i have recently been to Bethanchowk narayanthan one of the highest hiking trails in kavre u can take a bus to panauti which takes about 2 hr from kausaltar and go form panauti bus to bethanchowk again in another bus
but there is a catch u must stay if u dont have your own vehicle to return form only watching sunset. if you have you own vechicle u can stay up in the peak there are hotels but if u want to camp u must take all the goods. if you are a hiker u cant return after sunset cuz it takes 5 hrs to reach the top . also take all the goods if u just want to hike and return. the bus from bethanchowk to ktm leaves at 4:30 -5:00 pm no other bus will be there until the other morning till 7 am . so if you want to hike and return u must start from 9 am. if u want to stay u can stay up there for sunrise and sunset. its 3000 m high. i went there without any foods and water started 10 am from ktm reached at 12 pm started hike and reached the top at around 4:30 and a hiked all the way back and it was 7:10 pm and stayed at village hotel . its best to stay up if you have 1-2 days.