
Flagstaff, United States of America · Saturday 3 October 2026
The Flagstaff Marathon in October 2026 offers a relatively flat to gently rolling course at high elevation, ranging between 2,438 and 2,621 meters above sea level, which means altitude will be a significant factor in your effort and pacing strategy. Road running conditions mean you can expect consistent footing and predictable terrain, though the elevation should take precedence over course difficulty in your training and race planning. At this altitude, expect slower times than sea level equivalents and plan your breathing and fueling accordingly, as the thin air will affect your aerobic capacity regardless of your fitness level. October in Flagstaff brings cooler temperatures, which can work in your favor for a full marathon effort, though you'll want to check weather conditions closer to race day. Visit the race website for details on course support, logistics, and any mandatory pace requirements before committing to this event.
Adjusted Time
3:52:35
Time difference: -7.4 minutes compared to a flat, road, temperate course.
Flagstaff Marathon is a full marathon held in Flagstaff, United States of America, scheduled for Saturday 3 October 2026. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 2621m above sea level.
This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 2438m to 2621m above sea level — a 183m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Flagstaff 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 Flagstaff 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 Flagstaff Marathon against other marathons to find the right race for your goals.
Virginia Beach, United States of America
Charlottesville, United States of America
Dearborn, United States of America
Wenatchee, United States of America
Abilene, United States of America
St. Louis, United States of America