Sadly it's wind down in athletics after the grand prix running week, there is races all week up to Friday evening, night before MGP practise starts. So you available Thurs/Fri ?
Or are you chicken

UNLESS you like fell running there's one on 24th but you'll be busy getting ready for your final practise

THEN again if you plan to stay for week after on the Friday there's
a race just over four miles at St Johns.
Have a look round see if there's any near you, I could pop over!