Spare battery, charger, bike helmet, day bike backpack (approx. 20 liters) with rain cover, comfortable sports shoes, bike shoes if needed, weather-appropriate and durable clothing in layers, bike jersey if needed, cycling gloves if needed, air pump, bike tools, sun and rain protection, provisions and drinking water, water bottle and suitable holder, first aid kit, pocket knife, mobile phone, phone holder for handlebars if needed, headlamp and reflectors if needed, map material