Honestly, if you're going from hotel to hotel from late May to early September, there isn't much you need to pack.
For clothing:
- Your hiking shorts + swim trunks and the day's t-shirt.
- A lightweight rain jacket. You’ll just have to accept that your shorts will get wet if it rains—it dries quickly once the rain stops.
https://www.decathlon.fr/p/veste-impermeable-de-randonnee-nh500-imper-homme/_/R-p-334354- Optionally, cycling shorts to protect your perineum.
- A spare pair of swim trunks and a t-shirt.
- A lightweight fleece jacket.
- Gloves to protect your hands, especially in case of a fall.
For food and hydration:
- 2 flexible 1.5 L water bottles
https://www.amazon.fr/dp/B000BS0AQU
- 1 rigid 1.5 L water bottle to attach to the frame
https://www.amazon.fr/Nalgene-WH-Sustain-Trinkflaschen-Grau/dp/B09LMR2PPL/ref=sr_1_11
- A packed lunch for midday.
3-4 L of water isn’t too much when it’s 35 °C all day.
A first-aid kit:
- Your medications.
- Supplies to clean a wound (hydrogen peroxide + cotton).
- Supplies for a bandage (sterile gauze + adhesive tape + scissors).
- Tweezers for splinters.
- Insect repellent for mosquitoes, horseflies, etc., for your thighs and forearms. Horseflies near farms can be really painful—they’ll follow you and deliver painful bites.
https://www.decathlon.fr/p/spray-repulsif-anti-moustique-et-tique-icaridine-100-ml/_/R-p-331595
- Sunscreen for your thighs and forearms.
- A hat to protect your neck, face, and ears from the sun.
https://www.amazon.fr/dp/B01641EO28
- Sunglasses with photochromic or polarized lenses.
- A small towel to wipe sweat from your face.
You’ll be barefoot in hiking sandals.
https://www.decathlon.fr/p/sandales-de-randonnee-columbia-ridge-venture-homme/_/R-p-X8593205A toiletry kit with Marseille soap for washing your body, hair, and doing laundry.
A tool kit:
- You should be able to unscrew any nuts or screw heads. Skip multi-tools—they don’t cover all needs and are heavier.
- Brake pads (or start with new ones).
- Brake cables (or start with impeccable ones).
- 3 thin, long zip ties.
- A 50 cm strap.
- A mini foot pump.
https://www.zefal.com/fr/pompes-a-pied/24-profil-travel.html
- A puncture repair kit and a spare inner tube.
- Self-sealing Michelin Protek inner tubes combined with Schwalbe tires like Marathon Plus, which are heavily reinforced.
A handlebar bag (5 L minimum, ideally 7-8 L) and two small 10 L rear panniers will be more than enough.
In the handlebar bag, keep everything you need quick access to: sunscreen, horsefly repellent, the small towel, your hat, snacks, etc.
One rear pannier will be for food + pump + tool kit, and the other for clothing + first-aid and toiletry kits.