This was the first GOTM I have participated in. What a great game! The GOTM competitiveness really pushed me to pay more attention to becoming more efficient. I made quite a few missteps, but I know what I did wrong and will try to cut those weaknesses out of future games.
Science VC: Turn 266
Sometime around turn 100ish, i quit out without saving, so I ended up replaying about 10 turns. That's why I didn't submit. This was really good practice for me anyway.
I had 6 cities- i think 23, 22, 20, 19, 18, 13 pop at the end, 1350-1400 bpt.
Rushed GL(Philo) -> NC into Tradition 4 cities -> 2 points in patronage (probably could have gone straight into rationalism if i beelined Acoustics) -> left side rationalism -> 2 points in order (to delay free 2 techs) -> rationalism finisher
No one declared war on me the whole game, everyone stayed pretty far away. Late in the game, I declared on China late to take this random city they popped up in the jungle near me (nice science spot, but no mountain) they wanted to give me another city for peace, but it was far away from my empire, so I took all their luxes and like 200 gold, 40 gpt instead.
Dido took out England pretty early and then was warring with Spain most of the game. The westside civs were warring a bunch too, but no one messed with me.
Is Emperor always this easy?? Or is it just because we had so much distance from the other civs? It was also really easy to pull wonders, even when it felt late. I guess I'm just used to immortal.
What I did well:
Picked really good city spots - Beautiful Petra spot
Efficient use of GEs (rush Petra and Hubble)
Timed my faith and HS to found and enhance a religion in back to back turns
Kept enough jungle to not hold back my growth or production, but maximize science
Had alliances with almost all CS's at one point or another
Scouted the pretty much the entire landmass by t100
Kept my empire in positive happiness
Ended up having #1 army by building just 4 military units and getting the rest from CS's
I never got beat to any wonder I wanted to build.
Things I screwed up (not in order):
Probably could have GL popped Theo, but got other techs while it was building instead of Philo
Bad use of gold, I used gold that probably should have been used toward science buildings
Held my GS's too long, probably could have saved 5-10 turns, bulbed em all too close to the end
Bad micro of workers
Unfocused teching - I was all over the place
Had excess happiness and should have founded at least 1 more city
Should have done more RA's instead of trading my copper out to break the AI's banks constantly
Should have expanded sooner
Didn't realize I had enough gold for settlers for a few turns after I did
Probably could have gone tradition finisher straight into rationalism if I beelined acoustics
After missing rationalism with my first SP after tradition, I delayed renaissance too long and had to wait 1 more SP for rationalism
Poor tile improvement choices in my plains-heavy city
Got coal later than I should have
All in all, I had a lot of fun and am looking forward to participating in future GOTM's. I'd never really played with "win in the least amount of turns" in mind. Thinking about that, you really notice your inefficiencies. I have a lot of things (see above

) that I need to tighten up.
I want to revisit this one sometime in the future, I think I could cut it down to near 200 turns if I focus more.
I'll post a screenshot of my final layout tomorrow, when I get a chance