My marathons

Borneo International Marathon

The organiser has not published a date. Kota Kinabalu
Kota Kinabalu City Mosque
Kota Kinabalu City Mosque. Photograph by CEphoto, Uwe Aranas, CC BY-SA 3.0 via Wikimedia Commons

The course

The organiser describes the 2026 marathon as a tour of central Kota Kinabalu, coastal roads and suburban areas, mostly flat with gentle rolling hills and drinks every 2 to 3 km.

The course in short One line
  • City centre, coastal roads and suburbsA route through Kota Kinabalu's centre, coast and suburbs, mostly flat, drinks every 2 to 3 km.
Course notes One short read on the course
km 0 to 42.2GeometryCity centre, coastal roads and suburbsA route through Kota Kinabalu's centre, coast and suburbs, mostly flat, drinks every 2 to 3 km.

The organiser’s route page for the 7 to 10 May 2026 weekend calls the full marathon a complete scenic tour through the city centre of Kota Kinabalu, coastal roads and suburban areas. It lists the elevation as mostly flat with gentle rolling hills and says water stations stand every 2 to 3 km. The half marathon is a coastal route with a city centre finish and the 10 km a city centre circuit with waterfront views.

Sourced

Race fuel

Energy gel
An energy gel sachet
Illustration · drag to turn

5 gels for Kota Kinabalu, plus 1 spare

Finish

One every 40 minutes, by the clock:

  1. km 7mile 4.4
  2. km 14.1mile 8.7
  3. km 21.1mile 13.1
  4. km 28.1mile 17.5
  5. km 35.2mile 21.8

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.

Get it on Amazon

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.

Get it on Amazon

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.
distance
42.2 km26.2 mi

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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