Geax Barro Marathon TNT review

They might be part of a premier road brand, but Geax aren't afraid of a bit of muck.

Our rating 
4.0 out of 5 star rating 4.0
GBP £25.00 RRP | USD $29.82

Our review

Fast and floaty all round tread at a good price
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Geax are a name that are gradually getting the recognition they deserve, thanks to a solid range of well-made tyres like the Barro.


Again it’s not a specific mud tyre, and the relatively small alternate bar tread looks more summery than slippery specific. To be fair it struggles in deep mud if you’re braking or powering hard and it’s a slider rather than a sticker in off-camber situations.

Tubeless-ready TNT design means you can run lower pressures for more ground contact and a smoother, more sure-footed ride without risking extra punctures. You will have a fight getting the tight bead on and off though.

It clears fast and rolls well which helps keep momentum up in mixed conditions and means that it rides a lot lighter than it actually weighs.

Racers should note that the Barro Extreme Mud is an impressively tough and tenaciously grippy 1.7in skinny once you’re used to the initial ‘riding on ice skates’ feel.


Price of both versions is good considering the toughness and tubeless-ready versatility.

Product Specifications


Name Barro Marathon TNT
Brand Geax

Wheel Type Mountain
Tyre Width Sizes Available 1.7
Weight (g) 761