Are there companys in chiang mai that do visa runs.

Like the companys in pattaya where you can go on the mini bus all in service.

thanks

You can do the border crossing easily yourself.

All Seasons Travel at Thapae gate do a return mini bus service to Mae Sai with local pick up for about 600 Baht.

I beleive the OP is asking for a visa run company (where you go to a Thai consulate and apply for a visa) instead of doing a border run.

I don't think they have this service in CM. You have to take the bus from Arcade busstation to Udon Thani and another bus from there to Vientiane. Make a short holliday out of it, could be fun.

You can also fly from Chiang Mai to Udon with Nok Air and then a mini bus to the bridge in Nong Kai.