Running shoes athlete training ASICS

ASICS Gel-Nimbus 28 Review: Maximum Cushion for Triathlon Training Miles

What to Look For

When it comes to high-mileage training shoes for triathletes, maximum cushion trainers are non-negotiable for long run days and recovery efforts. The ASICS Gel-Nimbus has been the benchmark in this category for years — and the 28th iteration is the best yet. Updated for 2026, the Gel-Nimbus 28 drops 20 grams compared to its predecessor while adding FF BLAST+ ECO cushioning for a softer, more responsive ride. Here’s whether it belongs in your triathlon shoe rotation.

Key Features to Consider

  • FF BLAST+ ECO Cushioning — ASICS has updated the midsole with eco-conscious FF BLAST+ foam, delivering a softer and bouncier underfoot feel than the Nimbus 27. It absorbs impact on long runs without feeling sluggish at tempo pace.
  • Weight Reduction — At roughly 290g for a men’s UK 9, the Nimbus 28 is 20g lighter than its predecessor. That might sound minor, but across a 90-minute run it makes a real difference to leg fatigue.
  • Engineered Knit Upper — The redesigned upper wraps your foot in a soft, breathable mesh that adapts to your foot shape over time. It’s noticeably more comfortable than the Nimbus 27 from the first wear.
  • HYBRID ASICSGRIP Outsole — The new outsole compound offers improved grip on wet roads — useful for UK training in spring and autumn — while maintaining long-term durability across 500+ miles.

Our Top Picks

Best Overall: ASICS Gel-Nimbus 28

The Gel-Nimbus 28 is the definitive daily trainer for triathletes who cover serious mileage. The improved cushioning and lighter weight make it a genuine upgrade over the 27, and the eco-conscious foam is a welcome addition. It’s ideal for long run days, easy recovery runs, and any session where protecting your legs matters more than raw speed. Available direct from ASICS UK at £170.

Best Value: ASICS Gel-Nimbus 27

If the Nimbus 28 isn’t yet available at your preferred retailer, the Nimbus 27 remains an excellent choice and is available on Amazon UK at a reduced price since the new model launched. It shares the same DNA — maximum cushion, reliable outsole, wide toe box — and will serve you well for another full season of training.

Check ASICS Gel-Nimbus 27 price on Amazon

Best Premium Alternative: ASICS Metaspeed Sky Paris

If you want to step up to a carbon-plated race shoe that shares ASICS technology, the Metaspeed Sky Paris is the option. It’s not a daily trainer but works brilliantly for race day and faster tempo efforts, complementing the Nimbus 28 in a two-shoe rotation.

Buying Tips

  • The Nimbus 28 runs true to size — order your usual ASICS size
  • Allow 2-3 runs to break the shoe in before your first long run session
  • The Nimbus 28 is best suited for easy to moderate paces (6:00/km and slower) — pair it with a faster trainer or race shoe for tempo and speed work

Care and Maintenance

Rotate the Nimbus 28 with at least one other pair of running shoes to allow the foam to recover between runs. Remove the insoles after wet runs to dry them separately, and avoid machine washing — hand wash with cold water and a soft brush if needed. Expect 500 to 600 miles from a pair with regular rotation.

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