Pros:
- easy packet pickup
- organized start corrals
- scenic course
- great crowds and support
- friendly and helpful volunteers
- the finish line is the greatest one i've ever experienced, EVER
- i've never experienced a more organized race, everyone around the world take note: the Brits have their shit together when it comes to race organization
- the pre-start 'Number 1 and Number 2' facilities were great, going 'Number 2' was quick, but going 'Number 1' was even quicker, bravo London!

Cons:
- everything was out of plastic bottles, the energy drink came in a 20oz bottle, not very green London!
- should've been better post race festivities