Thames Path non winter ultras?

Hey all,

I love the Thames Path, having walked it several times, and am looking to do my first ultra in the next year or two. Problem is, the two ultras I know which take place on the Path are in the winter/early spring. Frankly I'd rather avoid the nightmare of worrying about whether the Path is going to be massively flooded/obsessive checking of weather reports leading up to the race etc. Does anyone know of any other above marathon events on the Path which are after March and before, say, November?

Matt