Complex sentence: A custom-built recumbent trike called the Polar Cycle made by Inspired Cycle Engineering (ICE) helped Maria secure her record, while her rivals chose the standard upright bike and took almost 4 weeks longer than Leijerstam to reach the summit.
Split into simpler sentences: A custom-built recumbent trike called the Polar Cycle, made by Inspired Cycle Engineering (ICE), helped Leijerstam secure her record. Her rivals rode standard upright bikes and took almost 4 weeks longer than Leijerstam to reach the summit.