What is Heel-to-toe drop?
Heel-to-toe drop (mm)
Height difference between heel and forefoot.
Short answer
Never jump from 10 mm to 4 mm suddenly — calf injuries follow.
Heel-to-toe drop when buying a running shoes
Height difference between heel and forefoot.
Why it matters: 8–12 mm suits heel strikers and eases Achilles load; 0–6 mm loads the calf more.
Look for: Never jump from 10 mm to 4 mm suddenly — calf injuries follow.
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