How big are the groups on our Everest Base Camp treks? We try and keep our groups relatively small although with the trek becoming more and more popular our group sizes do differ between 4-8 people on the quieter routes and slightly larger groups of between 10-15 people. When we have groups of 8 or more we also provide additional support with assistant guides, sometimes more than 1 if needed. We find that teams or groups of this size with additional support get the personal guiding experience that works well with getting to Everest base camp.
I've seen some very large groups on the trails, some of up to 40 people and with only 1 guide and in my opinion, that's too many. We find that with the mid-size groups of below 15 people, you will get more time to spend with your guide and porters and get to build those friendships. We also find that when a group gets to know each other more, the more successful those teams are at reaching Everest Base Camp. This is due to the fact that they work as better teams instead of having a huge group where some people do get left out.
There are days where you're not quite feeling 100% yourself due to fatigue or maybe the effects of high altitude and the more you bond with your team members, the more the team pulls everyone together and the better chance you have of reaching Everest Base Camp.