That’s so fast! Haha you should go for Boston when you’re 18! 
My bet marathon is 3:27:18 so I have a long way to go for a 3:05:00 cut lol
I’m sure you’ll get there eventually, especially since you’re doing so well at a relatively young age. Do you have any tips for making the transition from a half marathon to a full marathon?
Don’t skip training runs especially the long ones!!! My first marathon I ran 4 times a week with one long run. During my peak I was running 50ish miles a week but I skipped my biggest run (22 miles). Bad idea lol I went a 4:25 or something. I used the exact same training schedule, and without skipping (and of course more knowledge of how a marathon works) I went to a 3:50 something! Your first marathon will be your slowest!
Also it is vital to stay hydrated and energized for the first 13 miles. Drink plenty of water for the first half and do Gatorade the second half. I do all my gel prior to mile 15 and I like gummies for snacks during the race!
thanks!
No problem! Good luck and let me know how it goes!