Trail running on the GR 20 in Corsica

5 days of trail running on the famous GR 20 in Corsica, from Conca to Calenzana, guided by Caroline, UIMLA mountain leader specialised in trail running.




Trip Duration

7 days

People per Guide

12 people

Trip Level


Offer Period

Jun, Jul, Aug, Sep

Type of Trip




    The famous and mythical GR 20 from South to North – from Conca to Calenzana – with a lightweight backpack!

    During the course, we will enjoy the scenery of this “mountain in the sea”. Passages in the forest, a hundred peaks over 2000 m, block routes, a technical group to make of this route an exceptional playground.

    Two experienced guides will supervise you. We have a perfect knowledge of the terrain and will assist the group during the stay.

    Since your travel bags will be transported from stage to stage, you will only need to carry your equipment for the day. An important asset to enjoy the maximum you can and put the odds on your side.

    This tour is for experienced trail runners, used to technical fields and mountains.

    There are several reasons why this trail running is fantastic:
    – A mythical course with demanding and beautiful steps
    – A transfer of the travel bags and daily assistance for light running
    – 7 steps from the South towards the North for a balanced course
    – The ideal preparation for the UTMB due to its distance or the Diagonale des Fous due its technicality
    – Professional advice on how to best prepare the course
    – Logistics: transfers, assistance, baggage transportation, accommodation, meals.

    In the ‘extra’ section below, you’ll find information about the required trail running level you need to have. You will also see the equipment that you need to bring with you.

    During these 7 days we will run on average 35km a day and go up from 1500 to 2500 meters. We will mainly be on single tracks and technical trails (stone, névé…). We will partially run off trails and be on aerial paths.

    Are you interested in this beautiful adventure on the GR 20? Then I invite you to contact me. We will have the opportunity to discuss the details, your level and your desires… It will be a pleasure for me to be your guide and coach during these 7 days! And if you want to practice trail running on traces of the UTMB, have a look at this trip!

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    Price per person

    Group of 1
    1222 EUR

    Group of 2
    1222 EUR

    Group of 3
    1222 EUR

    Group of 4
    1222 EUR

    Group of 5
    1222 EUR

    Group of 6
    1222 EUR

    Group of 7
    1222 EUR

    Group of 8
    1222 EUR


    Price includes

    • Guiding fee
    • Accommodation
    • Transport during the trip
    • Luggage transfer during the trip
    • Meals: Breakfast, Lunch, Dinner
     Price per person to join a group up to 12 clients.


    • Day 1Meeting at Bastia, transfer to Conca. Step Conca - Bavella

      6 h run, 18 km, D+ 1800 m
      Meeting at the Bastia sea port at 7:30AM, then transfer in minibus to the Conca village (2 hours).

    • Day 2Bavella – Zicavo

      7 h run, 26 km, D+ 1650 m.

    • Day 3Zicavo - Verde

      7 h run, 22 km, D+ 1850 m.

    • Day 4Verde - Vizzavona

      8 h run, 32 km, D+ 1650 m.

    • Day 5Vizzavona – Col Verghio

      14 h run, 45 km, D+ 3200 m.

    • Day 6Col Vergio – Asco

      10 h run, 30 km, D+ 2100 m.

    • Day 7Asco - Calenzana

      11 h run, 30 km, D+ 2200 m.
      Transfer to Calvi, overnight in lodge.

    • Day 8Transfer to airport and maritime station

      Calvi or Bastia.


    Other details

    Skill level required


    Fitness level required

    Extremely Fit

    Meeting point

    In Corsica, at the Bastia maritime station.

    Acces routes:

    - Bastia sea port or airport for departure

    - Calvi or Bastia sea port or airport for return


    In lodges (dormitories).

    More info

    A minimum number of participants (defined in advance) is required for the departure to take place. If the number of participants is insufficient and the departure is cancelled, clients will be informed via a phone call at least a week prior to the scheduled departure date and will receive a complete refund.

    Clients are required to have a multi-risk insurance, covering cancellation fees, rescue and accident, repatriation and baggage loss or theft.

    (GR20 en 5 jours en Corse)

    Group size: 9 to 12 people.

