Nike Zoomfly 6 vs New Balance SC Trainer V3: Which Super Trainer Wins?

Introduction

Plated super trainers have become the do-everything answer for runners who want one shoe for long runs, progression sessions, and the occasional race-day stand-in. The Nike Zoomfly 6 and the New Balance SC Trainer V3 are both built for exactly that role: partner shoes to each brand’s top racing models, while doubling as genuinely versatile daily trainers. After more than 100k in each, both proved excellent. The question is which one does the job better, and by how much.

Specs At A Glance

The Zoomfly 6 is the lighter shoe at 266g (9.4 oz) versus 278g (9.8 oz) for the SC Trainer V3. Nike’s shoe has an 8mm drop with a 42mm heel and 34mm forefoot stack; New Balance runs a 6mm drop with a 40mm heel and the same 34mm forefoot. On price, the Zoomfly 6 is the cheaper option, especially in the UK at £155 (versus £230 for the New Balance), while it costs $170 in the US against the SC Trainer V3’s $180.

Both use a full-length carbon plate above a midsole cutout that saves weight and puts the plate on show. The Zoomfly 6 layers bouncy ZoomX foam over a more durable SR2 carrier foam in a dual-density setup, while the SC Trainer V3 uses a single-density FuelCell midsole in its PEBA/EVA blend. Both wear a mesh upper with good rubber coverage across the forefoot and heel, and both showed no signs of outsole wear after over 100k with dependable grip.

Fit And Sizing

The Zoomfly 6 comes in a UK 9 / US 10 with no fit concerns and a comfortably padded collar and heel. It is a touch snugger around the toes than some Nike cushioned trainers, but there is plenty of room for long runs. New Balance runs slightly smaller in US sizing at 9.5 for the same UK 9, with a little less toe room, but the fit still works well and there was no heel rub, which has been an issue on some recent New Balance releases.

Overall, the Nike’s upper feels a bit more accommodating and better padded for daily training, while the New Balance holds the foot securely with less padding around the heel. Neither is a dealbreaker; this one goes to Nike on comfort.

Real Training Performance: New Balance SC Trainer V3

The SC Trainer V3 is a big step up from the first two versions, which were either too big to enjoy at pace or simply lifeless. This third version gets the balance right: a comfortable, relaxed ride at easy paces with a responsive edge when you push. Sessions like 10 x 1k around marathon pace and a 15-mile progression run all felt strong, and the foam delivers pleasant energy return once you lift the pace.

Where it fades is at flat-out race paces, where it feels less lively and nimble than the fastest options on the market. It also carries a touch more forefoot cushioning than the Nike, which makes the roll-through feel smoother and slightly more cruisy, helped by the lower drop.

Real Training Performance: Nike Zoomfly 6

The Zoomfly 6 is also a huge improvement on recent versions, which were heavy and underwhelming at speed. This is now a genuinely fast shoe. Test sessions included 10 x 1 mile, a hard 45-minute progression run, and a solid steady 15 miler, and it handled all of them with the same comfortable, relaxed feel at easy paces the New Balance offers, plus a bit more punch when you push off the toes.

In a short back-to-back run, the Nike felt slightly softer than the New Balance, especially at the heel, and delivered a little more propulsion rolling onto the forefoot, helped by the higher drop. The padded upper makes it an easy shoe to reach for every day. Both shoes felt stable for tall-stacked, soft-foam designs, handling cambered and uneven pavement without a wide, heavy base. Neither is the most aggressive option for all-out sessions compared to shoes like the Hoka Mach X2 or Saucony Endorphin Speed 4, but both are more comfortable and can still run genuinely fast.

Which One Should You Buy?

These two shoes do a very similar job and do it well: versatile daily trainers that lean comfortable without giving up speed. The New Balance ticks nearly every box, but the Zoomfly 6 ticks the same boxes slightly better. It offers a bit more range at all-out pace, a slightly more comfortable upper for daily training, and the better value, particularly in the UK where the New Balance pricing makes this an easy call.

If you want one shoe to stand in for a carbon racing shoe on faster days, the Zoomfly 6 is the pick. If you prefer a cushionier forefoot and a smoother, more cruisy roll-through, the SC Trainer V3 remains a very good shoe worth serious consideration.

Conclusion

The Nike Zoomfly 6 edges this comparison. Both super trainers excel on comfort for easy runs, long runs, and progression sessions while keeping enough pace for marathon-pace workouts, but the Nike offers a touch more speed, comfort, and value. Runners prioritizing forefoot cushioning and a relaxed ride should still put the New Balance on their shortlist.