Comparison Overview
Both are top contenders in the speed training category. Try both to find your preference.
How the Adidas Boston 13 and Saucony Endorphin Speed 5 differ
The Adidas Boston 13 and the Saucony Endorphin Speed 5 sit in the same speed training 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 Endorphin Speed 5 comes in roughly 1.0 oz lighter (9.3 oz vs 8.3 oz), which becomes noticeable on faster turnover and longer efforts; the drop differs (6mm on the Adidas Boston 13, 8mm on the Saucony Endorphin Speed 5) — higher-drop shoes tend to feel friendlier to heel strikers and tight calves, while lower drops favor a midfoot landing; and the Adidas Boston 13 is $15 cheaper at MSRP ($160 vs $175).
Head-to-Head Comparison
| Feature | Adidas Boston 13 | Saucony Endorphin Speed 5 |
|---|---|---|
| Brand | Adidas | Saucony |
| Model | Boston 13 | Endorphin Speed 5 |
| Category | speed training | speed training |
| Weight | 9.3 oz | 8.3 oz |
| Drop | 6mm | 8mm |
| Price | $160 | $175 |
Frequently Asked Questions
- Which is lighter, the Adidas Boston 13 or the Saucony Endorphin Speed 5?
- The Saucony Endorphin Speed 5 is the lighter shoe at 8.3 oz versus 9.3 oz.
- Which costs less?
- The Adidas Boston 13 is the more affordable option at $160 compared to $175.
- Do they have the same heel-to-toe drop?
- No. The Adidas Boston 13 has a 6mm drop and the Saucony Endorphin Speed 5 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
- Adidas Boston 13 — full specs, AI insights, and verdict.
- Saucony Endorphin Speed 5 — 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.