Always wanted to climb Cero Chato, finally did it Friday morning. We heard it was intense and challenging, but having already done Chirripo we thought it was being built up and over estimated. We were wrong, it was a pretty tough hike!
The hike is only 3 KM long, but you climb 600 meters in that stretch so it is pretty steep. Lots of deep steps and uneven terrain, but a great workout. We made it up in about 1 hr 45 mins, back down in about 1 hour or so. At the top we had great views of Arenal, then you can take the path to the left to go down to the green lagoon. Pretty scenic and a good way to work out in the morning before it gets too hot or rains!