There are many routes to reach Everest Base camp so it depends on your route but most EBC treks take about 15-20 days. Nepal Trekking Trail will help you to reach the base of Mount Everest. You do not need to rush to reach the Everest base camp because of drastically change in altitude. After landing in Lukla (9250 ft.) and you have to go to Everest Base Camp at 17,500 ft. If you plan to go too fast you will get altitude sickness which can be deadly in Himalayas.