From weather talk to a proposal: 23 days on the Camino

Dust settles on your boots faster than sweat dries. Two weeks out from the start, in the woods outside Burgos, two strangers walk the same path. A yellow arrow on a stone marks a direction they both already know. The Camino de Santiago is a web of routes people have walked across Spain to the apostle’s tomb in Santiago de Compostela for a thousand years, marked by yellow arrows and a scallop shell. They trade the two words everybody on the Camino says: “Buen Camino.” She adds a remark about the weather; he answers. The exchange is warm and short. Neither suggests carrying on together, so he goes ahead and disappears among the trees. That is where it usually ends.

Twenty-three days later they were engaged. Where does trust in someone who was nobody an hour ago come from? Biography normally builds it: shared years, favours returned, small tests passed. None of those ingredients had time to appear here, and something covered the difference anyway. It is worth working out what.

Her name is Loni Philbrick-Linzmeyer. She came to the Camino de Santiago after a breakup: to put her life back in order, not to find anyone new . Twenty-nine, a schoolteacher from California, two weeks into the walk.

His name is Kjartan Bergqvist. He is twenty-four, studies medicine in Denmark, and has just begun to question whether that is his path . That evening they each look for a bed on their own, and both end up in Burgos at the same albergue, the pilgrim hostel .

The first explanation for what began in that hostel offers itself for free: chemistry. Love at first sight, two people swept up by something neither of them chose. That is the version every family dinner would tell. The record of those days looks different.

That evening at the hostel they talked little, and mostly at the shared table, among other walkers comparing blisters. It was over coffee the next morning that the conversation turned to breakups, and then to things nobody usually gets told. Loni fought what she felt. Years later, talking to a CNN reporter, she could still hear the resistance in her own voice .

I didn't come all this way to meet some guy and hang out for two weeks— Loni Philbrick-Linzmeyer[1]

That is what armour sounds like a moment before it cracks. They walked that whole day apart, having agreed only to meet in the evening. And that was when Loni heard her own voice before she could censor it .

You know what? I actually want to walk with you— Loni Philbrick-Linzmeyer[1]

After that they walked together most days, though not all. One of them would say it plainly: “No, I need some time apart today” . In Burgos they were joined by Liz, a hiker who barged into the middle of their first date . Infatuation tends to demand continuity and exclusivity; the two of them rationed both and let a third person in. The first explanation is out.

That leaves the second one, far more appealing: the magic of this particular road. A thousand years of pilgrimage, stone bridges, wine at a shared table in the evening, something in the air that cannot be bought anywhere else. Extraordinary circumstances make extraordinary stories.

Those circumstances are mass-produced now. In 2024 the pilgrim office in Santiago issued 499,239 Compostela certificates, the document that says you walked the last hundred kilometres on foot, a third consecutive record .

Whole nations walk in that river, and single walkers too: over 200,000 Spaniards, but also one pilgrim each from Gambia, Suriname, Laos and the Solomon Islands . Half a million people a year pass the same arrows, sleep in the same hostels and go home without a ring. Magic that works on two out of half a million is poor magic. With chemistry ruled out and the place ruled out, the question becomes what twenty-three days of walking did to Loni and Kjartan.

The search moved to a laboratory, and to people with no Camino on their minds. Scott Wiltermuth and Chip Heath sent thirty participants across a campus in groups of three. Some groups walked normally; some walked in step, like soldiers . Back in the lab, everyone rated how much they trusted their companions. The in-step walkers averaged 5.6. The ordinary walkers, 4.1 . Nobody had told anybody anything about themselves; the manner of walking did it alone.

The strangest part of that result is what is missing from it. Mood did not move: joy came out at 4.7 against 4.8 . The shared tempo cheered nobody up, and it bonded them anyway. The effect size, d = 1.25, looks spectacular, but this was one experiment with thirty people: a strong single signal, not a law of nature.

After the walk the researchers added a coordination game: each player had to guess how high the others would go. The in-step walkers picked higher numbers in the very first round, before anyone had a reputation to lean on .

The phenomenon that made them bid higher in round one has a name: step synchrony, the unplanned matching of one person's moving rhythm to another's. The body signs the agreement before the head has read it. Shared strain comes on top of shared tempo: Brock Bastian's team showed that pain endured together draws strangers closer and raises cooperation in an economic game . Blisters, wet boots and twenty-odd kilometres a day fit that definition without any stretching. At this point the case looks closed: Loni and Kjartan walked side by side at one pace for three weeks, and physiology did the rest.

And this is where the laboratory starts withdrawing its answer. A decade after the campus experiment, Cheng's team turned the question around and fitted motion sensors to 67 people who rated one another in 186 pairings. The finding was that a better first impression predicts better step synchronisation, while synchrony itself left impressions unchanged . Walking together did lift impressions, except that the group which merely shared a room comes from a separate experiment, which is too little to prove a cause . For now it is a lead.

The meta-analysis adds a second caveat. Rennung and Göritz pooled 60 experiments on synchrony and the overall direction held: the average participant lands higher in prosociality than roughly 68 percent of controls . The rest weighs heaviest: across nine studies where the experimenter did not know who was in which condition, the behavioural effect could not be told apart from zero, and the authors say outright that a methodological artefact may be at work . The pooled mean effect, g = 0.48, is more modest than the campus number anyway.

