October in New York City is peak 5K and fun run season. From charity races in Prospect Park to Halloween-themed runs across the city, thousands of New Yorkers who haven't run in months suddenly lace up and hit the pavement. The energy is great. The impact on your spine — not so much.

As a chiropractor at KIRO in Brooklyn, Dr. Josie sees a surge of patients every fall who signed up for a casual 5K and ended up with lower back pain, hip tightness, or knee issues that won't go away. Here's why these fun runs are harder on your body than they seem.

Why Fall 5Ks Are Hard on Your Spine

1. Running Without Proper Training

Most people who sign up for a fall 5K haven't been running regularly. Going from zero to 3.1 miles on pavement is a shock to your musculoskeletal system. Your spinal discs, which act as shock absorbers between your vertebrae, aren't conditioned for the repetitive impact of running. Each stride sends force up through your feet, legs, and directly into your lumbar spine. Without conditioning, your lower back absorbs more of that impact than it should.

2. Running on Hard Surfaces

Most NYC races take place on asphalt and concrete — the hardest running surfaces you can find. Unlike a trail or a treadmill, pavement offers zero cushioning. The impact from each foot strike is absorbed almost entirely by your joints — ankles, knees, hips, and spine. Over 3.1 miles, that's roughly 3,000 to 4,000 foot strikes, each one sending a shockwave into your lower back.

3. Old or Wrong Running Shoes

Casual runners often dig out an old pair of sneakers from the back of their closet. Running shoes lose their cushioning and support after about 300–500 miles of use. Worn-out shoes don't absorb impact properly, which means more force transfers to your spine with every step. Wrong shoes — shoes that don't match your foot type or gait — can also throw off your alignment and create compensatory strain in your hips and lower back.

4. Poor Running Form

Without training, most casual runners default to poor biomechanics — overstriding, landing on their heels, running with a forward lean, or letting their arms swing across their body. Each of these form errors creates uneven loading on your spine. Heel striking, for example, sends a jarring impact straight up through your skeleton, while excessive arm swing rotates your torso with every step, fatiguing the muscles around your spine.

5. Standing Around Before and After

Race day means standing in registration lines, waiting at the starting corral, and milling around after the finish line. Combined with the run itself, you might spend two to three hours on your feet on hard surfaces. Your lower back is under load for the entire duration — not just during the race itself.

How to Protect Your Back During Fall Race Season

• Don't go from zero to race day. Even two weeks of short jogs before the event helps condition your spine and muscles for the impact of running.

• Wear proper running shoes. If your shoes are more than a year old or have visible wear on the soles, replace them before race day.

• Warm up before the race. Five minutes of dynamic stretching — leg swings, hip circles, walking lunges — prepares your spine and joints for impact.

• Stretch after the race. Focus on your hip flexors, hamstrings, and lower back. These areas take the most strain during a 5K and tighten rapidly after you stop running.

• Stay hydrated. Hydrated spinal discs are better shock absorbers. Drink water before, during, and after the race.

How a Chiropractor Can Help After a 5K

Even a short race can shift your spinal alignment — especially if you're not a trained runner. The repetitive impact of running compresses your lumbar discs, tightens your hip flexors, and can shift your pelvis out of alignment. At KIRO in Brooklyn, Dr. Josie uses chiropractic adjustments to restore proper alignment after the physical stress of running on pavement.

When your spine is aligned, your body recovers faster, your muscles release tension more efficiently, and you avoid the lingering soreness that can last for weeks after a race.

What Your First Visit to KIRO Looks Like

Your first visit is just $59 with the New Patient Special — a consultation, exam, and your first adjustment in about 15 minutes. Dr. Josie will assess your spine, identify the areas affected by running, and start correcting them right away.

Follow-up visits are about 10 minutes.

Stay Ahead With a KIRO Membership

For runners who want to stay proactive about their spinal health, KIRO offers a membership at $180 per month — no contracts, cancel anytime. Members get all doctor-recommended visits plus monthly surface EMG scans to track nervous system function.

Visit KIRO Brooklyn

KIRO's Brooklyn studio is open Monday and Thursday 10 AM–7 PM, Tuesday and Friday 8 AM–5 PM, Saturday 9 AM–1 PM. Closed Wednesday and Sunday.

KIRO accepts HSA and FSA cards and provides superbills for out-of-network reimbursement. No insurance needed, no cash accepted.

Don't let a fun run wreck your back for the rest of October. Book your $59 New Patient appointment at KIRO Brooklyn today.