A couple of years ago I remember a challenge race between Spain's Martin Fiz (a world champion marathon runner) and US postal cyclist Rubiera. The race was to be conducted up the last 6 km of Angliru. The Angliru is reputedly the most difficult paved climb used in pro cycling. The last 6 km was choosen as this is the steepest part of this climb (so no advantage to Rubiera) with gradients that go up to 22%.
Does anyone know if this race took place and what the result was?