There is no government restriction on the age limit for trekking in Vietnam. However we do not accept reservations of hiking tour for children under the age of 8 years old and adults over 80 years old unless a classic itinerary is requested. All children under 18 years old must also be accompanied by an adult. Vietnam hard treks of level 3 are recommended for people aged 18 – 65 only. Some special hikes such as Fansipan climb and Son Doong cave expedition, an approval letter from your doctor may be necessary to join the challenge. Please visit this link for the difficulty level of our Vietnam hiking tours.