How far to commute?

[fireblake]

I travel 17ish miles to work but I'm in for half 5am on days and half 5pm for nights,  it's supposed to be a 12 hour shift but is usually 10. I normally ride my bike but have hurt my shoulder and really struggle to manoeuvre the bike at either end.  I'm using the car at the moment and hate it. I don't mind bad weather but dislike ice or snow. Missing my bike so much. I've done the morning journey in under 15 minutes in the summer. But usually it takes about 20 and home time is 25. I wouldn't want to commute any further though