Hierro v8
Width options: standard, wide (Men's) / standard, wide (Women's)
Imported family signal
5 of 6 runners said this shoe fit true to size.
Sizing vs. popular reference shoes
| If you wear | Length | Width | Toebox | Reports |
|---|---|---|---|---|
Altra Lone Peak 7 (Women's) 10 4E100% 1 of 1 runners landed on 10 4E (0.5 weighted). | True to size | Slightly wide | Roomy toebox | Early reportsEarly Based on 1 reportUS 104-104 |
Altra Via Olympus 2 (Women's) UK 9 / EU 43 WIDE100% 1 of 1 runners landed on UK 9 / EU 43 WIDE (0.5 weighted). | True to size | Very narrow | Cramped toebox | Early reportsEarly Based on 1 reportUS 943-943 |
Brooks Glycerin 21 (Women's) 12100% 1 of 1 runners landed on 12 (0.5 weighted). | True to size | Slightly narrow | Good room | Early reportsEarly Based on 1 reportUS 12-12 |
New Balance Fresh Foam 1080 12 (Women's) 8.5100% 1 of 1 runners landed on 8.5 (0.5 weighted). | True to size | True to width | Good room | Early reportsEarly Based on 1 reportUS 8.5-8.5 |
New Balance More 4 (Women's) 11.5100% 1 of 1 runners landed on 11.5 (0.5 weighted). | True to size | True to width | Good room | Early reportsEarly Based on 1 reportUS 11.5-11.5 |
Hoka Speedgoat 6 (Women's) 11.5 wide100% 1 of 1 runners landed on 11.5 wide (0.4 weighted). | Consider sizing up 0.5 | True to width | Good room | Early reportsEarly Based on 1 reportUS 11.5-11.5 |
1 of 1 runners landed on 10 4E (0.5 weighted).
1 of 1 runners landed on UK 9 / EU 43 WIDE (0.5 weighted).
1 of 1 runners landed on 12 (0.5 weighted).
1 of 1 runners landed on 8.5 (0.5 weighted).
1 of 1 runners landed on 11.5 (0.5 weighted).
1 of 1 runners landed on 11.5 wide (0.4 weighted).
Your size, to start
Start with your usual size unless strong runner evidence says otherwise. We don't yet have enough validated reports to confidently recommend a length-size change for the New Balance Hierro 8 (Men's).
Own the New Balance Hierro 8 (Men's)? A 20-second fit report helps other runners.
Add my fit reportCommunity reports
Across the full report set, this many called the shoe true to size.
Reports linked to a public source you can open and verify.
Signals for hotspots, blisters, or other pain points across the full report set.
Runner notes are AI-extracted sizing summaries from public running-shoe discussions. They are not quotes.
| Came from | Bought | Verdict | Runner note | Issues | When |
|---|---|---|---|---|---|
New Balance More 4 (Women's) Size 11.5 | 11.5 | True to sizeTrue to width | Reported fit vs New Balance More 4 (Women's) — true to length, true to width. | No issues | Mar 2026 |
Hoka Speedgoat 6 (Women's) Size 12 wide | 11.5 wide | Slightly shortTrue to width | Reported fit vs Hoka Speedgoat 6 (Women's) — true to width. | No issues | Mar 2026 |
Altra Lone Peak 7 (Women's) Size 10 4E | 10 4E | True to sizeSlightly wide | Reported fit vs Altra Lone Peak 7 (Women's) — true to length, slightly wide, roomy toebox. | No issues | Mar 2026 |
Brooks Glycerin 21 (Women's) Size US12 | 12 | True to sizeSlightly narrow | Reported fit vs Brooks Glycerin 21 (Women's) — true to length, slightly narrow. | No issues | Mar 2026 |
New Balance Fresh Foam 1080 12 (Women's) Size 8.5 | 8.5 | True to sizeTrue to width | Reported fit vs New Balance Fresh Foam 1080 12 (Women's) — true to length, true to width. | No issues | Mar 2026 |
Altra Via Olympus 2 (Women's) Size UK 9 / EU 43 WIDE | UK 9 / EU 43 WIDE | True to sizeToo narrow | Reported fit vs Altra Via Olympus 2 (Women's) — true to length, too narrow, cramped toebox. | No issues | Mar 2026 |
Reported fit vs New Balance More 4 (Women's) — true to length, true to width.
Reported fit vs Hoka Speedgoat 6 (Women's) — true to width.
Reported fit vs Altra Lone Peak 7 (Women's) — true to length, slightly wide, roomy toebox.
Reported fit vs Brooks Glycerin 21 (Women's) — true to length, slightly narrow.
Reported fit vs New Balance Fresh Foam 1080 12 (Women's) — true to length, true to width.
Reported fit vs Altra Via Olympus 2 (Women's) — true to length, too narrow, cramped toebox.
Compare with popular shoes
See how the New Balance Hierro (Men's) fits side-by-side with shoes runners know well.
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