There are several road cycling routes in the area of Banyoles, with different elevation gains and levels of difficulty. And it is also a starting point for many other routes. Here are some of the most iconic:

Rocacorba
The climb to Rocacorba is one of the most popular routes, but also one of the most demanding in Catalonia, with gradients up to 18% on some stretches and sustained gradients of 15% during 1 km. So it’s common to find professional riders along the route. 
Route: Banyoles - Rocacorba - Banyoles
Distance: 13.8 km (climb)
Cumulative elevation gain: 800 m
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Santuari del Mont and Santuari de la Mare de Déu de Rocacorba
Route: Banyoles - Santuari del Mont - Banyoles - Rocacorba - Banyoles
Distance: 105 km
Cumulative elevation gain: 2,050 m
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4 Summits
Route: Banyoles - Girona - Els Àngels (1st summit) - Madremanya - Sant Martí Vell-Collet de Juià (2nd summit) - Celrà - Banyoles - Besalú - Beuda - Alt de Sagaró - Mare de Déu del Mont (3rd summit) - Can Vilà - Esponellà - Majokal (4th summit) - Centenys - Melianta - Banyoles - Rocacorba (5th summit) - Banyoles
Distance: 165 km approximately
Elevation gain: about 3,100 metres.
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Circuit of Amer - Sant Gregori
Route: Banyoles - Sarrià de Ter - Girona - Salt - Anglès - Amer - Sant Martí Sacalm - Amer - La Cellera de Ter - Bonmatí - Les Serres - Sant Gregori - Girona - Banyoles
Distance: 116 km
Cumulative elevation gain: 1,300 m
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Sant Pere de Rodes
Route: Banyoles - Borrassà - Fortià - Roses - Alt de Perafita – El Port de la Selva - Alt de Sant Pere de Rodes - Vilajuïga - Figueres - Vilafant - Esponellà - Banyoles
Distance: 128 km
Cumulative elevation gain: 1,400 m
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Vallter 2000 
Route: Banyoles - La Canya - Capsacosta - Camprodon - Vallter 2000 - Capsacosta - La Canya - Banyoles
Distance: 165 km
Cumulative elevation gain: 2,500 m 

See the Costa Brava Girona Tourist Board’s cycling catalogue for other road cycling routes in different parts of the province of Girona.