On September 7, 2025, the Glen Iris 5K & 10K Trail Run will send participants through the natural beauty of Letchworth State Park, starting and ending near the Trout Pond. Both distances begin at 9:00 AM, offering challenging woodland trails, lush creek crossings, and panoramic views of the Genesee River Gorge. Organized by iRunWNY, the event supports the Castile Volunteer Fire Department, with a portion of proceeds benefiting the local community. All finishers receive custom finisher medals and race shirts (available for selection by August 29), while packet pickup takes place at the nearby Trailside Lodge.
Races
The 10K Trail Run also starts at 9:00 AM on 7 September 2025, at the same location and organized by the Glen Iris Trail Committee—offering a longer route through the same stunning park landscape.
The 5K Trail Run begins at 9:00 AM on 7 September 2025 at Trout Pond in Letchworth State Park, Castile, NY, organized by the Glen Iris Trail Committee, and features woodlands, waterfalls, creeks, and the spectacular Genesee River Gorge.
Weather based on historical averages.
FAQs
What is the Glen Iris 10K?
How long is the Glen Iris 10K?
Where does the Glen Iris 10K take place?
What is the elevation gain of the Glen Iris 10K?
How can I prepare for the Glen Iris 10K?
How do I choose the right training plan for the Glen Iris 10K?
The 10K Trail Run also starts at 9:00 AM on 7 September 2025, at the same location and organized by the Glen Iris Trail Committee—offering a longer route through the same stunning park landscape.
The Glen Iris 10K is 10km long.
The Glen Iris 10K takes place in Castile, NY, USA.
The Glen Iris 10K elevation gain is 195 metres, which Runna classifies as a Moderate race.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Glen Iris 10K?
The 10K Trail Run also starts at 9:00 AM on 7 September 2025, at the same location and organized by the Glen Iris Trail Committee—offering a longer route through the same stunning park landscape.
How long is the Glen Iris 10K?
The Glen Iris 10K is 10km long.
Where does the Glen Iris 10K take place?
The Glen Iris 10K takes place in Castile, NY, USA.
What is the elevation gain of the Glen Iris 10K?
The Glen Iris 10K elevation gain is 195 metres, which Runna classifies as a Moderate race.
How can I prepare for the Glen Iris 10K?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Glen Iris 10K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Glen Iris 5K?
How long is the Glen Iris 5K?
Where does the Glen Iris 5K take place?
What is the elevation gain of the Glen Iris 5K?
How can I prepare for the Glen Iris 5K?
How do I choose the right training plan for the Glen Iris 5K?
The 5K Trail Run begins at 9:00 AM on 7 September 2025 at Trout Pond in Letchworth State Park, Castile, NY, organized by the Glen Iris Trail Committee, and features woodlands, waterfalls, creeks, and the spectacular Genesee River Gorge.
The Glen Iris 5K is 5km long.
The Glen Iris 5K takes place in Castile, NY, USA.
The Glen Iris 5K elevation gain is 121 metres, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Glen Iris 5K?
The 5K Trail Run begins at 9:00 AM on 7 September 2025 at Trout Pond in Letchworth State Park, Castile, NY, organized by the Glen Iris Trail Committee, and features woodlands, waterfalls, creeks, and the spectacular Genesee River Gorge.
How long is the Glen Iris 5K?
The Glen Iris 5K is 5km long.
Where does the Glen Iris 5K take place?
The Glen Iris 5K takes place in Castile, NY, USA.
What is the elevation gain of the Glen Iris 5K?
The Glen Iris 5K elevation gain is 121 metres, which Runna classifies as a Hilly race.
How can I prepare for the Glen Iris 5K?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Glen Iris 5K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
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Sport:
Running
Tags:
Nature
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Glen Iris 5K & 10K Trail Run 2025 or Innovative Timing Systems, LLC. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Glen Iris 5K & 10K Trail Run 2025 website.