This is where science runs out of things to say about these two. No experiment will rule on what happened outside Burgos. The honest version is that a measurable mechanism can be produced in a laboratory and works on people who have never heard of it. The rest has to be looked for in something far older than psychology.

This road has been doing its work on people for centuries. At noon in the cathedral of Santiago de Compostela a mass is said for pilgrims, and overhead the Botafumeiro can swing, a giant censer already mentioned in a medieval note added to the Codex Calixtinus. The countries and starting points of those who arrived within the last day are read aloud. A person walks in off the street as nobody and hears their own road called out across the church.

Anthropology has a word for this bond: communitas. Victor Turner used it for the state in which people, briefly lifted out of their everyday roles, become equals. He first watched it in rites of passage; on the Camino the same state travels on foot. An analysis of 32 Camino travelogues, published in 2023, found exactly that: an egalitarian community, intense comradeship, a generous, common friendliness . The road reduces an engineer and a student to the same role: a person with a pack. Father Paco Castro, a priest on the route, told an NPR reporter that on this road there are no borders and only one family, humanity . Communitas holds no passports.

This road builds friendships too. Justin Skeesuck and Patrick Gray have been best friends since childhood; Justin uses a wheelchair because of a rare condition, multifocal acquired motor axonopathy. When he asked whether they could do the Camino together, Patrick answered in three words: “I'll push you.” In 2014 they covered 500 miles, some 800 kilometres . Below O Cebreiro twelve people were waiting; Justin was carried up the steepest stretch by six of them, and helpers kept joining until there were seventeen . There is not a gram of romance in that story, and the road did the same to it. Years later Justin put it plainly to a newspaper .

Having Patrick alongside me, our joys are multiplied and our pains are divided.— Justin Skeesuck[10]

Loni and Kjartan walked that same road. Somewhere mid-route, taking detours and sleeping at a bed and breakfast strung with hammocks, the destination began to blur; Kjartan remembers it like this: “Santiago didn't really matter anymore” . On their final day they covered some fifty kilometres and walked into the city in the middle of the night . The hotels were shut, so they spread one sleeping bag on the street and slept the rest of the night there . The proposal came the next day. They had known each other twenty-three days .

They married in early 2014, at a courthouse in San Diego, half a year after that exchange in the woods, with Liz as one of the witnesses . The proper celebration came that summer, and Liz was the one who led it . When they told CNN their story ten years after the meeting, they had nine years of marriage behind them, lived in Denmark and were raising three bilingual children . Loni says she cannot remember a single moment of doubt that it was the right choice . The family dinners where friendships made on the road get written off owe her an apology.

One route to closeness is still standing, the most obvious of all: talking. In the 1970s Zick Rubin studied how disclosure travels between strangers: when one person opens up, the other usually answers in kind, though the reciprocity has its limits . In everyday speech we call it the stranger on the train. You tell someone met by chance what you would never say at home, because they will soon vanish with everything they heard. The Camino reverses that. In the evening people tell brand-new acquaintances what they never managed to say back home, and in the morning those same listeners lace their boots and walk on beside them.

And here every lead converges on one sentence. Trust grows out of doing the same hard thing beside another person, at the same pace, for long enough; the currency is the rhythm of footsteps, and confidences accrue on top of it like interest. The Camino compresses years into weeks because it strips the roles away. You get up at dawn, walk twenty-odd kilometres, and land in the evening at a hostel full of other people's socks and stories; no job title works there, no rank, nothing anyone has heard about you before. Sore feet, and the person alongside.

The same pattern shows up in other couples. Tykarski and Mróz surveyed 30 Polish pilgrims and ran 24 interviews about what a shared walk had done to their marriages and families . The sample is small and self-selected, so the result needs repeating on a larger group. The direction, though, is clear: 63 percent said the pilgrimage had definitely strengthened their relationship, and another 27 percent said it probably had . One answer says it for all of them: “On pilgrimage we finally had time to talk to each other.”

The road's echo lasts. In a survey by Lavrič's team, over 70 percent of 501 pilgrims reported changes that had not faded after coming home: more self-confidence, better personal relationships, less emotional baggage . This is self-report, imprecise by nature, and even so it matches what anyone can watch on the trail.

And here it turns personal. You probably have someone like that in mind: a person from a trip, from a project delivered over late nights, or from the morning gym, someone you grew closer to than the shared hours explain. What joined you then was the same effort in the same rhythm, repeated for long enough, and chemistry took a prize it had not earned. The good news: this can be arranged. One route, one person, the same slot every week; the park behind the house will do, and let them set the pace. Nobody can promise what will come of it; we know only that in a laboratory one walk across a campus was enough. And if someone close to you has spent years hearing that friendships from the road never last, this story says otherwise.

Somewhere in the woods outside Burgos, a yellow arrow on a stone still points west. Somebody is passing it today, saying “Buen Camino” to a stranger and hearing a line about the weather in reply. In twenty-three days they will know more.