La Dent de Crolles
📍 Rhone-Alpes , Departement de l'Isere · Nearest city: Saint-Hilaire (2 km)
64 XC score / 100 · takeoff at 2050 m · 📍 View on map
Coordinates and external links
45.30890, 5.85639Forecast next days
Updated: 2026-04-19 16:03 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Día muy favorable para XC, base de cúmulos ~838 m, viento 5 km/h.
base ~838m · wind 5 km/hDía volable, condiciones decentes, base de cúmulos ~929 m, viento 8 km/h.
base ~929m · wind 8 km/hCondiciones marginales, base de cúmulos ~1091 m, viento 7 km/h.
base ~1091m · wind 7 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Wind chart — altitude × time
Color: green < 20 km/h · yellow 20-30 · red >40. Arrows point to where the wind is blowing. Each column = 1 hour. 4 altitudes: 10m surface, 80m first thermal, 1500m (850 hPa) thermal cruise, 3000m (700 hPa) top.
Wind next days (Open-Meteo model)
Wind rose 10m — 2026-04-20
| Date | Morning 08-12h | Midday 12-16h | Evening 16-20h | |||
|---|---|---|---|---|---|---|
| 2026-04-20 | 3 km/h W | gust 18 | 4 km/h S | gust 19 | 4 km/h NW | gust 20 |
| 2026-04-21 | 4 km/h NE | gust 22 | 3 km/h E | gust 22 | 5 km/h NE | gust 23 |
Colors: green < 15 km/h (optimal) · orange 15-25 · red >25 (flying not recommended). ⚠️ = shear >25 km/h between 10m and 850 hPa (potentially broken thermals).
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 16 | High |
| Avg thermal probability | 0.85 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.47 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
From the 'Col du Coq' pass take the path to the 'Dent de Crolles' summit. It watch you all the time during your walking up.
Nearby sites
Pravouta (72) · Saint Hilaire du Touvet (64) · Col de Baure (48) · Saint Pierre de Chartreuse - La Scia (70) · Grand Som (50) · Charmant Som (47)