
Arcata, United States of America · Sunday 4 May 2025
The Avenue of the Giants Half Marathon takes place in Humboldt Redwoods State Park, California. This event presents an opportunity to experience the awe-inspiring redwood forests. The course winds along a scenic stretch of the Avenue of the Giants, a world-famous drive known for its towering trees. This race offers a unique chance to run in an environment unlike any other, surrounded by ancient giants.
Adjusted Time
1:43:34
Time difference: -1.4 minutes compared to a flat, road, temperate course.
The Avenue of the Giants Half Marathon is a half marathon held in Arcata, United States of America, scheduled for Sunday 4 May 2025. The course is run on road surface with 220m of total elevation gain, reaching a maximum altitude of 65m above sea level. For registration and full race details, visit the official The Avenue of the Giants Half Marathon website.
With 220m of elevation gain, this is a moderately undulating course. The route ranges from 34m to 65m above sea level (31m total range). While not completely flat, the elevation changes are manageable for most runners and shouldn't significantly impact pacing strategy.
Based on historical weather data for May, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 7°C to 15°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a low chance of rain (0%), so dry conditions are likely.
The Avenue of the Giants Half 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 The Avenue of the Giants Half 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 half 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 The Avenue of the Giants Half Marathon against other half marathons to find the right race for your goals.
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