    Required level:

    - Regular practice of running and other endurance activities 4-5 times per week for at least 1:15hs

    - Regular practice of walking course in varied terrains

    - Regular practice of mountain hiking

    - Experience and participation in mountain trails of at least 40 km and 2000 m D+


    - During the day: a light backpack with a waterproof jacket, a long sleeve warm fleece type, a survival blanket, a whistle, an individual pharmacy kit*, a cap or headband, a hat and thin gloves, sunglasses suitable for running, long tights if you are wearing shorts to run, cereal bars and energy drinks, a plastic bag for waste, biodegradable toilet paper, a headlamp and spare batteries, a minimum reserve water of 1.5L, an elastic strapping strip and some cash

    - To wear: running short, a short-sleeved t-shirt, running socks and already worn trail shoes

    - For the whole stay: a down, a towel, spare clothes for 8 days, a personal hygiene kit, spare shoes, a spare water socket, spare batteries for the headlamp, a pair of spare laces, sandals for the evening, a pocketknife and earplugs

    - Recommended additional equipment: poles and camera

    * Individual pharmacy kit: anti-friction cream, sunscreen, double skin dressings, elastic band, paracetamol, anti-diarrheal, antiseptic and personal drugs


    About the Guide


    I hold the State Certificate of Mountain Leader (UIMLA), Athlete of Team Garmin Adventure. I won many trail competitions such as Oxygen Challenge, The Glaciers Tour of Vanoise, Albertville Trail, Drayes Blanches of Vercors, the Frison Roche Beaufort, Run and skate of Chamonix… I have also some racing podiums such as the Saintélyon, the Lyon Urban Trail, the Causses Marathon, the Allobroges. I am an ex-sportswoman of high level in rowing (World Championships, World Cups, France Championships). I have a mastery STAPS (Sport) and BEES First degree in rowing.
    I organise and supervise many trail courses in the Alps with a pro team, a friends group with whom we have a mission: Run and enjoy! I invite you to contact me if you want to train and/or discover these incredible massifs.



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    What People are Saying about Caroline Freslon


    Great experience, but definitely favored toward elite runners. One of our guides, JC, was amazing. He cared about every runner. The other guide seemed only to care for the elites (and himself). On top of Col des Montets, I asked if we had time to put on warm layers. The guide said \"of course,\" but then quickly proceeded to run off with the entire group while I stood bare and freezing with my gear unpacked. Total lack of consideration for the well-being of his runners. Otherwise a great tour.
    Read review
    James Jirn
    Great trip. Good balanced program, valuable tips from experienced guide and breathtaking environment.
    Read review
    Kurt Deleu
    Pour moi le trail c\'est avant tout la découverte de nouveaux territoires, les rencontres et les échanges avec d\'autres passionnés, le respect de la nature. Mes 3 stages avec Caroline m\'ont permis de retrouver ces fondamentaux dans un cadre toujours bon enfant, mais pas moins professionnel. Caroline est une passionnée de montagne et de tout ce qui y touche (sport, culture, gastronomie) et elle sait comme personne transmettre sa passion et ses bons conseils, toujours avec le sourire. Je garde un excellent souvenir des rencontres avec les autres stagiaires et mais aussi avec les autres encadrants, Guillaume, Seb, Cédric, Lydie et tant d\'autres rencontrés au cours de ces stages.
    Read review
    J\'ai fait deux stages avec Caro, c\'est devenu une amie, et chacun de ces stages m\'a laissé des souvenirs inoubliables. Le premier stage en 2014 en Haute Savoie à l\'occasion du Trail du Gypaète. Le Deuxième stage en 2015, dans les Calanques de Marseille. Ces stages auront été parfaits à tous les niveaux: Paysages grandioses (on sent qu\'ils ont été choisis avec soin), des échanges techniques avec des \"pros\" (un grand moment quand Caro inspecte les sacs à dos...), pleins de conseils nutrition - mode de vie etc... La découverte des autres stagiaires mais aussi des autres encadrants (très bon contact avec Guillaume Lenormand par ex.). Des conditions matérielles top (hébergement, repas, organisation etc...). Seule critique: le temps passe trop vite, c\'est toujours trop court! Donc au final quand c\'est fini, on n\'a qu\'une envie... c\'est de repartir pour un autre stage! Et vu le nombre de personnes que l\'on croise sur les stages qui en sont à leur n-ième participation, je peux affirmer que ce sentiment est partagé!
    Read review
    Jean G.

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