If you start a training plan for racing you might not like it. There are plenty of plans in the web. But I'd suggest doung intervals once a week. Ride balls out for 2 rides solo orin with friendsthe for 90 min eachwalk day then one long ride like with a club for a couple hours on the weekend.
The short rides will keep your power up and the club ride will keep you on your toes and make you hold those power threshold longer.
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Rule #10 // It never gets easier, you just go faster.