It's a little hard to say without knowing what your base level of fitness is and what your expectations are on how much "speed" you are after in your century. And I am presuming we are talking a century of miles here rather than a metric century...
If you have some level of base fitness, then I would say "yes" as long as you are prepared to lower your expectations to survival of your century rather than going in gangbusters and setting your world on fire. Save that for next time.
I say this as a person who had some disrupted preparation for significant riding challenges this year and did ok using alternate training methods.
I was invited to be in a team for a 24 hour mountain bike race a week after I was supposed to be going on a cruise for a week. So all of my final build up was done on an exercise bike in the gym of the ship and running up and down the zillion flights of stairs. I jumped back on the bike within an hour of getting home from the cruise and promptly fell off and bruised my ribs because the world was still rocking for me but the bike wasn't!But I made it to the event and rode really well considering.
Later in the year I was on holidays with my DH and daughter in Hawaii a week before we were to go on the Cycle Queensland (a 9 day cycle tour which we were all doing with the daughter behind me on the tandem - that's hard work). Again the exercise bike in the gym copped a pounding, along with the elliptical. We handled the tour well - although the second day of 94km with lots of hills was a bit of a pull for the 10yo daughter and so an even bigger pull for me on the front!
I then did a metric century a few weeks later with some workmates and had an absolute blast and could have ridden off into the sunset at the end because I was having so much fun it was a shame to stop at 100km!
Anyway, the moral of all this blather is that you can't expect to prepare by doing NOTHING for the two weeks you are away from your bikes and working those long hours. You will still have to do something. Perhaps you could think of your weeks at home with your bike as your "building" weeks and put a heap of work into them - incorporating a variety of preparation including strength.
Then make sure you use the hotel gym, regardless of how tired you are after those long days, to make your weeks away your "maintaining" weeks and just concentrate on not actually LOSING fitness. Just try to keep up the cardio work and maybe if there is a decent exercise bike do a little bit of work with some intervals.
Hey - this is not the optimal preparation for a century we're talking about here. But life is too damned short to put off doing things that are important to you, and those little adventures and challenges that make life interesting!
I believe that with a decent fitness base and a reasonable expectation that it is going to hurt, that you may be a bit slower than you'd like in a perfect world, and that you may not be ready to get up the next morning and do it all again, you should be able to ride a century.If you want to do it, give it a go!



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But I made it to the event and rode really well considering.
If you want to do it, give it a go!

