I'D like to recommend Third Rock Adventures, a travel agency based in Kathmandu for Three passes trek or any trek in Nepal. I did ABC trek back in 2018, Langtang Trek in 2022 and this trek this year. They never fail to amaaze us. The founder, Mr. Naba is the man behind all this. He has a team of expert, handling every work with great care and consideration. The price is great, no word for service and most importantly, the guides are highly expert. Go with them and you will feel for yourself.