I finally had an opportunity to run at quite a high altitude - at 8000 feet along the rim of the Bryce Canyon in Utah, USA.
It wasn't a very long run - only around 20 minutes and I grasped the opportunity by running while dressed in jeans and wearing simple trainers. Half of that run was uphill and it was a fair effort to do so.
I may be able to get some more runs done in Las Vegas and Honolulu on our way home - but then I have to get back into the saddle for a HM in September.
Did anybody see the 92 YO lady who finished a Marathon this week in San Diego??