A hiker crossing an exposed granite ridge on the GR20 in Corsica, with jagged peaks and a mountain refuge in the valley below

GR20 · Corsica · Travel Medicine

The hardest trail in Europe is no place to be hunting for a pharmacy.

Pack azithromycin, Rx-strength ibuprofen, and dicyclomine before you fly into Corsica. Ready at your pharmacy at home, in your pack before you leave Calenzana.

180 km
of high-route trail from Calenzana to Conca
20,000+
hikers attempt the GR20 each year
12–16 days
typical time to walk the full GR20
<24 hrs
typical time to Rx at your pharmacy
  • Physician-founded
  • Licensed in all 50 states
  • HSA / FSA eligible
  • Same-day Rx in most cases

The GR20 runs about 180 km along the granite spine of Corsica, from Calenzana in the north to Conca in the south, and it is routinely called the toughest long-distance trail in Europe. Most hikers take 12 to 16 days, 6 to 10 hours of walking a day, sleeping in mountain refuges and eating what the refuges serve. France is a low-risk destination by CDC baseline criteria, and a week on the beaches near Calvi does not call for a traveler's diarrhea prescription. A two-week high-route traverse is a different setup. You are eating communal refuge meals, refilling water on the mountain, and many of those refuges are resupplied by mule or helicopter, so you are genuinely remote. Around 20,000 hikers attempt the route each year and a real share do not finish. Once you are a couple of stages deep, the nearest pharmacy is a long, hard walk off the trail. The pre-trip Rx is the difference between a one-day setback and abandoning the traverse to get to a doctor.

France travel health guide — vaccines, snapshot overview, and what to review before you go.

Orders are reviewed and prescriptions sent to your pharmacy within 24 hours.

Need help?

Booking questions, platform help, or just not sure where to start, give us a call.

+1 (302) 251-2302
Mon–Fri, 9 am – 6 pm PST
How it works

Rx at your pharmacy in three steps.

No appointment. No waiting room. Answer a few questions and a licensed provider reviews within hours.

1
Answer a few questions

Your destination, dates, health history, and current medications. Takes about 2 minutes.

Intake complete
~2 minutes
2
Provider reviews your visit

A licensed clinician reviews your health profile, checks for interactions, and approves your prescription.

  • Allergy screen passed
  • Drug interactions clear
  • Prescription approved
Under 24 hours
3
Prescription sent to your pharmacy

Your approved prescription is sent electronically to the pharmacy of your choice. Pick it up when your pharmacy has it ready.

Rx sent — ready for pickup
Pharmacy pickup
Why not a travel clinic?

Skip the appointment. Get the same Rx.

 
Wandr Health
Travel clinic
Total cost
$89–$129
$200–$400+
Wait for appointment
None
1–2 weeks typical
Time to Rx
Often within hours to 1 business day
Day of appointment
Where you pick it up
Any pharmacy you choose
Often clinic pharmacy only
Pharmacy insurance accepted
Yes, bring your card
Sometimes
HSA / FSA eligible
Yes
Yes
Common questions

GR20 Corsica medication FAQ

  • France on its own is a low-risk destination by CDC baseline criteria, and a beach week near Calvi or Porto-Vecchio does not justify a traveler's diarrhea prescription. The GR20 is a different setup. You are walking roughly 180 km over 12 to 16 consecutive days, eating communal meals at mountain refuges, and refilling water on the mountain, where many refuges are resupplied only by mule or helicopter. Once you are a few stages out, having azithromycin, Rx-strength ibuprofen, and dicyclomine in your pack means a bad gut day or a flaring knee is a one-day problem instead of the day you walk off the trail to find a doctor.
See you in Conca

Take on the GR20 with the prescriptions you'll wish you packed.

One visit, three prescriptions for the stages you're farthest from a town pharmacy. Reviewed by a US-licensed provider, ready at your pharmacy before you fly into Corsica.

Medically reviewed by the Wandr Health Medical Team · Last updated May 29, 2026