Which are the best institutes to pursue MBA in operation management through distance learning?

Check out this link for top distance MBA Colleges:- https://www.shiksha.com/mba/articles/top-10-institutes-for-distance-correspondence-mba-blogId-6301

The more reputed ones are Symbiosis, ICFAI and Sikkim-Manipal University. You may opt any one of them.

There are numerous universities and institutes, which are offering admission in distance education. You can look for brand name among corporate, approvals, service, flexibility, exam pattern and pedagogy.