PiThrow is an annual engineering charity event held annually around the 14th day of March (3.14) and has raised close to fifty thousand dollars for various charities since 1993.

For three days, anyone in Saskatoon Saskatchewan has the option to donate $10 for a whipped cream topped lemon pie that gets sent to a person of their choice. When the pie is delivered, it can be redirected for $10, bought outright for $20 to stop the pie from circulating, or delivered to the recipient's face. Students are encouraged to participate if they so choose, but are not required to do so.

This year, Pi Throw has been planned for March 13-15, 2019. The charity being supported this year is the Jim Pattison Children's Hospital Foundation.


Please complete this form in order to place your order. If you are paying with PayPal, you must use the link at the bottom of this section to process your payment. You may complete additional forms if you wish to purchase additional pies.


Please be advised that the service or website seeking payment is neither endorsed, nor managed by the University of Saskatchewan. As such, the University of Saskatchewan does not provide any guarantees, warranties, covenants, or representations, whatsoever, with respect to the payment service or with respect to the reason for which you are providing payment. Any concerns with respect to payment or the reason for which you are providing payment are best addressed to the payment service and/or the organization responsible for the purpose for which you are providing payment.

Tax Receipt

If you are looking for a tax receipt as proof of your total donation to PiThrow, see this form.

Do Not Pie

If you do not want to be interrupted during this PiThrow season, please fill out this form to rule out any possibilities.