Long distance commute advice

As to kit I use Decathlon B-Twin shorts, jacket and gloves (700 range) with a base layer and jersey appropriate for the conditions. Have used the same pair of Shimano SPD shoes (M088 I think) for four years. The Decathlon kit is hard-wearing and cheap enough not to worry about trashing it. The pad in the 700 series shorts is easily up there with £100+ shorts, suitable for 3 hour rides even for me.

For me mudguards and at least 28mm tyres are essential. I hate charging stuff so also run dyno lighting. I ride a Merida Cyclocross bike currently which is ideal for my off-road sections but wouldn't be my first choice if I was just riding roads. I'd go with disk brakes over rims but that's really dependent on how much braking you do and what road conditions are like. 

If I was speccing a new bike I think I'd probably go with a 10-speed setup as consumables are cheaper. Might even go 1x. Almost certainly steel. Probably a Fairlight or Planet X frame (I'd like a Mason or Kinesis but would feel bad about the abuse dealt out to it being chucked in the back of the car on a year-round commute.

You're getting plenty of practical advice on this thread but one thing that needs re-iterating is that a mixed commute can really reinvigorate your cycling. Yes, your last few miles are likely to be the same but the awesomeness of having the flexibility to chose your distance and start point can't be overstated. I completely love it and it means that I'm much more likely to cycle even on the worst weather days.

Also, just because it gets weird looks and pisses drivers off I've started driving in my helmet and hi-viz

Good point about varying where you park. I've had no security issues in the four years or so I've done it but when I started using the same spot someone took exception and starting parking right up behind me so I had to move the car forward before I could put the bike in. Some people think they own the road outside their houses.

As cyclesteffer says there has been a big growth in this in the past few years - I was one of the few doing it at my workplace but now lots more doing it. I've just started using Komoot which is great for finding offroad/quieter routes.

I think there's a future for dedicate Park/Cycle sites with showers, repair facilities and perhaps even launderettes. Would certainly make sense down here in the New Forest and reduce pressure on in-Forest car parks which are often full of cars with empty bike carriers

Try partial commuting. (e.g. Drive the first bit) Keeps me riding all week.

I have a Golf Estate with a Yakima roof carrier. Takes me 20 seconds to take the bike on or off.

My commute would be 18 miles the full distance, but includes some horrible dual carriageway, so I dont often do the whole way, only if its really nice weather.

I generally park 10 miles away from work (varying the exact parking area depending on how I'm feeling), take the bike off, and get cracking. I'm in my fourth year of doing this.

It works an absolute treat, helps me beat the traffic, keeps me riding all year, and I never feel tired.

I've usually done about 85-ish miles during the week, and then have plenty of energy to do a 40-60 miler with my local cycle group on Sunday.

Top Tips would be - vary where you park up - if you are leaving it in the street, park in different places. This stops you annoying local residents, although I 've never had a problem at all.

Get a removable, durable car seat cover, then it doesnt matter how sweaty you get, you just lob it in the washing machine now and again. You can get easily removable, washable ones from car accessory shops dirt cheap.

Shimano MTB SPDs are easy to drive in. (Not SPD-SLs!)

There is a whole "secret world" of people doing the same partial drive-bike commute, when I started four years ago, I never saw anyone else doing it - now there are usually about 10 other cars parked up doing the same thing as me, and I see lots of it going on, on my commute in.

Funnily enough I also have a GT Grade (Tiagra version - love it!)

I currently commute that kind of distance but not daily.   I like to start at 8 AM so if I commute in i set of at between  5.30 AM and  5.45 to arrive just before 8 am for a shower. Also I tend to drive to work with the bike in the back, leave the car and cycle back to work next day or thet day after if I work from home . I tend to cycle both ways on a Friday or the last day of the week  I do not work from home. also if the weather is bad or if is too dark in winter I park the car mid way and do a partial commute. I tend to vary it to keep it less boring. For instance in the afternoon when cycling home  I take the 69 km route avoiding traffic. In the morning i t tend to take the directer  routes which are between 53  and 58 km,  or if it has been dry I combine in some off road and canal routes. When first doing it i was painful to to walk the dog afterwards but i am ok now. I would not want to do full distance both ways though, 5 days a week.

I gave up on commuting by bike when my journey went from 17 miles to 38.  I keep on trying to talk myself into trying it, but its 38 miles through London and back out the other side.  

I see enough crap driving out in the Surrey hills on back roads, I'm not sure I could bring myself to commute in London again.

I need to get myself a job out Dorking/Guildford way!

Edit: my breakfast hint, a couple of scoops of ground oats with a scoop of protein powder mixed up with some milk.  Easy to leave in the office and takes seconds to make, will keep you going till lunch, basically cold, flavoured porridge.

I used to do 26 miles in each direction by road. Like you're planning, most weeks were 3 days per week (some only 2, and occasionally 3 or 4 days back-to-back). Seems like you're starting from a decent level of conditioning and 3 days is realistic.

Logistics are a pain as soon as your commute is over a few miles: change of clothes, showers, and all the kit that goes with it, breakfast lined up somewhere - but again, you seem like you have that covered too?

I've never combined cycling commutes with any other transport: can't be bothered with the additional logistical hassle, and I suspect you won't too, if the rides are doable? Give it a go and ferry kit in the car, as daveyraveygravy says.

I do something like what you are planning, some of it on a 2015 Propel. I say "something like" because no two weeks are the same, sometimes I ride 3x, sometimes 2x, and then again sometimes 4 or 5 times a week, sometimes none. I usually do a 3-4 hour ride at the weekend too. I live at the bottom of the South Downs, so at least once a week is a climby off road commute.
If I were you, I'd aim to do your commute two days a week at a slow pace and see how it goes. Have your work clothes there, take them when you drive. You've probably got all the kit you need, I go with layers so if I get too hot I can take some off.

60 miles a day ontop of what type of Job?    Doable if paced correctly, you would need to have some sort of food and drink at the end of each journey or you'll begin to deplete energy.  3 days a week with rest day is a good idea.