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Via Cycleliciousness, who we seem to be linking to a lot recently, come the following statistics:
The Netherlands - 1019 km Denmark - 958 km Belgium - 327 km Germany - 300 km Sweden - 300 km Finland - 282 km Ireland - 228 km Italy - 168 km Austria - 154 km Greece - 91 km France - 87 km UK - 81 km Luxembourg - 48 km Portugal - 35 km Spain - 24 km
Those are the average distances cycled by a person in the country, in a year.
To put the figures into perspective, I cycle from Springfield to just west of the town centre, and back, five days a week during term-time, with one extra trip a week to Hurworth on most of those weeks. A usual day is about five miles in total (8km), which takes me about 15 minutes each way.
In a year, this, plus some other short local trips, gets me about 1000 miles (1600km), about 60% more than the average Netherlander. In two weeks of commuting, I match the UK average. I did double the UK average in one day this year!
For someone with a "proper" job, who would work five days a week for 47 weeks of the year, less than a mile and a half each way for a cycle commute would get you Holland's average.