Training for London to Paris

sithebike
sithebike Posts: 213
I have signed up for a charity ride from london to paris.
The ride will take 3 days.
What sort of training do you recommend?
I have worked out a training plan that will see me increase my weekly mileage by approx 10%
Currently I can ride about 60 miles solo. I have recently changed job so in the spring I will be commuting on the bike which is about 40 miles round trip. I would love to use the bike now but the road is quite dangerous and poorly lit.. I would like to stay alive long enough to see the ride!!
Do you think I need to complete a few solo century rides to prepare myself?

Thanks
Simon