Sandals for Plantar Fasciitis: What to Look For (and What to Skip) Before Summer Travel

The four features that matter

Arch contour. The footbed should rise to meet your arch. Press your thumb into the arch of the sandal: if it collapses easily or is flat, the support will not hold up after a day of walking. A firm contour spreads load across the foot rather than letting it fall on the heel and fascia.

Deep heel cup. Look for a footbed with a defined, cupped heel that sits around the fat pad. It positions the heel and keeps it from sliding. Cushion in this spot should not bottom out when you press it.

A firm but cushioned midsole. Podiatry-oriented sources mention EVA and polyurethane as common midsole materials. What matters is that the midsole flexes where your toes bend, not in the middle of the arch. Try the bend test: a sandal that folds in half at the arch is not giving support.

Adjustable straps. A strap across the instep, and ideally one behind the heel, keeps your foot centered on the footbed. Without them your toes grip to keep the sandal on, which tires the foot.

Why flip-flops and thin slides are the weak spot

A flat thong flip-flop has no arch, no heel cup and little cushion, and your toes clench to hold it on. That combination is exactly the one that tends to aggravate a sore heel. Our flip-flops and plantar fasciitis page explains it in more detail, and slippers for plantar fasciitis covers the indoor version. A sandal that scores well on the four features above is a much better summer choice than a pool slide.

Backless slides deserve a special mention. With no strap behind the heel, your toes have to grip on every step, and the heel is free to slide around the footbed instead of sitting in the cup. A slide with a deep contoured footbed can be fine for the beach or the hotel pool, but it is a poor choice for a day of walking. If you love the slip-on style, look for versions with a rear strap or a firm contoured footbed, and keep them for short outings.

How to test a pair before you commit

Try sandals on in the afternoon, when feet are slightly larger, and walk on a hard floor, not carpet. Stand on one foot and see whether your arch feels held or sagging. Check that the heel sits fully inside the cup and that your toes are not hanging over the front. Walk for several minutes: a good sandal should feel stable, not sloppy. Plan to wear a new pair for an hour or two at first, and extend slowly, as with any change in footwear.

Making sandals you already own work harder

Some sandals have a removable footbed, and many people swap in a supportive insole or add a heel cup for extra cushioning. Check the fit: the sandal needs room for the insole without pushing your foot over the edges. Thin, flat, sealed sandals usually cannot be improved this way. Our heel cups vs insoles page explains when each makes sense. For closed shoes, a trim-to-fit insole such as Akusoli insoles is the sort of firm-arch, deep-cup option to look at.

Summer travel: a simple plan

Long days of sightseeing in sandals are a common trigger for a flare. Alternate between a supportive sandal and a closed supportive shoe, rather than wearing one pair for 12 hours. Stretch your calves and the arch in the morning and the evening using the routines in our plantar fasciitis stretches page. Avoid walking barefoot on hard hotel floors or sand for long stretches, and give yourself sit-down breaks.

When to get help

Sandals are a comfort tool and not a treatment. If heel pain has lasted more than a few weeks despite sensible footwear and stretching, or comes with swelling, numbness, tingling, redness, or pain at night, see a doctor or podiatrist. People with diabetes or reduced sensation should be careful with open footwear because small cuts are easier to miss. A podiatrist can also tell you what level of support your foot needs. The main plantar fasciitis hub has the wider picture.