Wonderful route (all paved) in the Chasseral region. Few km to warm-up then at km 7 (Twann) starts steep climb of 4km. Next real climb is at km 27, when you suddenly turn right (direction Enges): this is really nice climb in the forest, 1km long and more than 10% (you need good legs). At the end of forest, turn right again into cantonal road where climb continues at 7-8%. Next climb starts at km 34 (La Combe du Sapin) till km 36. Then some up&down and long downhill to Orvin. Last part is up to Evilard and finally fast downhill back to Biel/Bienne.