How do I address a 20 day vacation right in the middle of the second block of my base training?

The second block of base training is the second of three parts to my meso base period, this period is crucial to build a strong foundation...

I'm suppose to go to Scotland this winter for 20 days to visit my family and will have limited access to training facilities... How to I do this w/o compromise to fitness?

Would it be smart to just pause and continue the base training when I return, or revert back to a previous period such as Base 1, or simply continue with training as if I never missed a workout?

Do I have options?

20 days is a long time to go without any training. Either find something aerobic you can do on vacation, running, skiing, rowing, etc, or you'll need to go back and start over as whatever you did in the previous 3-4 wks will essentially be lost.

Exactly. When my wife and I visit family for just a week, we get up early every morning and run, rain or shine. Gotta do at least that. That doesn't substitute for what we would have done, but we don't lose as much.

Since we only do athletic vacations, those are our goals. We train for vacations. Visiting family doesn't count as vacation.

hm I guess this is more of an issue that previously thought.

What will I need in order to sustain, so I can continue as if I simply paused my training

I can see 10 hours of riding per week with one 4 hour ride + 2 x1.5hr with threshold intervales - will this be enough?

20 days is a big time. Cant go without training. Training matters alot.

Like everything else in life, this is just up to you. We have no idea of where you are in your cycles, etc. But that's probably good, depending . . .