Historically, the Thornapple River is in the mid-70’s and has been wetsuit legal.
- 2024 Race Day Water Temp – 69 degrees
- 2023 Race Day Water Temp – 72 degrees
- 2022 Race Day Water Temp – 68 degrees
- 2021 Race Day Water Temp – 76 degrees
- 2019 Race Day Water Temp – 72 degrees
- 2018 Race Day Water Temp – 69 degrees
- 2017 Race Day Water Temp – 71 degrees
- 2016 Race Day Water Temp – 73 degrees
For more information about the Grand Rapids Triathlon please contact us here.
