend fills the area.

Browse all accommodation

Tips

  • •Look for accommodation within 30 min of the start
  • •Book months ahead if the race falls on a holiday weekend or in summer

Gear for a Backyard Ultra

Gear

You will run by day and by night in the same event: a headlamp, shoes that stay comfortable for hours and spare clothes.

Browse all gear

Tips

  • •Prepare two pairs of shoes and dry socks to swap between loops.
  • •Bring a headlamp with spare battery for the night loops.
Hoka Speedgoat 7

Which shoes for Backyard Ultra Almaraz Energía Infinita?

Which footwear fits based on the race's terrain and weather

→
Suunto Run 2

Which GPS watch for Backyard Ultra Almaraz Energía Infinita?

Which watch has the battery to last based on your estimated finish time

→
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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 loop by loop

Nutrition

You get a few minutes of rest every hour: solid food, gels and isotonic drink that you can take quickly.

Browse all nutrition

Tips

  • •Eat something at every break instead of waiting until you are hungry.
  • •Test your nutrition strategy in long training runs first.

Getting to Almaraz

Transport

Almaraz is in the Campo Arañuelo area, north of Cáceres, by the Arrocampo reservoir. Driving is the most convenient option.

Browse all transport

Tips

  • •Leave with time to spare: the start is at 9:00 at the sports hall.
  • •If you plan many loops, do not drive home until you have rested.

Car rental for Backyard Almaraz

Car Rental

A car makes it easier to reach the start and get around before and after the race.

Browse all car rental

Tips

  • •Book in advance and check the mileage policy
  • •Useful if your accommodation is far from the start

Sports insurance for Backyard Almaraz

Insurance

Cover your participation with insurance that includes medical assistance and mountain rescue.

Browse all insurance

Tips

  • •Check that it covers the race format and elevation gain
  • •Review rescue cover if the race is in the mountains

Sun protection for Backyard Almaraz

Sun Protection

Sun exposure takes its toll on long races, especially on exposed sections and at midday.

Browse all sun protection

Tips

  • •Sweat-resistant SPF50 cream, reapply at aid stations
  • •Protect lips, ears and neck

Body care for Backyard Almaraz

Body Care

Kilometres and descents punish feet and skin: anti-chafe balm and blister patches prevent DNFs.

Browse all body care

Tips

  • •Anti-chafe balm on armpits, thighs and feet
  • •Blister patches in your pocket

Frequently Asked Questions

How does a Backyard Ultra work?
A loop of about 6.7 km starts every hour on the hour. You must finish it within 60 minutes and start again; whoever completes one more loop than everyone else wins.
When and where is the Almaraz Backyard Ultra 2026?
On Saturday 14 November 2026, starting at 9:00 at the Almaraz multi-purpose sports hall (Cáceres).
Which categories are there?
Backyard Ultra with 70 places, 100K with 20 places (maximum 15 loops), marathon with 20 places (maximum 7 loops) and pairs with 10 teams.
How much climbing does each loop have?
The day loop is 6.69 km with +183 m and –185 m; the night loop is 6.67 km with +74 m and –74 m.

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