There is no opportunity on this trip to buy new equipment. Ensuring you have the right gear is essential for everyone’s safety. It can be equally dangerous to carry too much gear that is not useful. If you are weighed down this adds to fatigue and you will be unable to accelerate your rhythm in bad weather.
What to bring and pack - Walking
Hiking boots or fell shoes, with soles in excellent condition
Socks
Shorts and T shirts
Swimwear
Good quality waterproof Gortex jacket
Warm fleece
Thermal hat and Thermal gloves
Waterproof trousers (optional)
Sun protection (sunhat, sun cream, lip protection, sunglasses)
2 litre platypus/camel-bag (A platypus system helps you to drink enough and saves time. Mix in energy drinks or electrolyte if this is something you do normally)
Tupperware lunch box with leak proof lid (optional)
Fork or spoon
Penknife (knifes are often not provided in the refuges)
Basic first aid kit with blister repair (moleskin or compeed)
Toilet paper / pocket tissues / plastic ziplock bags
Small mirror (optional)
Two walking poles
Headlamp
Casual Wear
Leggings or thermal tights
Teva style sandals
General
Small quick dry travel towel
Plastic bags and zip-lock style bags
Small wash bag with toiletries & antibacterial hand wash
Earplugs
Sleeping bag -5° comfort
Energy bars (a few of your preferred snack bars or gels. You should be eating little and often.
Bags
Rucksack 35-45 litres (You will need a heavy duty bin liner inside it to keep your bag waterproof, a thin nylon cover is not sufficient in heavy rain)
Bedbug Repellant
In recent years there has been an increase in bedbugs in the refuges on the GR20 and even in some of the hotels. This problem is not specific to Corsica. There are repellants available, that you can spray on your rucksack or sleeping bag before you come, if you know you are susceptible to bites. You should also bring anti histamine treatment if this is the case.
First Aid
Bring a first aid kit. Immodium for diarrhea, dioralite for re-hydration (Dioralite) Anti-histamine tablets or cream and plenty of blister protection.
The GR20 is certainly one of the hardest long distance walks out there. Several factors contribute to this, the rough rocky terrain, the unpredictable weather and micro climates.
The GR20 is protected by the Parc Naturel Régional de Corse. With such a large volume of people every year, there are certain rules in place to protect the area.