This post is for informational purposes. Persistent, worsening, or neurological back pain should be assessed by a qualified medical professional — a GP, physiotherapist, neurologist, or orthopaedic specialist.

Back pain after running is almost always one of three things: weak core or glute muscles that transfer excessive load to the lumbar spine, tight hip flexors from desk-based work that pull the pelvis into anterior tilt and compress the lower back, or form breakdown under fatigue forward head posture, hunched shoulders, and overstriding that all increase spinal loading progressively over a long run. Identifying which of these is driving your pain takes five minutes and determines whether the fix is a strength programme, a mobility routine, or a form correction. Start there before treating it as a medical problem.

If you’re following a structured training plan, use our running calculator to check whether your recent mileage increase has exceeded the 10% weekly rule. Rapid load increase is a common trigger for lower back issues that’s entirely preventable.

Lower Back Pain After Running (The Most Common Presentation)

Lower back pain in the lumbar region, roughly from the base of the ribcage to the top of the gluteal fold, accounts for the majority of running-related back pain. The lumbar spine manages significant compressive and shear forces with each foot strike, and its tolerance for those forces depends heavily on the supporting musculature.

Cause 1: Weak Core and Glutes

The lumbar spine relies on the surrounding musculature deep abdominal muscles (transversus abdominis), pelvic floor, multifidus, and gluteal muscles, to provide dynamic stability through each stride. When these muscles are weak or insufficiently activated, the spinal structures themselves absorb a greater share of the running load. Over the long run, this manifests as progressive lumbar aching that worsens in the final kilometres.

This is the most common cause of lower back pain in recreational runners, particularly those who run significant mileage but do little or no strength work.

The fix: A targeted strength programme addressing the glutes (particularly gluteus medius for frontal plane stability), deep abdominals, and lumbar extensors. Three sessions per week of 15–20 minutes — single-leg deadlifts, glute bridges, bird-dogs, and dead bugs is a meaningful starting point. For runners following a marathon or half-marathon training plan, integrating two short strength sessions per week from the beginning of the build is significantly more effective than addressing the pain reactively mid-training.

The runners who come to me with back pain almost always have the same pattern — they’ve been running high mileage but skipping strength work. The back pain is the spine compensating for what the glutes and core aren’t doing.

Cause 2: Tight Hip Flexors and Anterior Pelvic Tilt

The hip flexors, primarily the iliopsoas, attach to the lumbar vertebrae and pull the pelvis into anterior tilt when shortened. Most runners who also work desk jobs have chronically tight hip flexors from sustained sitting. When the pelvis tips forward, lumbar lordosis (the natural lower back curve) is exaggerated, increasing compressive forces on the posterior elements of the lumbar spine and contributing to pain during and after running.

How to identify it: Stand normally and look at your posture in a mirror from the side. Excessive forward tilt of the pelvis, where the front of the pelvis drops and the lower back arches prominently, suggests tight hip flexors and anterior pelvic tilt.

The fix: Consistent hip flexor stretching (low lunge with back knee down, held 60–90 seconds each side, twice daily) combined with glute activation exercises that teach the pelvis to neutralise. The dynamic warm-up before each run should include hip flexor activation and mobility. See our dynamic warm-up for runners guide for a complete pre-run routine.

Cause 3: Too Rapid Mileage Increase

The spine and its supporting soft tissues adapt to running load, but they adapt more slowly than cardiovascular fitness. A runner who jumps from 30 to 55km in two weeks may feel aerobically capable of the effort, while the lumbar structures, discs, facet joints, and surrounding musculature are being loaded faster than they can adapt.

The fix: Reduce weekly mileage to a comfortable baseline and build at no more than 10% per week. This is not just a muscle overuse principle — it protects the spinal tissues specifically. Our injury prevention hub covers progressive load management in detail.

Cause 4: Pre-Existing Spinal Pathology

Runners with diagnosed intervertebral disc herniation, osteochondrosis (degenerative disc disease), or facet joint arthropathy are more susceptible to back pain during running because the altered spinal structures cannot absorb impact as effectively as healthy tissue. Running doesn’t typically cause these conditions, but it can exacerbate them if load management and supporting musculature are not addressed.

If you’ve had previous episodes of significant lower back pain, imaging findings, or leg symptoms with lower back pain, work with a physiotherapist to establish a running programme appropriate to your specific situation before increasing mileage.

Upper Back Pain After Running

Upper back pain between the shoulder blades, in the thoracic spine, or into the neck and shoulder area during or after running is less common than lumbar pain and almost always driven by posture and mechanics rather than spinal pathology.

Cause 1: Forward Head Posture Under Fatigue

As running fatigue accumulates typically in the later stages of a long run, the head progressively migrates forward of the body’s centre of gravity. For every 2.5cm the head moves forward, the effective weight it places on the neck and upper back approximately doubles. A head that weighs 5kg in neutral alignment can generate the equivalent of 15–20kg of load on the upper back when it protrudes significantly forward.

The muscles of the upper back and neck compensate by working harder, producing the burning or aching sensation between the shoulder blades that many runners experience in the final kilometres of a long run.

