Plantar fasciitis is chronic irritation of the tissue band under the heel. Standard care — plantar-fascia-specific stretching, activity changes, arch support, and time — resolves most cases within months. Flat, flexible shoes have no dedicated treatment evidence; some people tolerate them, others need more support. Persistent pain needs a doctor's evaluation.
What is plantar fasciitis and why does it hurt most in the morning?
The plantar fascia is a strong band of tissue that supports the arch of your foot. Plantar fasciitis is what happens when it becomes irritated — it's the most common cause of heel pain, affecting an estimated 2 million patients a year in the U.S. and, per the Cleveland Clinic, around 1 in 10 people at some point in their life.
Morning pain has a mechanical explanation. Most people sleep with their feet pointed downward, which lets the plantar fascia shorten and relax overnight. The first steps out of bed stretch it back out suddenly, which is why that first-steps pain is so distinctive — and per OrthoInfo (American Academy of Orthopaedic Surgeons), it usually eases after a few minutes of walking, then can return later in the day after you've been sitting for a while.
Who gets it?
OrthoInfo lists plantar fasciitis as most common among people aged 40 to 60. Beyond age, the risk factors that keep coming up across sources are being overweight, tight calf muscles, flat feet or high arches, a sudden increase in activity or standing time, and — per the American College of Foot and Ankle Surgeons (ACFAS) — wearing non-supportive shoes. None of these are things a single shoe purchase fixes on its own, which is part of why treatment tends to combine several approaches rather than relying on one.
What does the evidence say actually helps?
Stretching has the best trial evidence of anything in this list. In a randomized trial of 101 patients with plantar fasciitis lasting at least ten months, all patients got soft insoles, a short course of an anti-inflammatory, and an educational video — the only difference was whether they were taught a plantar-fascia-specific stretch or a standard Achilles-tendon stretch. At eight weeks, the fascia-specific stretch group had significantly less pain on the "worst pain" measure (P=0.02) and on pain with first steps in the morning (P=0.006) (DiGiovanni et al., 2003). A two-year follow-up of the same patients — by then everyone had been taught the fascia-specific stretch — found 92% reported total or near-total satisfaction, 77% had no limits on recreational activity, and 94% reported less pain than at the start (DiGiovanni et al., 2006).
Time does a lot of the work on its own. OrthoInfo states that more than 90% of patients improve within 10 months of starting simple treatment. ACFAS puts the more common initial response time at around six weeks of non-surgical care. Either way, the honest expectation is weeks to months, not days.
Orthoses and insoles are more mixed than you'd expect. A 2018 systematic review and meta-analysis pooling 20 randomized trials across 8 different orthotic types found that prefabricated insoles were not significantly better than sham insoles for short-term pain (mean difference 0.26, 95% CI −0.09 to 0.60), and custom orthoses weren't significantly better than sham either (Rasenberg et al., 2018). Their conclusion was blunt: foot orthoses were not superior to sham or other conservative treatment for pain and function. That doesn't mean insoles are useless — many people still find them more comfortable day to day — it means the pain-relief evidence specifically is weaker than most people assume.
Injections and shockwave therapy are options, but the overall picture stays murky. A network meta-analysis of 31 randomized trials (2,450 patients total) comparing corticosteroid injections, NSAIDs, exercise, orthoses, and extracorporeal shockwave therapy against each other found no treatment was clearly better than any other overall — injections and shockwave ranked most likely to help in the short-to-long term, exercise looked more useful for the long term specifically, and the reviewers' own conclusion was that current evidence is "equivocal" about which treatment works best (Babatunde et al., 2019).
Put together: stretching has the strongest single-trial evidence, most cases improve with time regardless of what else you do, and orthoses/insoles help some people day-to-day even though the pain-relief data on them is weaker than expected.
Are barefoot or flat shoes good for plantar fasciitis?
Here's the honest answer: there is no randomized trial testing barefoot or minimalist shoes as a treatment for plantar fasciitis. Standard medical guidance actually leans the other way — ACFAS's own recommendations include avoiding flat shoes and barefoot walking, alongside arch supports and heel cushions.
The closest thing to direct evidence is a small, uncontrolled case series: 20 of 28 enrolled runners with plantar fasciitis completed a 6-week barefoot-running-on-grass program, and their pain scores dropped from a baseline of 3.9 (±1.4) to 2.5 (±1.4) at 6 weeks and 1.5 at 12 weeks (P<0.001 at 6 weeks) (MacGabhann et al., 2022). That's a real result, but it has real limits: there was no control group, so some of that improvement could simply be the passage of time (which, as above, resolves most cases anyway); it studied running, not walking around in daily shoes; and the paper's senior author discloses a paid advisory relationship with a minimalist footwear brand — worth knowing when weighing how much to read into it.
