Cyclable gravel pass roads in the Pyrenees
There are several worthwhile passes to visit in the Pyrenees with a road bike where the road is not paved.
I only list passes that I have visited myself on this page.
Pass names in italics are difficult to cycle to and may require some walking.
Pass names in strike-through are strictly walking passes, but are included since I have been there.
Passes with an (*) are on the way to/from another pass (no.) in the section.
– If you cycle over the other pass you will have visited this too (without extra climbing).
(Scroll to the bottom for some further comments.)
Cycloclimbing.com

Under construction!

No. Name of passHeight (m)
1. Col des Laquets & Col de Sencours 2637 & 2378
2. Port de Rat 2540
3. Col de Portet 2215
4. Col des Iris 2030
5. Col de la Sansa 1775

I sometimes use the (slightly modified) notation method for unpaved roads and paths from Centcols.org and their Chauvot guide: R1 is cyclable unpaved road. R1-2 is cyclable with difficulty on a road bike bicycle (MTB is recommended). R2 is where you will have to walk (with a road bike in any case). R3 is difficult to walk. S1 is a cyclable path (few such exists for road bike cycles). S2 is walking path. S3 difficult walking. S4 means carrying.
I give reference numbers to the Chauvot guide and to other guides from Centcols.org .