The fix: Conscious posture cues during running eyes forward, chin slightly tucked, ears above the shoulders. Practise the cue in training runs: briefly check head position every kilometre. Strengthening the deep neck flexors and the mid and lower trapezius reduces the fatigue threshold at which posture breaks down.

Cause 2: Elevated, Tense Shoulders

Shoulder tension during running is both a cause and a consequence of fatigue. When tired, most runners unconsciously raise their shoulders toward their ears a defensive posture that introduces significant upper trapezius tension and reduces arm swing efficiency.

The fix: Periodic shoulder drops during runs consciously let the shoulders fall away from the ears, relax the hands (imagine holding a crisp packet without crushing it), and shake out the arms briefly. Practising a relaxed arm swing, elbows at roughly 90 degrees, driving back rather than across the body, hands not crossing the midline, removes the source of tension rather than just managing the symptom.

Cause 3: Referred Pain from Lower Back Structures

Back pain doesn’t always originate where it’s felt. Fascial connections throughout the posterior chain mean that tension or restriction in the lower back or gluteal region can present as pain higher up the back. If your upper back pain follows a long run but you also notice lower back tightness, the upper back may be a referred location rather than the primary site of restriction.

A sports physiotherapist can identify this through movement assessment and targeted palpation, and the treatment in this case targets the source (lower back, hip) rather than the location of pain.

Prevention: Building a Back-Resilient Running Body

Strength training twice per week. Glutes, core, and upper back are the priority groups. Key exercises: single-leg Romanian deadlifts (glutes and hamstrings), glute bridges and hip thrusts, bird-dogs (deep core and lumbar stabilisers), dead bugs (deep abdominal engagement), seated rows or band pull-aparts (mid and lower trapezius). 20–30 minutes per session is sufficient.

Dynamic warm-up before every run. Hip flexor and glute activation before running primes the muscles that protect the lumbar spine. Skipping the warm-up on easy days is a common pattern that leaves runners habitually starting sessions with cold, poorly activated posterior chain muscles. Our dynamic warm-up guide covers the full pre-run routine.

Cool-down stretching targeting hip flexors and hamstrings. Both groups are chronically shortened in runners, and both contribute to lumbar load when tight. Static stretching of 20–30 seconds per muscle group immediately post-run, while muscles are warm, produces meaningful long-term range-of-motion improvement. See our cool-down guide for the complete post-run stretching protocol.

Manage mileage increases. The 10% weekly rule is a reasonable upper limit for mileage growth. If you’re returning from a break, treat your first weeks back as base-building even if your fitness feels higher than your accumulated tissue tolerance.

Address desk posture. If you work at a desk for 7–9 hours daily, your hip flexors are shortening for significantly more hours than your running lengthens them. Regular standing breaks, a standing desk for part of the day, and specific hip flexor mobility work (at minimum 2 minutes each side morning and evening) address the root cause rather than just managing the running symptom.

Immediate Management: What to Do When Your Back Hurts

Reduce mileage, don’t stop entirely (unless pain is severe). For mild to moderate muscle-fatigue back pain, continuing to run at reduced volume and intensity while addressing the underlying cause is generally better than complete rest, which allows the supporting musculature to weaken further. Modify rather than stop.

Apply heat, not ice, for muscle-related lower back pain. Heat relaxes muscle spasm and improves blood flow to the affected area. A heat pack applied for 15–20 minutes after a run is appropriate for dull, aching muscular back pain. Ice is more appropriate for acute inflammatory injuries (sprains, contusions), not the chronic muscular loading pattern that typically produces runner’s lower back pain.

Avoid the temptation to aggressively stretch during an acute episode. If lower back pain is severe and recent, aggressive lumbar stretching can aggravate inflamed structures. In the first 24–48 hours of a significant flare, gentle movement (walking, light mobility) is preferable to deep spinal stretching.

Avoid NSAIDs as a first-line, ongoing response. Ibuprofen and similar anti-inflammatories may reduce acute pain but don’t address the underlying cause, and regular use carries GI and cardiovascular risks. Use short-term if necessary; address the root cause in parallel.

When to See a Doctor

Most running-related back pain is musculoskeletal and resolves with load management and targeted strength work. Seek medical assessment from a GP, physiotherapist, neurologist, or orthopaedic specialist if you experience any of the following:

• Leg pain, numbness, or tingling radiating below the knee potential nerve root involvement (sciatica or disc herniation with neural compromise)
• Weakness in one or both legs during or after running
• Pain at rest that doesn’t reduce with position change — not typical of musculoskeletal running injuries
• Bladder or bowel changes — seek emergency assessment; this can indicate serious spinal cord involvement (cauda equina syndrome)
• Back pain following a fall or impact
• Pain that is progressively worsening despite 2–3 weeks of reduced training and conservative management
• Night pain that wakes you from sleep consistently

The first three items on this list warrant prompt medical attention. The final items warrant assessment within 1–2 weeks rather than waiting to see if the pain resolves.