Complex sentence: After a string of World Cup victories and podium placings through the early 1990s his strength was climbing and in this era he was the best in the world, becoming the Official World Mountain Bike Hill Climb Champion in 1990 at Durango.
Split into simpler sentences: After a string of World Cup victories and podium placings through the early 1990s. His strength was climbing & at this era he was the best in the World becoming the Official World Mountain Bike Hill Climb Champion in 1990 at Durango.