Training

So I'm increasing my distances now and hitting 100km and although I'm feeling good at the end of them (exhausted but still good), I'm getting really painful calves and I'm not sure why.

Olmo Giro winter/training steel frameset, size 52.
Solid, dependable lugged steel frame made from Deda CroMo tubing.
Horizontal dropouts, twin bottle bosses, braze-on front mech mount, unicrown fork with threaded steerer (got a threadless adapter if you need it), clearance for muddies and up to 28c tyres. Comes with 1'' Shimano Ultegra sealed headset & Oval seatpost. There's an Isis BB fitted but I can be remove it if not needed. Italian thread BB shell. Top tube length is 52.5cm c/c. Seat angle 74°.

Have been using the sufferfest videos for a few months now on the turbo. I have to say I think they are great. They really make you work. Anyone else used them and what are your thoughts.

Have a budget for a new wheelset for racing and also training daily (replacing the wheels which came with my CAAD 8 TIA which have been thoroughly destroyed my north london's best potholes ) , around £250 but could push up to £300. Thinking of building a set with 105 or ultegra hubs but I'm not too sure about the rims - any ideas?

OR.. scrap the building and get fulcrum racing 5's or fulcrum quattro's???

I'm doing the wheelbase spring classic next sunday (my first sportive)

I have been doing regular 50+ rides over quite hilly roads for a few months now and doing intense 60 - 90 min sessions on the turbo when I'm away at work.

The question is: how much riding should i do the week leading up to the event.

Im not planning on doing much though any pearls of wisdom will be greatly appreciated.

Morning folks,
A few of us in the club are planning an assault on next year's TdF Yorkshire stages, to be ridden on 6th/7th April this year. It's about 120 miles for each day, plus a 20 mile transfer between Harrogate and York (no coach transfer for us!).

Clearly, we'll be riding this a bit slower than the average Sunday ride to ensure we get round.

I've stepped up my riding to four times a week (about 10 hours), plus 1 or 2 gym sessions. I've also cut out the sugary treats and have dropped from 75kg to 71kg over about 4 months.