Doing a fair amount of ice & inline skating - respectively during Winter and Summer - but so far I've only gone rogue over frozen water in Harbin (Songhua river), the Summer Palace in Beijing (Kunming lake see last photo below from 1992) and as a teenager at Boekenbergpark in Antwerp (bit less exotic location).

110 kilometers from Soissons to Senlis
between the rivers l'Aisne and l'Oise
crossing the forests of Compiège et Chantilly.
Walking mankind conquered the World, even in recent times uncharted territory at both Poles and highest mountain tops could only have been tamed by Foot. My ambitions in this field are far more modest - considering every single square metre on earth has already been trampled on - however my own small walking-projects allow me once-in-a-while to fully appreciate our living-space, and enjoy meditation on the road.
Alas I was unable to close the loop on Saturday 12th August, walking the 100-kilometre through the Antwerp, Flemish-Brabant and East-Flanders provinces, joined by 8.4k fellow nutcases, who started their cavalry on Friday 11th August at 9 o'clock in the evening from Bornem-centre.
Below my personal account on walking down GR-12 from Brussels (Belgian Capital Region) to Montcornet (past Rocroi) in the French Ardennes split over 2 holidays: Brussels-Charleroi in 2005 and Charleroi-Montcornet in 2006.