At 788 feet of vertical elevation, the Columbia Center in downtown Seattle stands as the second tallest building west of the Mississippi. It takes 69 floors, or 1,311 steps, to reach the highly acclaimed observation deck with breathtaking views of the entire Puget Sound region. The Leukemia & Lymphoma Society's Big Climb event raises money through individual and team fundraising, sponsorship and entry fees which is then invested in its mission to fund blood cancer research and support services for patients. In 2014, the event sold out in 13 hours and raised $2.42 million for blood cancer research and patient services. Registration for the 2015 Big Climb sold out in 9 hours and raised a record-breaking $2.92 million! Big Climb 30 sold out in a record-breaking 8 hours and raised an incredible $2.74 million. Big Climb 31 raised a record breaking $2.95 million. Big Climb Seattle will be taking place this year on Sunday, March 25, 2018.