There are a variety of conferences, meetings and seminars organized in Canada and in the USA. These can be enriching opportunities to meet peers, share your research, and see what kind of work is being done!
Here are a few events currently open to undergraduates:
CUMC: the Canadian Undergraduate Mathematics Conference is the largest of its kind. An amazing opportunity to meet your peers from across the country!
Bridges Conference is a conference on mathematics and art. This year University of Waterloo is hosting it in July.
YMC: Young Mathematicians Conference held in August at the University of Ohio