How to Relieve Soreness After Running
Introduction
Post-run soreness is one of the most universal experiences in sport. Whether you're a seasoned GAA player or someone who's just started a couch-to-5k programme, the stiff, heavy-legged feeling that follows a hard run is familiar territory.
Understanding what causes it, what actually helps, and — importantly — what doesn't is the foundation of managing it intelligently and recovering faster.
What Is Post-Run Soreness?
Delayed onset muscle soreness — DOMS — is the soreness that peaks 24–48 hours after exercise, particularly after running sessions that are longer, more intense, or more downhill-heavy than the body is accustomed to.
It is caused primarily by microscopic damage to muscle fibres and the connective tissue that surrounds them — a normal consequence of the mechanical stress of running, particularly the eccentric loading of muscles during the landing and braking phases of each stride. The soreness comes from the inflammatory response that follows this micro-damage, as the body begins the repair and adaptation process.
DOMS is a sign that the body has been challenged. It is not a sign of injury. And critically, the adaptation that occurs after DOMS — the repair and strengthening of the tissue — is exactly what makes you fitter and more resilient over time.
What Actually Helps
Active recovery. The most consistently effective intervention for DOMS is light movement the day after a hard run. A gentle 20–30 minute walk, an easy cycle, or a light swim keeps blood flowing to sore muscles, reduces the stiffness associated with inactivity, and accelerates the clearance of inflammatory by-products. It feels counterintuitive — the last thing you want is to move more — but it works.
Cold water immersion. Immersing legs in cold water (10–15°C) for 10–15 minutes post-run reliably reduces perceived soreness and speeds the return of performance markers. Cold reduces local inflammation and constricts blood vessels, which reduces swelling and the accumulation of inflammatory mediators in sore tissue. It is not comfortable, but the evidence is consistent.
Compression garments. Wearing compression tights or socks during and after running reduces muscle oscillation during exercise and enhances venous return afterwards. They won't eliminate soreness but consistently reduce its severity, particularly in the calves and quads.
Adequate protein intake. Muscle repair requires amino acids. Distributing 1.6–2.2g of protein per kg of bodyweight across the day — with a serving of at least 20–40g of high-quality protein within an hour of finishing a run — gives the body what it needs to begin the repair process efficiently.
Sleep. Growth hormone — the primary driver of tissue repair and adaptation — is secreted predominantly during deep sleep. Poor sleep directly impairs muscle recovery. Prioritising 8 hours following a hard session is genuinely therapeutic.
What Doesn't Help as Much as People Think
Static stretching. Despite being the default post-run ritual for most runners, static stretching has very limited evidence for reducing DOMS. It may feel good and is not harmful, but it is not meaningfully reducing the inflammatory process that causes soreness.
Aggressive foam rolling. Light foam rolling can improve blood flow and reduce the perception of tightness. Aggressive, painful rolling over an already-inflamed muscle adds mechanical stress to tissue that is already under stress. Keep it light and comfortable.
Anti-inflammatory medication. NSAIDs like ibuprofen reduce inflammation — which sounds like exactly what you want. The problem is that the inflammatory response to exercise is part of the adaptation process. Regularly suppressing it with anti-inflammatories after every hard session may blunt the training adaptations you're trying to achieve. Reserve it for genuine acute injuries.
When Soreness Becomes Something Else
Normal DOMS is bilateral — both legs feel similar — and resolves progressively over 48–72 hours. If you have sharp, localised pain in a specific structure rather than the generalised heaviness of DOMS, pain that is significantly worse on one side, pain that is worsening after 48 hours, or pain that prevents normal walking, that is not DOMS. That warrants assessment.
Building Tolerance Over Time
The most reliable long-term solution to post-run soreness is progressive training. The repeated bout effect is well established — the same run produces significantly less soreness the second time because the tissue has already adapted. Building running volume gradually and consistently builds tolerance so that the same effort produces less and less soreness over time.
This is why the MOVE Framework's approach to return-to-running after injury uses a structured, progressive protocol — not to be conservative for its own sake but because progressive loading builds the tissue tolerance that makes running feel better and better over time.
Dealing with persistent soreness or pain that isn't resolving between runs? Book your MOVE Assessment at ActiveLife Therapy — €60.
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