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Shop All Trek Mountain Bikes

From its Wisconsin roots in 1976 to trails all over the world, Trek has spent decades refining how a mountain bike should fit and ride. Trek mountain bikes are made to feel comfortable and confident from your very first ride, whether you’re exploring local woods or tackling your first proper trail.

At the heart of our range is the Trek Marlin, a simple, fun Trek hardtail mountain bike that’s ready for the trails straight away. There’s a model for every level, from the Marlin 4 for beginners to the Marlin 7 for more experienced riders.

Shop Trek MTBs online or explore our Trek electric mountain bikes in store with expert advice, flexible finance options and fast UK delivery.

Trek Mountain Bike FAQs

What size Trek mountain bike do I need?

The actual size depends on your height, however as a guide based on the Trek Marlin:

XS145–155 cm
4'9"–5'1"
S155–165 cm
5'1"–5'5"
M165–176 cm
5'5"–5'9"
ML173–180 cm
5'8"–5'11"
L177–188 cm
5'10"–6'2"
XL188–195 cm
6'2"–6'5"
XXL195–203 cm
6'5"–6'8"
Are Trek mountain bikes any good?

Yes, Trek is one of the best-known names in mountain biking. Its bikes are known for well-sorted geometry, reliable parts and a lifetime frame warranty.

Where are Trek mountain bikes made?

Trek is an American brand, founded in 1976 and based in Waterloo, Wisconsin. Its bikes are designed in the US but most production mountain bikes, including the Marlin, are made in Asia, mainly in Taiwan, China and Cambodia.

What replaced the Trek 4300, 3500 and 820?

Trek has discontinued the 4300, 3500 and 820. The Trek Marlin is now its entry-level hardtail range and the Marlin 4 is the closest modern equivalent. It’s lighter, better equipped and more trail-capable than those older models.

Mountain Bikes from Key Ranges

Trek Marlin RangeTrek Marlin Range

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