Detour de France: The Castles Beside the 2026 Tour de France Route

FeaturesRoute Recon
A road bike's cockpit looking down a tree-lined avenue towards the Château de Chambord

Last time we chased cafés and water taps along the Tour de France - the practical stuff. This time, let's be tourists. If you rode (or followed) the 2026 route with no deadline, what would be worth stopping for?

Switch on all of PitStopper's sightseeing categories, cast a wide 10 km net around every stage, and the answer is faintly absurd: more than 20,000 historic places beside a single bike race. Load a stage and it simply vanishes under them:

PitStopper showing hundreds of clustered historic sights along the Carcassonne to Foix stage

Impressive, but not a day out. Most of that pile is noise: nearly 9,000 war memorials (a Monument aux Morts in almost every French commune), thousands of field-wall "ruins", and every roadside viewpoint in the Alps.

Rein it in

So we did what you'd actually do. We tightened the net to a 5 km detour - a stop you'd genuinely make - and kept only the properly detour-worthy: castles, forts, monuments and ancient sites. That leaves 1,847 real landmarks, and now the map tells a story.

Stacked bar chart of castles, monuments, ancient sites and forts for each stage of the 2026 Tour de France

Château all the way down

The western and central stages are wall-to-wall châteaux. The Dordogne days are the peak: stage 8 (Périgueux to Bergerac) has 121 castles within a short detour, stage 7 (Hagetmau to Bordeaux) 117, and the Bourbonnais on stage 11 another 117 - almost all of them castles and nothing else. This is the France of turrets and moats, one château per village.

PitStopper map of the stage 8 route through the Dordogne, dotted with château and prehistoric-site markers

Stage 4 doesn't even need a detour: it rolls straight out of Carcassonne - the largest walled medieval city in Europe, a UNESCO citadel - into Cathar castle country, with 33 more castles within 5 km of the road.

Vauban's frontier

The forts tell a tighter story. Of the 41 near the whole route, 30 sit on a single stage - 13, Dole to Belfort - the old invasion corridor between the Vosges and the Jura, fortified for centuries. It's the red block that leaps out of the chart.

PitStopper map of the stage 13 route from Dole to Belfort, with forts clustered around Belfort

Catalonia's stonework

The Spanish opening is the outlier. Stages 1-3 have fewer castles but a wealth of monuments and ancient sites - Barcelona and Tarragona are layered with Roman remains and commemorative stone. Stage 2 (Tarragona to Barcelona) tops the entire Tour with 297 landmarks.

Where the history runs out

The high mountains are the blank spots. Stage 19 (Gap to Alpe d'Huez) has just eight landmarks in 128 km, stage 20 fifteen. Above the tree line there are no châteaux - only the climb.

One honest caveat

OpenStreetMap's castle tag is generous: it counts modest manoirs alongside the grand châteaux, and well-mapped regions look richer than sparse ones. But the shape is real, and it's a lovely thing to know - on most of this route, you are never far from somewhere worth stopping.

Every landmark, stage by stage

Stage Route Castles Monuments Ancient sites Forts Total
1 Barcelona - Barcelona 60 100 16 1 177
2 Tarragona - Barcelona 97 140 59 1 297
3 Granollers - Les Angles 32 68 52 0 152
4 Carcassonne - Foix 33 0 15 0 48
5 Lannemezan - Pau 20 3 10 0 33
6 Pau - Gavarnie-Cèdre 19 11 14 0 44
7 Hagetmau - Bordeaux 117 23 9 0 149
8 Périgueux - Bergerac 121 1 44 1 167
9 Malemort - Ussel 50 0 13 0 63
10 Aurillac - Le Lioran 29 1 5 0 35
11 Vichy - Nevers 117 0 1 0 118
12 Magny-Cours - Chalon-sur-Saône 57 1 2 0 60
13 Dole - Belfort 51 7 12 30 100
14 Mulhouse - Le Markstein 10 12 5 0 27
15 Champagnole - Plateau de Solaison 28 7 30 4 69
16 Évian-les-Bains - Thonon-les-Bains 20 0 8 0 28
17 Chambéry - Voiron 58 5 26 0 89
18 Voiron - Orcières-Merlette 36 2 4 1 43
19 Gap - Alpe d'Huez 2 1 5 0 8
20 Bourg d'Oisans - Alpe d'Huez 3 0 10 2 15
21 Thoiry - Paris 61 53 10 1 125
Total 1,021 435 350 41 1,847

Plan your own detours

This works for any route, not just the Tour. Load your GPX into PitStopper, open the Historical category, set the search radius to however far you'd wander, and every castle, fort and ancient site gets pinned to your line - ready to ride along to your bike computer as a waypoint. Sometimes the best part of a ride is the excuse to stop.


Header photo of Château de Chambord by Beamy Drone on Unsplash. Sightseeing data © OpenStreetMap contributors. Stage routes from publicly published GPX files.