Bike ride in Spain

Hello, when will you be visiting Spain? What are your interests sightseeing wise? Spain is a big country with diverse geography, climates, and cultures.

Mid June 10-14 June

Here would be my top picks:

1. The Transpirenaica
   This trans-Pyrenees route runs for close to 800 kilometers along the southern slopes of the mountain range, from the Cantabrian coast (Cabo de Higuer, Hondarribia, Irún) to the Mediterranean (Cabo de Creus, in Girona province). Or vice versa. Part of the Europe-wide GR network of footpaths, its distinctive red and white markings have guided thousands of cyclists from around the world through protected areas in the Basque Country, Navarre, Aragon, Andorra, and Catalonia dominated by 3,000-meter peaks and with accommodation available in picturesque mountain villages. The perfect combination of nature, landscape, history, and cuisine.

2. The Camino del Cid
   The Way of El Cid is a cultural-tourist route across Spain from northwest to southeast, from Northern Castilla in the interior to the Mediterranean coast. It follows the history and story of Rodrigo Díaz de Vivar, El Cid Campeador, a famous medieval knight of the 11th century and who, together with Don Quixote and Don Juan, is one of Spain’s greatest characters. Unlike the latter two, El Cid is not only a character of literature, but also of history.” So reads the Camino del Cid website, which offers both a road and mountain bike routes along some 1,400 kilometers of pathways and 2,000 kilometers of roads divided into theme-based itineraries running for between 50 and 300 kilometers: The Exile (Burgos, Soria, Guadalajara), The Borderlands (Guadalajara, Zaragoza, Soria), The Conquest of Valencia (Teruel, Castellón, Valencia), along with seven others.

3. The Ruta de Don Quijote
   Along the course of its 2,500 kilometers broken up into 10 stages that pass through 148 communities in the five provinces of Castilla-La Mancha, the Don Quijote route takes in the main natural and cultural areas of the region, featuring livestock routes, historic roads, rivers and disused railroads that provide access to more than 2,000 sites of cultural interest. Along the way, there are plenty of the great outdoors activities: birdwatching, the Cabañeros and Tablas de Daimiel national parks, six natural parks, 12 reserves and six micro-reserves.

Weather wise I think that you will be fine with the first two as they are more in the north of Spain. The third one (Ruta de Don Quijote) may get a bit warm as it will go through La Mancha which usually gets pretty hot in the summer. Mid June will be around 28 C or around 82 F. I personally would go for the Transpirenaica as one would be able to visit those quaint mountain villages and Romanesque churches high up in the Pyrenees.

You can read more about the top cycling routes in this great article: Spain’s top 10 bike routes

We re more interested in cycling in beautiful scenic countryside or coastal areas.
We would have been to Barcelona San Seb and Seville by then.

Wow thank you that's excellent information. I'll definitely look into that article too.
I gave a bit of homework to do, I've also contacted a couple of bike tour guide companies.
Thanks very much really appreciate your advice

Glad I was able to help! :)
The positive of going with a group with a guide is that they will be able to give context and historical background to the areas you will by cycling through, especially since many areas on these cycling routes are siting on literal layers of history.

Just got back from a 5-day self-guided ride from Bilbao to San Sebastian that followed the coastline. The outfitter, Cycle Fiesta, also does guided tours. The area is a bit hilly, especially leaving Bilbao, but if you are fit and cycle regularly you should be fine.