Marathon Handbook has launched a pace calculator for the Toronto Waterfront Half Marathon. It offers a kilometer-by-kilometer race plan based on 2025 results. The calculator adjusts splits for temperature, dew point, and wind direction.

The course features a climb, a descent, and a turnaround near the Humber River. The final stretch up Bay Street is particularly challenging. The tool helps runners manage their pace through these varying conditions. GPS accuracy can be an issue downtown, advising manual lap timing. Read more culture coverage.

The calculator uses data from nearly 19,000 finishers. It provides adjusted paces and splits for each kilometer. Runners can input their goal finish time and start corral. The tool also allows for custom weather conditions. Related: TCS Toronto Waterfront Marathon Supports Diverse Causes.

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