
Delta, Canada · Sunday 1 November 2026
Boundary Bay Marathon is a scenic event held in Delta, British Columbia, Canada. The race takes place on a beautiful gravel oceanside trail, offering breathtaking views of the ocean and surrounding landscape. The course is flat and out-and-back, making it ideal for achieving personal bests. The event includes a full marathon, half marathon, 10K, and 5K, catering to runners of all levels.\n\nThe marathon relay is a unique feature, where teams of four runners complete the course in segments. With
Adjusted Time
3:47:18
Time difference: -12.7 minutes compared to a flat, road, temperate course.
Boundary Bay Marathon is a full marathon held in Delta, Canada, scheduled for Sunday 1 November 2026. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 9m above sea level. For registration and full race details, visit the official Boundary Bay Marathon website.
This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 2m to 9m above sea level — a 7m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Based on historical weather data for November, the expected race day conditions are as follows. Cold conditions are expected, with temperatures between 5°C and 10°C. While cold weather reduces overheating risk, runners should dress in layers and be prepared for potential wind chill. There is a moderate chance of rain (27%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.
Boundary Bay Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
Our difficulty rating for Boundary Bay Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Boundary Bay Marathon against other marathons to find the right race for your goals.
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