Once again in 2020, Bloomsday will time finishers using B-tag timing by Chronotrack. When you check in on Bloomsday weekend, you'll find a plastic strip on the back of your race number. This is a B-tag and needs to stay on the back of the number. Please don't remove it!
The B-tag uses radio frequency identification to track each participant individually and allows every runner, jogger and walker to be timed precisely from the moment they cross the starting line to the moment they cross the finish.
The B-tags are part of the reason Bloomsday was recognized by Northwest Runner magazine as having the best Finish Line Experience in the Northwest. Of course the dramatic finish above the Spokane Falls helps too!