Grand Tour du Chambeyron conditions

Last updated . Satellite imagery from 30 October 2026 to 8 November 2026.

Grand Tour du Chambeyron: 68% snow-free as of 8 November 2026; snow on Col de Marinet and Col de Scaletta.

  • 68% of the line snow-free
  • 17.4 km still under snow
  • Snow line: 2,700 m
  • −21 points on last week.

The Grand Tour du Chambeyron usually opens early July, once the high cols melt out and the huts open.

This year the line was first 95% snow-free on 27 June 2026, and autumn snow returned by 10 October 2026.

The latest satellite reading, from 8 November 2026, shows 68% snow-free.

Sentinel-2 satellite imagery from 30 October – 8 November 2026 shows 68% of the Grand Tour du Chambeyron line clear of snow, with about 17 km still under snow.

That is 21 points less snow-free than the week before, so fresh snow has fallen.

The snow line sits at about 2,700 m.

Snow remains on stages 2, 4 and 5; the rest of the route is clear or nearly clear.

Less snow than the same week in 2025, when the route was 33% snow-free.

What it means: Expect continuous snow from about 2,700 m. Micro-spikes and poles are recommended above that height, and an ice axe on steep north-facing traverses.

Cols

ColHeightStageSnow
Col de Mallemort2,558 m1Clear
Col du Vallonnet2,524 m1Clear
Pas de la Couleta2,752 m1Clear
Colle dell Infernetto2,783 m2Clear
Col de Marinet2,787 m2Under snow
Col d'Enchiausa2,740 m4Clear
Col de Scaletta2,614 m5Under snow
Col de Ruburent2,502 m5Snow patches

Stage by stage

StageSnow-freeUnder snowLowest snow
1. Larche to Refuge du Chambeyron100%——
2. Chambeyron to Marinet56%5 km2,700 m
3. Marinet to ChiapperaNo clear view1.2 km2,650 m
4. Chiappera to Valmaggia35%4 km1,600 m
5. Valmaggia to Larche60%7.2 km1,900 m

Season by season

YearFirst 95% snow-freeAutumn snow backBest reading
202627 June10 October100% snow-free
202522 June1 November100% snow-free

Update log

  1. : 68% snow-free, snow line about 2,700 m. Snow on Col de Marinet, Col de Scaletta.
  2. : 89% snow-free, snow line about 2,700 m. Snow on Col de Marinet.
  3. : 41% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  4. : 98% snow-free. Snow on Col de Marinet.
  5. : 82% snow-free, snow line about 2,500 m. Snow on Col de Marinet, Col d'Enchiausa.
  6. : 100% snow-free.
  7. : 100% snow-free.
  8. : 100% snow-free.
  9. : 100% snow-free.
  10. : 100% snow-free.
  11. : 100% snow-free.
  12. : 100% snow-free.
  13. : 100% snow-free.
  14. : 100% snow-free.
  15. : 100% snow-free.
  16. : 100% snow-free.
  17. : 100% snow-free.
  18. : 98% snow-free. Snow on Col de Marinet.
  19. : 98% snow-free. Snow on Col de Marinet.
  20. : 97% snow-free. Snow on Col d'Enchiausa.
  21. : 90% snow-free, snow line about 2,750 m. Snow on Colle dell Infernetto, Col de Marinet, Col d'Enchiausa.
  22. : 87% snow-free, snow line about 2,700 m. Snow on Colle dell Infernetto, Col de Marinet, Col d'Enchiausa.
  23. : 79% snow-free, snow line about 2,500 m. Snow on Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta.
  24. : 51% snow-free, snow line about 1,600 m. Snow on Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  25. : 46% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  26. : 29% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  27. : 33% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  28. : 34% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  29. : 93% snow-free. Snow on Col d'Enchiausa, Col de Scaletta.
  30. : 100% snow-free.
  31. : 100% snow-free.
  32. : 100% snow-free.
  33. : 95% snow-free, snow line about 2,850 m. Snow on Col de Marinet.
  34. : 100% snow-free.
  35. : 100% snow-free.
  36. : 100% snow-free.
  37. : 100% snow-free.
  38. : 100% snow-free.
  39. : 100% snow-free.
  40. : 100% snow-free.
  41. : 100% snow-free.
  42. : 100% snow-free.
  43. : 100% snow-free.
  44. : 99% snow-free.
  45. : 98% snow-free.
  46. : 97% snow-free. Snow on Col de Marinet, Col d'Enchiausa.
  47. : 95% snow-free, snow line about 2,850 m. Snow on Col de Marinet, Col d'Enchiausa.
  48. : 82% snow-free, snow line about 2,550 m. Snow on Colle dell Infernetto, Col de Marinet, Col d'Enchiausa.
  49. : 49% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  50. : 47% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  51. : 32% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  52. : 33% snow-free, snow line about 1,550 m. Snow on Col de Mallemort, Col du Vallonnet, Pas de la Couleta, Colle dell Infernetto, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.
  53. : 20% snow-free, snow line about 1,550 m. Snow on Pas de la Couleta, Col de Marinet, Col d'Enchiausa, Col de Scaletta, Col de Ruburent.

How this is measured

The route is sampled every 200 m along the classic stages. Each point uses its most recent cloud-free satellite view from the 10 days before the update.

A point counts as snow when Sentinel-2 classifies it as snow or its snow index (NDSI) is high. Cloud, shadow and no-data pixels are left out.

Imagery: Copernicus Sentinel-2 L2A (Earth Search STAC), 20 m. Elevation: Mapbox Terrain-DEM v1 (zoom 12).

Satellite snow cover is a planning aid, not a safety verdict. It cannot see snow under trees or thin new snow, and it says nothing about avalanche danger, cornices or ice. Check with huts, guides and local bulletins before you go.

Grand Tour du Chambeyron route guide · Conditions on every route