Hi @bmccartan ,
Personally I would set up your marathon run as your first A race and I might also consider jumping on the user-time constraints beta group (subscribers only). That would allow a focus on the running but you could add your bike and swim days and time availability so that you keep ticking over in those disciplines. Or just randomly swim and bike and Athletica will pick up the training load. Then, once your marathon is over, I would select and change your A race to your 140.6.
My 2c.
Best,
Paul
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