Cerro Chirripó - Costa Rica’s highest, with páramo, glacial lakes and (on a clear dawn) both oceans

The line through Talamanca Range, Costa Rica - waypoints, elevation and the day-by-day shape of the walk.
Start
Rest/water
Booked base
Dawn summit
Dec-Apr (dry season)
Cold nights up high, afternoon cloud/rain, strong sun
Best in the dry season (Dec-Apr); the park limits numbers and requires the base hut. Confirm.
Cloud forest, páramo, and a rocky summit above the treeline
Non-technical walking/hiking; confirm any exposed or scrambly sections locally
Marked/waymarked route; navigation generally straightforward - carry a map and confirm locally
Suitable for reasonably fit hikers; not wheelchair accessible - confirm specifics
A popular, well-known route - busier in peak season
Summit at dawn from the base lodge; side trips to the glacial lakes
San Gerardo de Rivas trailhead
Out-and-back/loop - no shuttle needed
Crestones Base Lodge (booked) below the summit
Layered outdoor kit, sturdy footwear, sun/rain protection, ample water; patchy mobile coverage - carry a map/PLB where remote
Services in San Gerardo de Rivota; limited or none on the trail
Not required; self-guided (porters available)
A SINAC park permit plus a Crestones Base Lodge bed - both must be booked well ahead (limited quota). Confirm.
Permits and operators change - confirm before booking.
Altitude illness is the key risk at these elevations - acclimatize, ascend gradually, know the descent rule; cold, the long climb, afternoon storms
Retrace the route to exit; dial local emergency services; carry a means of calling for help where remote
This profile is desk research, compiled from public sources - not a first-hand trail report. Coordinates are approximate.