There's a separate, indirect line of reasoning some people point to: weak intrinsic foot muscles are thought to play a role in plantar fasciitis, and a randomized trial found that walking in minimalist shoes was about as effective as a dedicated foot-strengthening exercise program at increasing foot muscle size and strength over 8 weeks in 57 runners (Ridge et al., 2019). That's a plausible mechanism, not a demonstrated treatment — the study measured muscle size and strength, not plantar fasciitis pain, and its subjects didn't have plantar fasciitis to begin with.
So who might reasonably try flat, flexible shoes, and who should stay in something more supportive? People without an active flare, who mostly need an easy on-and-off shoe for flat, even ground at home, are the ones most likely to tolerate a flat sole without trouble. People currently in a painful flare, who stand for long stretches, or who have flat feet or high arches, are the ones ACFAS's advice is aimed at — for that group, arch support and a more structured sole are the standard recommendation, not a flat one. If you do want to try a flatter shoe, the trials above phased people in gradually (weeks, not days) rather than switching cold; that's a reasonable pattern to borrow even outside a study.
What should a shoe for plantar fasciitis have?
There's no single "plantar fasciitis shoe" backed by trial evidence, but the design features people generally look for are a wide toe box (so the foot isn't compressed), a sole that flexes rather than fights the foot's natural movement, and — for anyone who wants added arch support without giving up a flat, flexible base — a removable insole, so a dedicated arch-support insole can be swapped in. The Oobend KyotoStep is built this way: a stretch-knit slip-on upper, wide toe box, thin flat flexible sole, and a removable factory insole, which is where Oobend's own Comfort+ Arch Support Insoles or Comfort+ Heel Cushion Insoles can go in for anyone who wants more structure underfoot. We are not describing this as a treatment — we do not claim the KyotoStep, or either insole, treats, cures, relieves, or fixes plantar fasciitis. It's a description of what the shoe is built from, not a medical claim about what it does to your heel.
What do customers with heel pain say?
Some Oobend customers mention plantar fasciitis and heel pain directly in their own words. One wrote: "I would recommend these shoes to anyone, especially those that suffer from foot pain or plantar fasciitis" (Judge.me review #77) — that's one person's experience and a personal recommendation, not a study finding, and it isn't evidence the shoe treats the condition.
Others describe a more complicated relationship with arch support specifically. One customer with flat feet wrote: "I have flat feet and arch supports cause me pain and make it difficult to walk... They are flat, soft, and easy to take on and off. I highly recommend these shoes for anyone with flat feet" (Judge.me review #93) — again, one person's account, and a reminder that "more arch support" isn't universally more comfortable, even though it's the standard clinical recommendation for many people.
Not every account is positive, and it's worth including the other side. One customer wrote: "These are good for sore feet, do not rub on any part of your foor. They are soft and easy to get on. The only problem is that there is no support, it is like walking barefoot, which is very uncomfortable if you have heel spurs" (Judge.me review #260) — one person's experience again, but it lines up with exactly what ACFAS's standard advice would predict for someone with an active flare: a flat, unsupportive sole isn't what's usually recommended for heel spurs or an active bout of plantar fasciitis.
When should heel pain be seen by a doctor?
ACFAS's own guidance is straightforward: if heel pain hasn't improved after about six weeks of simple measures — rest, stretching, supportive footwear — it's time to see a foot and ankle surgeon rather than keep self-treating. The Cleveland Clinic puts it even sooner: any heel or foot pain lasting more than a week, or that hasn't improved after two weeks of home care, is worth a doctor's visit.
Beyond that general timeline, a few things point to something other than ordinary plantar fasciitis and deserve prompt attention rather than a wait-and-see approach: pain that started right after a fall, a twisted ankle, or another injury (OrthoInfo notes heel bone fractures happen from falls and can be severe); numbness or tingling in the foot; visible swelling, redness, or warmth; pain severe enough that you can't put weight on the foot at all; a sudden "pop" felt in the heel or ankle; or pain that's present at rest or wakes you at night, rather than being worst with the first few steps of the day. None of the research in this article covers people with those symptoms, and none of it is a reason to try a shoe change before getting checked.
Frequently asked questions
Do barefoot or flat shoes cure plantar fasciitis?
