There's no shame in walking parts of this race! As the name suggests the Bath 'Hilly' Half is a tough one and probably not the best choice if you havn't done a half marathon before.
The challenging course starts at the winning post at Bath racecourse. It is a two lap course consisting of steep hills, rough tracks and several styles and kissing gates. 85% is on rough tracks, 10% on grass and around 5% on tarmac. There is a total ascent and descent of 526m - that's tricky!