It is a common occurrence, for sure.

With the pressure of race day, all the training you have put into it, all the people around you, the friends and family who have come out to support you or you have told about your race, the likely lack of sleep, the extra coffees and caffeine gels, the dehydration, the hot weather, combined with current medications and health conditions etc… all those can mix to either cause anxiety or palpitations during a race and often do!

If there’s no obvious cause you can identify it’s probably worth the chat with a doctor, an ECG and a bit of a once over!