Comparison Overview
Both are top contenders in the long run category. The Brooks Glycerin 21 edges out as our pick.
How the ASICS GEL-Nimbus 27 and Brooks Glycerin 21 differ
The ASICS GEL-Nimbus 27 and the Brooks Glycerin 21 sit in the same long run bucket, so the question isn't what you'd use them for — it's which one matches your stride, your weekly mileage, and your budget.
Where they actually differ: the Brooks Glycerin 21 comes in roughly 0.2 oz lighter (10.8 oz vs 10.6 oz), which becomes noticeable on faster turnover and longer efforts; the drop differs (8mm on the ASICS GEL-Nimbus 27, 10mm on the Brooks Glycerin 21) — higher-drop shoes tend to feel friendlier to heel strikers and tight calves, while lower drops favor a midfoot landing; the Brooks Glycerin 21 rides on the taller stack (32mm/24mm vs 38mm/28mm), giving it more under-foot cushioning at the cost of a slightly less stable platform; the Brooks Glycerin 21 uses a modern super-foam (PEBA or similar), which gives a livelier, more responsive ride than traditional EVA; and the Brooks Glycerin 21 is $5 cheaper at MSRP ($165 vs $160).
Head-to-Head Comparison
| Feature | ASICS GEL-Nimbus 27 | Brooks Glycerin 21 |
|---|---|---|
| Brand | ASICS | Brooks |
| Model | GEL-Nimbus 27 | Glycerin 21 |
| Category | long run | long run |
| Weight | 10.8 oz | 10.6 oz |
| Drop | 8mm | 10mm |
| Price | $165 | $160 |
Frequently Asked Questions
- Which is lighter, the ASICS GEL-Nimbus 27 or the Brooks Glycerin 21?
- The Brooks Glycerin 21 is the lighter shoe at 10.6 oz versus 10.8 oz.
- Which costs less?
- The Brooks Glycerin 21 is the more affordable option at $160 compared to $165.
- Do they have the same heel-to-toe drop?
- No. The ASICS GEL-Nimbus 27 has a 8mm drop and the Brooks Glycerin 21 has a 10mm drop, which can change how each shoe loads your calves and Achilles.
- Can I rotate both shoes in the same training block?
- Yes — many runners pair complementary shoes like these to spread load across different muscles and tendons. Use our rotation planner to build a mileage split that fits your schedule.
Read the full reviews
- ASICS GEL-Nimbus 27 — full specs, AI insights, and verdict.
- Brooks Glycerin 21 — full specs, AI insights, and verdict.
- Browse the full running shoe database
- See more shoe comparisons
Not sure which is right for you?
Use our AI-powered shoe finder for personalized recommendations, or build a smart shoe rotation with the rotation planner.