For the first time I will be driving from BKK to CM.

Which route is the fastest and takes into account any newer or expanded roads?

via

Phitsanulok / Uttradit / Lampang (117, 11)

or

Kamphaeng Phet / Sukothai (A1/1, 101)

or

Kamphaeng Phet / past Tak / Lampang (A1/1, A2/1)

my response on travel forum

IMHO, Kamphaeng Phet / past Tak / Lampang (A1/1, A2/1)

IMHO, Kamphaeng Phet / past Tak / Lampang (A1/1, A2/1)

Without doubt the best and easiest route the roads are good also. Ive done it 5 times now and it usually takes me 7 hours with a couple of drink/toilet stops.

IMHO, Kamphaeng Phet / past Tak / Lampang (A1/1, A2/1)

Without doubt the best and easiest route the roads are good also. Ive done it 5 times now and it usually takes me 7 hours with a couple of drink/toilet stops.

Great - thanks very much everybody