We've done the homework for you and can come up with the top 3 Kvarner islands to cycle.
Krk
The island of Krk is the largest island in the Adriatic and sits in the middle of Kvarner bay. Known as the golden island, Krk has long been a tourist and cycling destination with its mild Mediterranean climate and natural and cultural treasures. This island offers some spectacular cycling opportunities with 60km of marked trails and 300km of hiking trails that double as cycling trails. On Krk, you can choose to cycle through its fabulous countryside or along the stunning coast where you'll pass through Krk's rolling hills, olive groves, vineyards, charming villages, and untouched nature. Some of the best routes to explore are the Punat to Malinska route, or the 62km hills and valleys round trip route from Omišalj.
There are also a number of cycling events which take place on Krk, the most notable being the Adria Bike 4 Island Event which is for competitive cyclists. Cyclists ride across Krk, Rab, Cres and Lošinj over 4 days travelling 270km. The other major cycling event on Krk is the Spring Bike Adventure which is a relaxed cycle event giving riders the opportunity to try Krk delicacies from its best producers, discover hidden secrets of the island and to have fun with fellow bike riders.
Cres
Cres which interestingly shares the title as the largest island in the Adriatic is also located in the crystal clear Kvarner Bay. This sparsely populated island is relatively untouched by tourism and has a contrasting landscape with beautiful beaches and bays on one side of the island and steep dramatic cliffs on the other. As far as cycling goes, there is some interesting cycling to be had on Cres with trails to accommodate cyclists of all levels of experience. Just about every one of Cres's charming villages is accessible by bicycle and riding on roads, is much less of a problem here because there are much fewer cars than in other Croatian destinations. That said there are many macadam tracks and old very infrequently used roads perfect for cycling. Some of the more popular cycle routes include the macadam track from Cres to Valun, Sv Petar to Ivanje or the ride to Vrana Lake, which is a large freshwater lake located in the centre of the island. Be sure to keep and eye out for the extremely rare Eurasian Griffons which live on the cliffs on Cres.
Some of the more popular cycle routes include the macadam track from Cres to Valun, St. Petar to Ivanje or the ride to Vrana Lake, which is a large freshwater lake located in the centre of the island. Be sure to keep and eye out for the extremely rare Eurasian Griffons which live on the cliffs on Cres.
Lošinj
Lastly, we have Lošinj the island of vitality where the famous 1st century b.c. bronze Apoxyomenos was discovered. The islands two main villages Mali and Veli Lošinj are tourist hot spots and very popular throughout the summer months and make for a great base for a cycling holiday. Like Cres, Lošinj has a varied landscape with rocky and steep terrain in its Northeast to flat bays, coves and beaches blanketed in pines in the Southeast. Cycling on Lošinj will take you through pine forests, along stretches of beaches, past cultural and historical monuments and ancient remains from previous inhabitants. Lošinj