Road
Semi de Boulogne
Semi-Marathon Christian Granger de Boulogne-Billancourt
Boulogne-Billancourt, France
Distance
21.1km
Elevation gain
+60m
Start
Avenue André Morizet, Hôtel de Ville
Finish
Hôtel de Ville de Boulogne-Billancourt
A famously fast late-November half looping the Seine quays of Boulogne-Billancourt, past Île Seguin, the Pont de Sèvres and the Albert-Kahn gardens — the flat two-lap course where French road records tumble.