Fforest Fields is (are?) fflooded, so the race will not happen tomorrow (Sunday 14th). No doubt a new date will be decided upon.
If you’re left frustrated by this cancellation, you could try Breidden Hills (11km fell race). Start from Criggion village hall (between Welshpool and Shrewsbury) at 11am. Beware though – heavy rain is forecast for the late morning. You would also need kit: waterproof top and trousers/leggings, hat, gloves, compass and whistle. The course is marked, but there are a couple of steep descents.