Saucony Peregrine 15 vs Brooks Cascadia 18

Comparison Overview

Both are top contenders in the trail category. The Brooks Cascadia 18 edges out as our pick.

How the Saucony Peregrine 15 and Brooks Cascadia 18 differ

The Saucony Peregrine 15 and the Brooks Cascadia 18 sit in the same trail 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 Saucony Peregrine 15 comes in roughly 0.5 oz lighter (10.1 oz vs 10.6 oz), which becomes noticeable on faster turnover and longer efforts; the drop differs (4mm on the Saucony Peregrine 15, 8mm on the Brooks Cascadia 18) — higher-drop shoes tend to feel friendlier to heel strikers and tight calves, while lower drops favor a midfoot landing; the Brooks Cascadia 18 rides on the taller stack (32mm/28mm vs 34mm/26mm), giving it more under-foot cushioning at the cost of a slightly less stable platform; and the Brooks Cascadia 18 is $5 cheaper at MSRP ($145 vs $140).

Head-to-Head Comparison

Frequently Asked Questions

Which is lighter, the Saucony Peregrine 15 or the Brooks Cascadia 18?

The Saucony Peregrine 15 is the lighter shoe at 10.1 oz versus 10.6 oz.

Which costs less?

The Brooks Cascadia 18 is the more affordable option at $140 compared to $145.

Do they have the same heel-to-toe drop?

No. The Saucony Peregrine 15 has a 4mm drop and the Brooks Cascadia 18 has a 8mm 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

• Saucony Peregrine 15 — full specs, AI insights, and verdict.
• Brooks Cascadia 18 — full specs, AI insights, and verdict.
• Browse the full running shoe database
• See more shoe comparisons