Mach X 3 vs Zoom Fly 6

The Mach X 3 is Hoka's do-it-all super trainer, the shoe you reach for when one pair has to cover the tempo session on Tuesday and the long run at the weekend. A Pebax plate sits inside a tall 44mm heel and 39mm forefoot stack, so you get a snappy, rolling ride without the harsh, race-only feel of a full carbon racing shoe. At 289g it is not light for the category, and you notice that on genuinely fast reps. What you get in return is versatility. It has enough cushioning to protect your legs over 20 miles and enough pop to hold marathon pace when you ask for it. Think of it as a workhorse with an extra gear rather than a pure speed tool. For runners who want a single plated trainer that does most jobs well, and who do not want to spend race-shoe money doing it, we rate the Mach X 3 highly. Just go in knowing it prioritises range over outright speed.

The Nike Zoom Fly 6 is the carbon plate experience for everyone who is not racing. It sits in the super trainer slot: a plated, well cushioned road shoe built to handle tempo work, long runs and the odd race without the price or the fragility of a true marathon flat. At 265g it is no featherweight, and that is the point. Nike has traded the raw speed of its race line for durability and a more forgiving daily ride, so you get the snap of a full length carbon plate stacked on a soft, bouncy midsole that holds up over the miles. If you want the actual race rocket the Vaporfly 4 is lighter and faster, but the Zoom Fly 6 is the one you can train in week after week. We rate it as one of the best value carbon trainers around for runners who want one shoe to cover their faster days.