As I am in training for the London 2 Brighton 100k, I thought that I'd share my core and strength training schedule with you.
I must admit that I have never really done enough core and strength training previously, only really dabbling here and there on the odd occasion, however I started to take this training more seriously before doing my first ultra marathon last year.
Since the beginning of 2021 I have worked these exercises into my training plans in an effort to build up my overall strength, flexibility and stability.
Trial running really works all the leg muscle groups and your joints pretty hard, especially when you are on the trails for several hours at a time, so it's super important to get your muscles in the best shape possible to be able to handle the battering and stress that you are exerting on them.
Personally I think doing strength and core exercises once or twice a week is enough to give you a good base on which to excel your running, and of course building in some additional cross training, swimming and yoga can all be benefical as well.
The most important thing is to find out what works for you by seeing how your body responds, and by working out how much you can fit into your weekly schedule without over exerting yourself.
Anyway below is my current workout and a PDF which links to some video content that I used to ensure I was doing the exercises correctly.