Climb every mountain in Joburg... and tales from the Vienna woods

There's been little time for running, and even less for writing about running. Blame the Rand Show for the first two weeks of silence, and then blame Vienna for the next. After a spell at the Popular Mechanics stand at Johannesburg's big Easter show, it was a day's rest and then straight back to the airport to head off to the Vienna half marathon.
Yes, this is about running and cycling in and around Cape Town. But it's worth comparing what is available in other parts of the country ... or other parts of the world. No graphics and no full descriptions until I return home because I haven't brought along the laptop, but some thoughts in the interim.

• Johannesburg, Northcliff: Our usual B&B when we're working at Nasrec is Rockridge Manor in Fairland. This is ideally located for some testing runs where almost nothing is absolutely flat, and all of it is at altitudes that severely challenge sea-level runners. I've run up Northcliff Ridge before, but this time decided to document the run. Free advice: maps are good, but remember that the shortest distance between two points on a map may be almost vertically up a rocky hillside.
• In Vienna, we're based northeast of the city centre, across the river in the semi-rural area of Gerasdorf bei Wien. It's at a couple of hundred metres above sea level, and mostly flat. It's also, at this time of year, uncomfortably cold, with regular rain and sniping winds. The forecast for Sunday's race says sunny and 18. That will make a welcome change from cloudy, rainy and single digits.