Field notes · outside the usual routes
Balneario Isla de María: our river escape near Tuxtla
By six in the evening, when the air cools and the little biting flies come out, the day visitors have usually gone. From then until late the next morning, the river is ours.
The Alternative Lives FactorOur family’s verdict · overnight stays since 2021, latest July 2026
For five years we’ve made the hour-and-twenty-minute drive from San Cristóbal de las Casas to the same balneario by a thermal river outside Tuxtla Gutiérrez — summer holidays, and again at Christmas. We’re friends now with the family who live at and run the site. We’ve never seen it advertised by a tour agency in San Cristóbal.
There is very little here, and that’s the point: a warm and inviting river running over small limestone cascades, a lawn under the coconut palms, and a couple of picnic tables. You come for the water. This page is how a visit works, for a day or for a night, and what I’d tell a friend before they went.
The visit at a glance · 2026
- Where
- Balneario Isla de María, one of several balnearios around Las Islas Marías, outside Tuxtla Gutiérrez, Chiapas — an hour and twenty minutes’ drive from San Cristóbal.
- Finding it
- Drive slowly on the approach: the sign sits down the bank beside the road, and you only see it as you’re about to pass the entrance. The Street View link below shows the approach.
- A day visit
- MX$40 ✓ per person to park and use the river (2026).
- Camping
- MX$40 ✓ per person for the afternoon and one night; stay past 9am and you pay again (July 2026). The tent comes down before 10am, so there’s space for day visitors.
- Hours
- No formal opening hours: the family live there, and they’re up by about 6.30am. The gate closes around 8pm — tell them if you’ll be coming back later.
- Facilities
- A couple of picnic tables, toilets you flush with a bucket of water, and no showers. Bring your own food and drink, or pick it up on the way.
- On the way
- Roadside stalls in América Libre sell cooked chicken, corn and fresh chicharrón. A few minutes before the balnearios, a Pemex with a Circle K has what an OXXO has, plus a coffee machine.
- When it’s busy
- Weekend lunchtimes. The first visitors usually arrive between 10.30 and 11am on Saturdays and Sundays, and most have left by 6pm.
The gate: 16.596398, -92.963327 · Plus Code 7689H2WP+HM. Paste either into a maps app.
Our river escape from San Cristóbal
We go for the water, and for the family who run the place. The children play with the dogs and spend the evening, and most of the next day, in the warm river water under the shade of the coconut trees.
When we take that trip in the first week of July, just as the schools break up, the uninhibited feeling of being away from school — no rules, long days full of adventure — comes through in their laughter and in the way they move.
Why this one, out of several
There are several other balnearios around Las Islas Marías, and I’ve visited most of them. I always choose this one:
- The river is natural. Some of the other sites have reshaped the landscape into concrete pools.
- The camping space is perfect: immediately alongside the river, on a small, relatively flat patch of green grass.
- There’s a ton of flexibility about coming and going late in the evening or early in the morning.
A day by the river
A day here is about relaxing in the water, climbing out to eat the food you’ve brought, and getting back in. There really is little else: the river, and a couple of picnic tables to cook on or to serve the food you’ve prepared.
Around lunchtime, especially at weekends, families arrive — many of them from Tuxtla — with a few beers and bags of Sabritas, and their children head straight for the water. Beers by a river or at a picnic spot are part of Chiapaneco culture. Start talking to people and you’ll find them super friendly.
One thing I love about this place: in five years we’ve never had anyone playing music from their car or bringing a loud speaker. Picnics in Chiapas usually come with a soundtrack, and it won’t always be to your taste. Here, it’s the river.
What to bring for a day
Most of what we pack for a night works for a day too. The short version:
- Shoes for the water — the riverbed is stony.
- All your food and drink, and a butane stove if you want something hot.
- Long sleeves for the biting flies as the afternoon cools.
- Toilet paper and baby wipes — the toilets are basic.
If you’d rather pick food up on the way, you pass through América Libre, a tiny town with a couple of hundred metres of stores along the roadside. They sell cooked chickens, corn and freshly prepared pork scratchings — chicharrón. Immediately after it, and just a few minutes before you arrive at the balnearios, there’s a Pemex with a Circle K: everything you’d find in an OXXO, and a coffee machine.
Staying the night? Here’s everything we take camping with children in Mexico.
A night under the palms
Camping is how we know the place best. Once the day visitors leave, around six, we have the river to ourselves through the evening and most of the next morning, until the first people arrive between 10.30 and 11 at weekends.
The family ask campers to take the tent down before 10am, so there’s space for visitors. They really aren’t strict about times: relax, and everything can be resolved with a conversation. The gate closes around 8pm. I’ve gone out and come back later, and that’s fine as long as you let them know.
We don’t light a fire — everything is usually damp, and the evenings are warm or still hot — though I sometimes bring a charcoal barbecue. In the morning, the coffee machine at the Circle K is a couple of minutes’ drive away.
Who it suits, and what it isn’t
It suits families with young children, and anyone happy with a simple day by warm water. The pools are shallow enough for toddlers. There’s very little current in the water, as each cascade falls into a wider or deeper section of river, and the depth of the water falls somewhere around your abdomen in the deep sections. It isn’t the place for restaurants, showers or anything organised, and the biting flies are worst at sunrise and sunset. After heavy rain the river rises, so check the rating below before you pitch.
Our rating
Our family’s rating — overnight stays since 2021, most recently July 2026, with our children aged 10 and 12.
How the Alternative Lives Factor works
The Alternative Lives Factor is our family’s overall judgement, not an objective score: how much of what we value about living outside the usual routes a place gave us — discovery, the children free and absorbed, connection with the people who live there, and time to slow down. 5 means this is why we do it; 1, not for us. It isn’t an average of Family fun and Comfort, which are simply what we found on the day.
Balneario Isla de María, near Tuxtla Gutiérrez
The Alternative Lives FactorOutside the usual routes
4/5Our kind of experience
Our visits · overnight stays, summers and Christmases since 2021 · latest July 2026 · children aged 10 and 12
The children in the warm river from the evening we arrive until we leave, and five years of friendship with the family who run it — something a first visit won’t give you.
With children: shallow pools that suit toddlers, and even the deepest part of the river is below adult chest height; we’ve never found a strong current. After heavy rain the river rises and can overflow, then drops back quickly — one rainy season we pitched a little up the hill, and we’d do that again.
Family fun5/5Swimming and bathing for the whole family: the children spend the evening and most of the next day in the water, and the rest with the dogs.
Comfort2/5Biting flies, worst at sunrise and sunset and fewer around Christmas; rudimentary tables to cook on; toilets you flush with a bucket of water, and no showers — we bathe in the river.
Access and restrictions: a public balneario, an hour and twenty minutes’ drive from San Cristóbal. Drive slowly on the approach: the sign sits down the bank beside the road, and you only see it as you’re about to pass the entrance. We don’t light a fire — everything is usually damp, and the evenings are warm or still hot — though I sometimes bring a charcoal barbecue (July 2026).
What we paid: MX$40 ✓ per person for the afternoon and one night; stay past 9am and you pay again (July 2026).
Been recently and found the prices, the hours or the river changed? Email me with what you found and the date you went.
— Luke Burchell
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More outings, and what we pack
Packing list · ten essentialsWhat we take camping with children in MexicoThe ten things we always carry, refined over five years of trips to this river.
A longer coastal tripCamping on the Oaxaca coast with two childrenA ten-hour drive, a reef with turtles, and how we handled the lowland heat.
Two cenote outingsCenotes in Chiapas with childrenFour cenotes near Comitán and Montebello, what we’d repeat with the children, and our ratings.
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