Trips graded A imply minimum to no effort, being accesible for almost everybody. There are no special requirements in clothing, shoes etc, but still it is good to have at least comfortable shoes, binoculars, sun hat, sun creams, water bottle and a small backpack with you.
Trips graded B imply at least one day (2-3 hours of hiking up plus 1-2 hours of hiking downhill) of moderate effort (medium difficulty, average altitude difference of 400m) . We reccommend you bring comfortable walking shoes, walking clothing, a walking pole, as well as the equipment mentioned at grading A.
Trips graded C imply several days of hiking 30′-1h every morning and evening in medium to hard mountainous terrain. It is compulsory that you bring good hiking boots, hiking clothing, a walking pole, as well as the rest of the equipment mentioned before.
Trips graded D are the most strenuous. They are dedicated to those with very good physical condition, used with the hardship of the mountains. They imply sleeping in tents or mountain cabins, with no toilets or showers. Also, they imply that you will carry in your backpack your own equipment, PLUS food and sleeping gear. The terrain is difficult both uphill and downhill, taking you in the heart of a wildlife reserve, where animals rarely see any humans. From our experience vegetarians have a hard time coping with these tours unless they “prepare” for a few days prior to these trips and during the trips by eating lots of proteins. Your equipment should include good hiking boots with ankle support, gaiters to protect your legs from dense ground vegetation, as well as the rest mentioned above.