Bike test: Trek 520 touring bike

Trek 520
Cycle magazine’s Dan Joyce assessed Trek’s veteran steel tourer which has been redesigned to reflect modern trends

The oldest model in Trek’s line-up has had a makeover, gaining bigger clearances and bikepacking mounts, and swapping bar-end controls for brifters.

Not all of the changes are for the better. It’s great that you can fit 29er mountain bike tyres up to about 2.2in wide, but the switch from a steel fork to an aluminium one is strange. With the recommended 60-90psi in the 38mm Bontrager H1 front tyre, vibration from the UK’s ubiquitous chipseal is tangible. The problem is compounded by a steep seat angle that tips your weight forward onto the hands.

The fork uses a ThruSkew axle, which repurposes a QR as a skinny screw-through. It’s no stiffer but is more secure.

The frame has enough heel clearance for big panniers, and enough stiffness that they don’t wag the bike when heavily loaded. While the front rack is capacious and good quality too, I’d rather have had a pair of mudguards.

The new 520 is arguably better as a rough-stuffer than as an all-day mile-eater

Gear shifting is OK, and you can trim the front derailleur’s position a little to avoid chain rub. While lots of riders will welcome the smaller steps of a triple, I’d have chosen an Alpine double (e.g. 40-26). Doubles work better and need no trimming.

The wheels are well built with 36 spokes apiece. Those Bontrager Hard Case tyres feel durable but a bit lifeless. A switch to more supple rubber would pay dividends on road. Yet I’d fit 50-622 Schwalbe G-One Bite tyres instead: the new 520 is arguably better as a rough-stuffer than as an all-day mile-eater.


Like Surly’s Long Haul Trucker, Trek’s 520 is a sturdy tourer with sensible gearing that’ll take fatter tyres for dirt road or off-road adventures. This versatility adds value, though I’d want a longer lay-back seatpost to improve comfort.

Other options​

Surly Disk Trucker £1,600

Robust steel tourer in two versions: 26in or 700C. “Fatties [tyres] fit fine” on either. Capable but looking expensive now.

Genesis Vagabond £1,299

Versatile steel ‘monstercross’ bike reviewed in the April/May 2019 issue of Cycle. The 2020 model has 2×11 SRAM brifter gears not bar-cons.

First published in Cycle magazine, October/November 2019 issue. All information correct at time of publishing.

Tech spec

Trek 520

Price: £1,200

Sizes: 48, 51, 54, 57, 60, 63cm (54 tested)

Weight: 13.87kg/30.5lb (no pedals)

Frame & fork: Chromoly steel frame with fittings for mudguard, rack, three bottles, pump, kickstand. Aluminium alloy fork with ThruSkew dropouts and fittings for mudguard, front rack, two bottle/ luggage cages

Wheels: 38-622 Bontrager H1 Hardcase Ultimate tyres, 622×21 Bontrager Affinity Disc tubeless-ready rims, 36×3 14g stainless spokes, Shimano M475 disc hubs

Transmission: 175mm Shimano Alivio T4060 cranks, 48-36-26 chainrings, Shimano SM-BB52 external bottom bracket, KMC X9 chain, Shimano HG200 11-36 9-speed cassette. Shimano Sora shifters, Shimano Sora front derailleur, Shimano Alivio long-cage rear derailleur. 27 ratios, 20-112

Braking: Shimano Sora levers, TRP Spyre C 2.0 mechanical disc brake callipers, 160mm rotors

Steering & seating: Bontrager Gel Cork tape, 31.8×420 Bontrager Comp VR-C alloy handlebar, 100×7º Bontrager Elite Blendr-compatible stem, 1 1/8in threadless headset. Bontrager Evoke saddle, 27.2×330mm Bontrager alloy seatpost

Equipment: Bontrager Carry Forward front rack, Bontrager Backrack Deluxe