Gothenburg offers cycling for all tastes and ambitions. You can bring your bike on the ferry to the southern archipelago, (space permitting). Are you considering a complete bike holiday? You might want to check out the 370 kilometre long bike route Kattegattleden, close to the ocean, from Gothenburg to Helsingborg.
If you're not bringing your own bike, here are some rental options to choose from.
Apps: find bike routes, service stations and more
Cykelstaden (Bike route planner)
The bike route planning app Cykelstaden is available in Swedish and English and includes maps, bike rental stations, basic service staitons, etcetera.