Collection: Marathon socks

Sidas marathon and long-distance running socks offer comfort, support and cushioning for extended runs. Designed to wick away moisture, reduce chafing and optimise blood circulation, they guarantee lasting comfort and maximum performance throughout your run.
  • Bundle & Save
    Up to
    -34%
    Shop now
    *On a selection of products

Why special marathon socks are a key element

When you are training for or running a marathon (42 km) — or even a half marathon or long-distance race — your feet are subjected to hours of continuous stress: repeated strides, repeated impact with the ground, perspiration, friction, possible swelling of the foot, temperature variations, muscle fatigue, etc. ‘Classic’ or poorly fitting socks can accumulate moisture, cause friction, blisters, irritation or discomfort, especially over time.

Socks specifically designed for marathons optimise comfort, breathability, moisture management, fit and protection — making the difference between a painful marathon and a successful one.

What Sidas long-distance socks offer

  • Moisture management & dry feet : technical fibres (synthetic or merino wool depending on the model) wick away perspiration, limit condensation and prevent a damp environment that can lead to friction, blisters or irritation.
  • Reduced friction & blister prevention: seamless (or flat-seam) design, padded or knitted areas precisely under the heel/forefoot, and firm support prevent the sock from moving or creating creases in the shoe — a decisive factor over 42 km.
  • Targeted cushioning & shock absorption: light or moderate cushioning (heel, metatarsals) helps absorb repeated impacts, protects sensitive areas, and reduces muscle or joint fatigue, which is particularly useful over long distances.
  • Foot support and stability: good arch support, light compression and a firm fit limit internal micro-movements, improve stability and posture, and reduce the risk of irritation or pain from repeated impact.
  • Breathability and lasting comfort whatever the climate or duration—ventilation, heat and moisture wicking, technical materials: all this keeps your feet comfortable, even after hours of running.

Who will really benefit from these marathon socks

  • Runners committed to marathons, half-marathons or long runs — whether for performance, pleasure or simply to keep going without pain.
  • Those with a history of blisters, irritation, rubbing or sensitive feet — there is very little margin for error over 42 km, and these socks help to minimise the risks.
  • Those who run often — regularly, long training sessions, high weekly volume — wear and tear, moisture and foot fatigue are cumulative factors.
  • Runners who pay attention to shoes + socks + overall comfort — because socks play just as important a role as shoes in performance and foot comfort during a marathon.

Expert advice & best practices

  • Choose the right size & fit — socks should fit snugly without being too tight: no creases, no excess thickness, firm support.
  • Choose technical fibres and avoid cotton — synthetics or technical blends/merino wool for moisture wicking, breathability and thermal regulation.
  • Test the pair before the race — go on several long training runs to check comfort, fit, absence of rubbing or pressure points before the big day.
  • Ensure a good combination of socks, shoes and insoles if necessary — the foot/shoe/sock combination must be consistent to maximise comfort, performance and protection.
  • Care for your socks properly — gentle wash, air dry, avoid fabric softener or tumble drying to preserve elasticity, moisture wicking and lifespan.