Technical alpine
PD+/AD− — glacier with steeper mixed sections (El Castillo route)
Real climbing — steep snow/ice or roped rock at altitude.
2–3 days
Permit or guide required
Certified guide mandatory; access via the Carrel refuge is controlled.
Riobamba
Crowds: medium · most parties climb guided
December–January and June–July are the drier, calmer windows. High wind shuts the summit ridge more often than snowfall does.
Chimborazo's equatorial bulge means its summit is the farthest point from the centre of the Earth — farther than Everest's. The El Castillo route is a long glacier climb with steeper penitente and mixed steps, a 1,300 m summit day from the high camp, and notorious wind. It is Ecuador's graduation climb, taken after Cotopaxi and Cayambe, and the veleta ridge at 6,200 m makes every step count.
The world's most accessible 6,000er — an hour from La Paz and a genuine glacier summit.
Once voted the most beautiful mountain in the world — a flawless ice pyramid demanding real ice-climbing skill.
A perfect glacier cone on the equator — the classic high-altitude beginner expedition.