Is an eSIM a good option for trekking the Inca Trail?

For the Inca Trail, connectivity will be very limited to non-existent for most of the trek due to the remote and rugged Andean environment. You should download offline maps and inform family of your itinerary beforehand. However, your eSIM will work perfectly in the starting town of Ollantaytambo and again once you reach Aguas Calientes and Machu Picchu.