Michelle Leduc, a seasoned ultrarunner, set a new women's fastest known time on Ontario's Rideau Trail. She completed the trail in 4:08:54:27, surpassing previous records.

Leduc, a former Canadian 100-mile record holder, carried all her supplies unsupported from Ottawa to Kingston. Despite minimal sleep, she managed the challenging terrain and conditions. Read more trail coverage.

This achievement follows her victory at the Last Annual Vol State Road Race, where she finished second overall. Leduc's dedication and experience shine through in these impressive feats. Related: Cornwall ultrarunner sets new Vermont Long Trail speed record.

This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.