No. There's no randomized trial testing barefoot or minimalist shoes as a plantar fasciitis treatment, and standard clinical guidance (ACFAS) actually advises against flat shoes and barefoot walking for people with active symptoms. Some people find flat, flexible shoes comfortable anyway; that's a personal fit question, not a treatment claim.
How long does plantar fasciitis take to heal?
Typically weeks to months. OrthoInfo reports more than 90% of patients improve within 10 months of starting simple treatment; ACFAS notes most patients respond to initial non-surgical care within about six weeks; the Cleveland Clinic describes a range of a few weeks to a few months.
Do orthotic insoles help plantar fasciitis pain?
The evidence is weaker than commonly assumed. A 2018 meta-analysis of 20 trials found prefabricated and custom orthoses were not significantly better than sham insoles for short-term pain. Many people still find insoles more comfortable for everyday wear, which is a separate question from pain-relief evidence.
What stretches help plantar fasciitis the most?
A stretch specific to the plantar fascia itself (not just the calf/Achilles) showed significantly better pain outcomes than a standard Achilles stretch alone in a randomized trial at 8 weeks, with high satisfaction sustained at 2 years.
When should I worry about heel pain?
See a doctor if pain hasn't improved after two to six weeks of simple care, or sooner if there's numbness, swelling, inability to bear weight, a sudden pop, pain following a fall or injury, or pain that occurs at rest or wakes you at night — those point to something other than ordinary plantar fasciitis.
Sources
- DiGiovanni BF, Nawoczenski DA, Lintal ME, Moore EA, Murray JC, Wilding GE, Baumhauer JF. "Tissue-specific plantar fascia-stretching exercise enhances outcomes in patients with chronic heel pain. A prospective, randomized study." Journal of Bone and Joint Surgery (Am), 2003;85(7):1270-1277. https://pubmed.ncbi.nlm.nih.gov/12851352/
- DiGiovanni BF, Nawoczenski DA, Malay DP, Graci PA, Williams TT, Wilding GE, Baumhauer JF. "Plantar fascia-specific stretching exercise improves outcomes in patients with chronic plantar fasciitis. A prospective clinical trial with two-year follow-up." Journal of Bone and Joint Surgery (Am), 2006;88(8):1775-1781. https://pubmed.ncbi.nlm.nih.gov/16882901/
- Rasenberg N, Riel H, Rathleff MS, Bierma-Zeinstra SMA, van Middelkoop M. "Efficacy of foot orthoses for the treatment of plantar heel pain: a systematic review and meta-analysis." British Journal of Sports Medicine, 2018;52(16):1040-1046. https://pubmed.ncbi.nlm.nih.gov/29555795/
- Babatunde OO, Legha A, Littlewood C, Chesterton LS, Thomas MJ, Menz HB, van der Windt D, Roddy E. "Comparative effectiveness of treatment options for plantar heel pain: a systematic review with network meta-analysis." British Journal of Sports Medicine, 2019;53(3):182-194. https://pubmed.ncbi.nlm.nih.gov/29954828/
- Ridge ST, Olsen MT, Bruening DA, Jurgensmeier K, Griffin D, Davis IS, Johnson AW. "Walking in Minimalist Shoes Is Effective for Strengthening Foot Muscles." Medicine & Science in Sports & Exercise, 2019;51(1):104-113. https://pubmed.ncbi.nlm.nih.gov/30113521/
- MacGabhann S, Kearney D, Perrem N, Francis P. "Barefoot Running on Grass as a Potential Treatment for Plantar Fasciitis: A Prospective Case Series." International Journal of Environmental Research and Public Health, 2022;19(23):15466. https://pubmed.ncbi.nlm.nih.gov/36497540/
- American Academy of Orthopaedic Surgeons, OrthoInfo. "Plantar Fasciitis and Bone Spurs." https://www.orthoinfo.org/en/diseases--conditions/plantar-fasciitis-and-bone-spurs/
- American Academy of Orthopaedic Surgeons, OrthoInfo. "Heel Pain." https://www.orthoinfo.org/en/diseases--conditions/heel-pain/
- American College of Foot and Ankle Surgeons. "Heel Pain." https://www.acfas.org/who-we-are/about-acfas/health-information-fact-sheets/heel-pain
- Cleveland Clinic. "Plantar Fasciitis: Symptoms, Causes & Treatment Options." https://my.clevelandclinic.org/health/diseases/14709-plantar-fasciitis
Related reading: Foot-Strengthening Exercises for Seniors · Flat, Flexible Shoes and Knee Pain: What the Research Actually Shows
Last updated: 2026-09-05
