I started Keto the day after Thanksgiving and I am down 35lbs so far. The only experience I have riding was the first week i started keto and that was rough lol. I don't expect to have any issue when I can finally start riding again in a month or two when it gets warm enough.
Be careful on cutting your fat, it supposed to be higher than the protein because that is your fuel now. I know it goes against what has been pounded into our heads our whole lives buts you really should use a calculator and stick to close to the fat amount it gives you, especially when you are no longer trying to lose and want to maintain. Also fat is what keeps you full for so much longer than carbs/protein.