By the sound of it you managed to complete the run so well done. It is hot out there today so that will make a difference especially after last weeks rain! I think you have also answered your own question - slow, slow and then slow down some more.
Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.
Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.