New Balance 1080 vs 880: Which Fresh Foam Trainer Should You Buy?

Buy the New Balance 1080 v15 if you want the softer, lighter shoe for long runs: new Infinion foam, a 37.0 / 30.6 mm lab-measured stack and 9.1 oz on a men's 9. Buy the Fresh Foam X 880 v15 if you want a firmer shoe that lasts: 39.7 / 35.4 mm measured, 9.9 oz, and nearly 5 mm more foam under the forefoot than the flagship. Both come in men's B, D, 2E and 4E and women's 2A, B, D and 2E, so width is not the deciding factor here — feel is.

The short answer

The numbers, side by side

The 880 has more forefoot foam. Really.

This is the part that surprises people. RunRepeat measured the 880 v15's forefoot at 35.4 mm — one of the thickest forefoots of any trainer we list — against 30.6 mm on the 1080 v15. The 880 also measures taller at the heel, 39.7 mm against 37.0 mm.

So why is the 1080 the flagship? Because stack is not softness. The 880 uses standard Fresh Foam X, which is firmer, and Running Warehouse describes it as a firmer ride than New Balance's softer More and 1080. You get more foam and feel less of it. If you are a forefoot striker, or your feet ache under the ball after long runs, that extra 5 mm is a genuine argument for the cheaper shoe.

Infinion against Fresh Foam X

At version 15 the 1080 moved to Infinion, a supercritical TPEE and EVA blend. That change is why it carries a 37 mm heel at 9.1 oz while the 880 needs 9.9 oz for a similar platform. Supercritical foams are lighter and livelier for the same volume; they are also generally less durable, which is the trade you are making.

Both are listed by Running Warehouse at a 6 mm drop, and the 880 page pitches it specifically as a durability-focused daily trainer for runners of all levels. If you replace shoes on a schedule rather than on feel, read when to replace running shoes.

The measured drops

Both shoes list 6 mm. RunRepeat measured 4.3 mm on the 880 v15, which makes it one of the flattest mainstream trainers in this category. If you are coming from a 10 to 12 mm shoe, that is a real change in how your calves and Achilles are loaded — give yourself two weeks of easy running either way. Background in heel drop and stack height explained.

Which one for your level

• Couch to 5K. The NHS plan is three run/walk sessions a week for nine weeks. The 880 v15: cheaper, tougher, and nothing about a beginner's mileage needs a supercritical foam.
• 10K training. 880 v15 again, unless you specifically want a soft ride.
• Half marathon. Higdon's Novice 1 Half peaks at a 10-mile long run, which is where the 1080's lighter, softer ride starts to pay.
• Marathon. Novice 1 Marathon is four runs a week for 18 weeks. The classic answer is both: 1080 v15 for the Sunday long run and 880 v15 for midweek miles. See the rotation guide.

When the answer is neither

Both are neutral shoes with no stability structure, and RunRepeat explicitly does not recommend the 1080 v15 for runners with stability needs. If your heel rolls inward as you tire, or your last pair wore through on the inside edge, buy the Fresh Foam X 860v15 instead: Running Warehouse lists it with two foam layers split by a medially wedged plate, on a 43 mm heel, in men's D, 2E and 4E.

Whichever you buy, fit it properly. The AAOS asks for a shoe that adequately grips your heel to ensure stability with room to wiggle your toes — and with four widths available in both of these, there is no excuse for buying a longer shoe to get width. The rest of the range is in best New Balance running shoes.