Posted: 25/07/2014 at 20:35
I must be the odd one out. I prefer London for the running experience - Paris for the friends experience. Although London is certainly more crowded, I had no trouble getting a good pace immediately out the gate (3:40 ish marathon pace) and holding that until 14 miles - at which time my pace dropped dramatically but that was my fault, not the race's. London's support is fantastic, but I think the course is also better in some respects. In Paris, miles 20-25 ish are very boring - a time when you need support and interest and you have neither.
But, int he end, we are comparing two fantastic races - can't go wrong with either. The recently released running statistics quoted on a podcast I was listening to showed that both races were amongst the top 10 popular worldwide.