from Aurillac take the N120 (Re signed as D1120 in places) to Argentat (duel carriageway and very streight to start) from Argentat take the D18 to Egleton where you will pick up the D16 to Treignac and Riders Rest.
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Approx 5.5 hours with stops from Aurillac take the N120 (Re signed as D1120 in places) through Argentat all the way into and through Tulle to Seilhac where you pick up the D940 all the way to Treignac and Riders Rest. - You can get congestion on the N120 and Tulle can be complicated uless you have s...
If you want to get really adventurious you could do option 1 with a detour up to the Volcano Puy Mary This is the one I would do ;) From Aurillac cut through the centre and take the D17 up to Puy Mary, at the top of puy Mary hang left down the D680 until you join the D922 to Mauriac where you take t...
The D922 from Aurillac to Bort-Les-Orgues is a good fast road wide tarmac with a good surface and rides into the Volcanic Region of the Cantal. At Bort-Les-Orgues (By the Dam) take the D979 to St Angel, Meymac (Take the D36 until you re join the D979 - do not go on the D979E3), Bugeat, after signs f...
from Limoges follow the N21 all the way to Tarbes approx 250 miles, a goodly selection of everything from long straights for a blast to hairpin bends with pleasant scenery to boot