The race is flat by elevation profile but defined entirely by the pavé. The hardest sectors are concentrated in the final 50 kilometers, where Mons-en-Pévèle, Carrefour de l'Arbre, and the run toward Roubaix do the real separating. Riders who stay near the front through the middle sectors and still have the strength to accelerate on the roughest roads tend to reach the velodrome alone or in small, shattered groups. Positioning, equipment choice, and the ability to hold speed over unstable ground matter more than peak watts. Teams can try to control the front, but the cobbles overrule tidy tactics very quickly.
Pave Sectors
Nearly 30 numbered cobblestone sectors rated from one to five stars. The race is shaped by which sectors the peloton hits together and which ones split the field.
Arenberg Forest
The most iconic sector: 2.4km of rough, uneven cobbles through a sunken forest path. Mechanicals, crashes, and chaos happen here every year.
Carrefour de l'Arbre
The last major five-star sector with 15km to go. By this point the race has been broken apart and only the strongest remain.
Roubaix Velodrome
The finish inside the open-air velodrome, where riders complete 1.5 laps of the track. One of the most dramatic finish settings in sport.