Creatine is generally considered to be a waste of time (but I'm sure you'll find some recommendations for it somewhere), but don't worry, running marathons opens up an entire new world of supplements that you've probably never heard of before to obsess over.
Including, but not limited to:
Beetroot (juice, concentrate, natural or powdered)
BCAA (Branch Chain Amino Acids)
Conjugated Lineloic Acid
About a million different types & sources of carbs
Feel free to experiment, but it can be a long and expensive road and can turn obsessive as you look for a better type of protein etc.
Personally I found beetroot, BCAA and caffeine to possibly offer some benefits (and of course carbs).
Wiggle still do the classic style, but don't seem to do the Bikester any more. I had a pair of each some years ago and they're probably still running on their own somewhere today. T.B.H most people have evolved to thinner lycra tights as they're more comfortable and the tracksters are a bit too '1980's PE teacher'.
Just buy a pair from a well known brand and you won't really go wrong. I've had pairs from Ron Hill, OMM and a few others and they've all been okay.
I'd say that you're still a runner as long as you think you are. If you have the mental attitude that you'll be running again as soon as you get over whatever it is that's stopping you, then you're a runner.
In the meantime get involved by volunteering, making sandwiches, taking photos, anything really that keeps you in with the running community.
I was out for most of 2016 due to injury, but always thought of myself as a runner undergoing a temporary pause. I'm now back running again and planning 2017.
Thanks everyone, I've not checked this thread in a while.
I like the idea of the cross country. I've done some trail and hill running and may well step back up to it. I'm thinking of registering for a middle distance adventure race in the spring which will involve 18km of hill running in two stages, so better get some training in !
Thanks ringo, I'd never thought of the LDWA events, but could see the attraction. I may look into a local group and see how it goes.