Timberline Marathon

Timberline Marathon 2026 Course Analysis

Timberline Marathon is a full marathon held in Timothy Lake, United States of America, scheduled for Saturday 6 June 2026. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 0m above sea level.

Elevation Profile

This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 0m to 0m above sea level — a 0m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.

Expected Race Day Weather

Based on historical weather data for June, the expected race day conditions are as follows. Cold conditions are expected, with temperatures between 2°C and 11°C. While cold weather reduces overheating risk, runners should dress in layers and be prepared for potential wind chill. There is a high chance of rain (62%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.

Surface Type: Road

Timberline 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.

How Difficult Is Timberline Marathon?

Our difficulty rating for Timberline 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 Timberline Marathon against other marathons to find the right race for your goals.