My marathons

Chihuahua by UTMB

The organiser has not published a date. Chihuahua
Copper Canyon
Copper Canyon. Photograph by Jesus Alejandro Guer…, CC BY 3.0 via Wikimedia Commons

The course

The organiser lists the 2026 Rarámuri 100M as 118 km with 5,600 m of climbing, a 30 hour limit and a 6:00 start from the main square of Cerocahui on 2 October.

The course in short 2 lines
  • 118 km and 5,600 m of climbing in the Copper Canyon118 km, 5,600 m up, 30 hours, a 6:00 start in Cerocahui.
  • Six races, from 9 km to 118 kmSix races, 9 km to 118 km, in the Copper Canyon.
Course notes 2 short reads on the course
Whole courseGradient118 km and 5,600 m of climbing in the Copper Canyon118 km, 5,600 m up, 30 hours, a 6:00 start in Cerocahui.

The 2026 course was new, with the life base in the canyon town of Urique. The route passes through communities including Urique, Churo and Guitayvo, home of the Rarámuri.

Sourced

Whole courseTacticsSix races, from 9 km to 118 kmSix races, 9 km to 118 km, in the Copper Canyon.

In 2026 the 93 km Weriga also started in Cerocahui at 6:00 with 4,700 m of climbing and a 22 hour limit. The event ran from 1 to 3 October 2026.

Sourced

Race fuel

Energy gel
An energy gel sachet
Illustration · drag to turn

Race fuel for Chihuahua

One gel every 40 minutes once you are past about 75 minutes of running, plus a spare.

Our pick: SiS BETA Fuel gel, box of 6, strawberry and lime. 40 g of carbohydrate a gel, about twice a usual gel, from two kinds of sugar your body takes up side by side.

Easy to forget on race morning: pack them with your bib the night before.

Get it on Amazon

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In Canada the button opens GU Energy Gel, Salted Caramel, 24-pack, the best seller there.

Outside the Netherlands, Belgium, Germany, Austria and Switzerland, the UK and Ireland, Spain and Portugal, Italy, the rest of the EU and Canada the button opens GU Energy Gel, Chocolate Outrage, 24-pack on Amazon.com, the best seller there.

Anti-chafe
Compeed Anti-blister stick
Photo: Compeed

Compeed

Compeed anti-blister stick, 8 ml

Best selling on Amazon amazon.nl, read 2 Nov

An invisible layer before the start keeps seams, straps and shoes from rubbing skin raw.

Put it on before you leave for the start: heels and toes, inner thighs, under a bra or heart-rate strap.

Try it on a long run first, like everything you use on race day.

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We earn a small fee if you buy through these links. The price is the same.

Number belt
A race number belt
Illustration · drag to turn

Compressport Race Belt

Holds your bib without safety pins through your top, with loops for up to 8 gels.

Clip the bib on the night before, so it goes on with your shorts in the morning.

Keep the number on the front, where officials and photographers can see it.

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We earn a small fee if you buy through these links. The price is the same.

Electrolytes
A tube of electrolyte tablets
Illustration · drag to turn

SiS Hydro electrolyte tablets, tube of 20

One tablet in a bottle puts back some of the salt you sweat out.

One tablet in 500 ml of water in the hour before the start.

Only if you have used them in training: nothing new on race day.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.

Blister plasters
Compeed Blister plasters, medium, 6
Photo: Compeed

Compeed

Compeed blister plasters, medium, 6

Best selling on Amazon amazon.nl, read 2 Nov

One in a pocket cushions a blister if one starts.

Put it on clean, dry skin and leave it until it comes off by itself.

Give a couple to whoever comes to cheer, so they are there at the km you need them.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.
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Trip

Getting a place

Entry through the organiser

Entry details on the organiser’s site →

The organiser, a third party. We take no entries and have no part in the race.

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