What everyone above says plus: Newton website infrequently runs a "buy one, review it, get one free" promotion. It's the only way I could afford them. However, I still can't run more than 10k in them and that's after years. (Need to use old-fashioned Asics for anything longer.)
Looks like I'll be close to Monaco later this year (well after the GP). I'd love to drive in early one morning and run the F1 circuit. I've looked at it on Google maps/view thing and it all looks possible. A good few junctions and even a car park. Anyone done it? Any advice? Three laps with the final lap being spent stopping and taking pictures?
I realise I'm a bit late for adding to this thread, but...
Just back from doing the Tallinn half-marathon (run on the same day and as the marathon, 10k and some nordic walking events). Well organised with a small enough field that you're quickly out of the crush. Very flat. The route out of town is slightly dull, but improves when you turn around and see Tallinn over the water.
Probably the best medal I've seen.
All runs are on the same course with different start times. The half started 2.5-hours after the start of the marathon which runs two laps of the half-marathon course, so you're in amongst some of the marathon runners on their second lap, but it didn't cause any problems.
Probably the only down sides are the lack of a t-shirt if you're not doing the marathon and the timing is only done from the gun.
I'd recommend the race and I'd recommend Tallinn's old town as a place to visit.