Mine was on Saturday when I went out for a road cycle - hadn't realised it was quite so windy and it was against me for the first 15 miles or so - had been up several decent hills and was about 5 miles from home going along a flat, straight road which is fairly exposed. Reader, it may have been slightly wind assisted but my speedometer reached 30.3mph!!!!! On the flat!!! For a couple of hundred yards!!.
Managed to sustain at over 29mph for several hundred yards! I was SO pleased with myself.
Anyone else got an exercise achievement they want to brag about? 