Zwift training for my first 100 mile ride?

I unexpectedly got a place in Ride 100 :shock:
I had not ridden at all for several years prior to doing tour de zwift recently. Most of my cycle training is going to have to be on the turbo (zwift probably to stop the boredom).
Can someone recommend a turbo based training plan for a 100 mile ride? I’m not looking to break any records. I just want to finish comfortably and not at the back
Ps I’m training for an ultra marathon in parallel so endurance should build up through that too, but wrong muscles.
I had not ridden at all for several years prior to doing tour de zwift recently. Most of my cycle training is going to have to be on the turbo (zwift probably to stop the boredom).
Can someone recommend a turbo based training plan for a 100 mile ride? I’m not looking to break any records. I just want to finish comfortably and not at the back

Ps I’m training for an ultra marathon in parallel so endurance should build up through that too, but wrong muscles.
2010 Specialized Rockhopper
2012 Bianchi Infinito
2012 Bianchi Infinito
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I can’t help with your question about turbo based training plans, but FWIW, I think you may want to get at least a few miles of actual road riding under your belt, before the event, and preferably with groups of cyclists. The PRLS 100 is a large group ride, I wouldn’t want to be riding it with no experience of group road riding, personally speaking.
2012 Bianchi Infinito
Edit: Just looked. There’s a Gran Fondo training plan. Do that!
ABCC Cycling Coach
Despite what the troll says, Ride London is not a 'large group ride'. Riding in a group is not mandatory or necessary - some inevitably will, most won't.
Yeah if you're using Zwift I would just do this. TrainerRoad has a century plan which I have used before and looks fairly similar. The key is consistently following the plan (not because the plan is magic or anything, just because consistently doing 4-5hrs of sensible intervals spread over the week is really good training).
My experience is you don't need to have cycled 100 miles in training to cycle 100 miles in something like this (although obviously it can help). I would try to get some longer outdoor rides anyway but for me that would be more about keeping it interesting (lots of turbo gets dull), checking what you're planning to eat on the bike works OK for you and making sure your position/setup is OK for longer rides. Also maybe pacing; if you're used to 1hr workouts you could find yourself setting off too fast, so it's good to have some idea of what effort you could sustain for that period of time (I guess you might be looking in the 6 hours or so range, not really sure how fast the RL100 course is though).
For me 100 miles isn't really much different from 100 km, once you get beyond maybe 3 hours it is more mental than physical (pacing aside - if you get that wrong it can still be physically difficult).
That’s a good way to describe it
I like Zwift for 60-90 min harder sessions but you need the endurance to ride for 6 hours or so ? You're better off building that up outside.
This. Use your Turbo during the week for shorter and more intense riding, then try and get out at weekends, preferably with others, for a longer more relaxed ride.
I've done RLS100 twice, I'm middle aged and not massively fit and the one thing you'll want to be able to do is to pace yourself. With so many others on the road, swarming like bees, its exceptionally easy to put the hammer down in the first half, leaving yourself exhausted by the time you get to Newlands Corner.
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Oh and riding wheels is s good skill to learn. Both in the real and virtual worlds
The last thing you want is developing saddle sores on the big day!
Also means that you can be certain of what gear to wear and use.
2020 Voodoo Marasa
2017 Cube Attain GTC Pro Disc 2016
2016 Voodoo Wazoo
Preferable to all of these is to ride outside, unless you have a reason to do these longer rides indoors like injury.
Their "Gran Fondo" plan includes a range of workouts from 45-90 mins which build up over time (length of intervals etc.). Pretty typical. As mentioned above you would probably want to do some longer rides outdoors to test pacing, fueling, gear etc. (and because it's more interesting than turbo).
It's here https://whatsonzwift.com/workouts/gran-fondo/ (their workout graphics are a right mess, TR is much clearer IMO)
2012 Bianchi Infinito
I reckon you just want to train you backside to take 100 miles in the saddle. Some really good bib shorts will help.
Juggling long runs and long bikes is a bit tricky but lots of us have done it. If you can get up to 60/70 miles by yourself on the bike the peletons will get you comfortably round the 100.
Indeed. The route is about as easy as a 100 mile route could be as it's almost entirely flat, so getting into a group will help the distance whiz by.