I am a US citizen currently in Thailand. All of the entires on my triple entry visa have been used, and yesterday I extend the final visa so I am good for about 29 more days. Ideally I would like to stay 1-4 more weeks after the extension expires before returning to the USA.

I am in Chiang Mai. Can I go to Mae Sai and will I be given an additional 30 days? Even 15 would be OK and even 7 might work.

Thank you!

You can try !

Or another tourist visa can be applied for In Laos

If 15 day = enought, make a border run. Otherwise an other sigle touristvisa fram Laos are where you want.

If 15 day = enought, make a border run. Otherwise an other sigle touristvisa fram Laos are where you want.

A US citizen gets 30 days at the land border.

Unlikely that you will be refused.

Maybe a good idea to have a (flight) booking and sufficient cash to show.

Removed a flame and the replies to it.

I am the OP. I appreciate the responses so far and hope for additional confirmation that I will receive a 30 day entry stamp at Mae Sai when the extension on my current visa expires.

Yes you will get a 30 day visa exempt entry at Mae Sai. You can also extend that entry for 30 days at an immigration office.