Dear Elaine,
Thanks for the opportunity to get a plug. We have our Prague tours on line at www.leisurepursuits.com and we usually have the largest group from the UK of around 50 runners at both half and full marathons. We have choice of 2 hotels both on Wencleslas Square so you can fall out of bed and you will be on the start line.
Sorry for the blatant advertising.
Regards
Mike Gratton