The route includes three intermediate climbs. The first being the Forca di Arrone, which is almost 6 kilometres long and leads into the Rieti Valley.
Following a predominantly flat section the riders crest the Sella di Corno around midway. The 14.1 kilometres climb averages 3.7%, while the first 5 kilometres are the hardest part. Still relatively easy though with gradients hovering between 5 and 6%.
The riders descend towards the outskirts of l’Aquila to tackle the Passo Capannelle. The 13.8 kilometres climb on wide asphalt slopes at 4.5% before a long downhill – almost 30 kilometres – flies down to the foot of the last climb.
Featuring 22 hairpins, the climb to the Prati di Tivo skistation is 14.6 kilometres long and the average gradient sits at 7%. The ascent returns to the Tirreno-Adriatico after eight years. In 2013, Chris Froome celebrated in Prati di Tivo.
The first three riders on the line gain time bonuses of 10, 6 and 4 seconds, while the intermediate sprint – halfway up the finish climb – comes with 3, 2 and 1 seconds.
Another interesting read: results 4th stage 2021 Tirreno-Adriatico.
Tirreno-Adriatico 2021 stage 4: routes, profiles, more
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