Thanks for the good lucks. :-)
Adora I've been reading the sort of post-match analysis in the FT about all the terrorist hits so that I know how they work and what to do if I get stuck in one, but I also found this useful thing:
www.gov.uk/government/publications/counter-terrorism-protective-security-advice-for-major-events
The basic thing is that if there is a terrorist event and you are in it you need so be able to find what's called ballistic cover, which basically means you need to hide behind something bulletproof like a wall or a tree or a bridge or a mud bank. It's like playing a very grown-up game of dodge-ball. Then the organisers need to be able to evacuate the area swiftly. I've been looking at the race route and they've planned it very cleverly, with lots of safe places to hide and loads of evacuation routes.
The old race for life route was just round and round the park, with nowhere to hide and no evacuation route, as the park is edged by a deep, fast-flowing river. I really like the new route. I think they've thought it out well, and that gives me a lot of confidence.
Dh says that statistically I'm more likely to be hit by a falling rock, but I do like to do my homework just in case. 