Two weeks ago I started commuting 40 miles a day, 4 days a week, total 160miles. I think I've lost about a kilo so far, I can feel my trousers getting looser at the waist. This was from no commuting before 2 weeks ago.
I don't think I can keep up that mileage, so starting this week I will be doing 120 miles instead. If I try to eat a bit less or at least don't eat any more than usual, I think should reach my target of 70kg say within 2 months, I'm about 73kg now.