Celebrating the stunning wilderness of southcentral Alaska, the Kenai River Marathon offers runners a unique and peaceful experience on September 28, 2025. Participants can choose between a full marathon, half marathon, 5K, or relay team event, each beginning in downtown Kenai and weaving through forested roads, coastal stretches, and riverside paths. The course is known for its gentle elevation changes, clean air, and supportive volunteer crews. With post-race refreshments, awards, and local hospitality, the event combines a welcoming small-town vibe with high-quality race organization. It’s a perfect choice for runners seeking a late-season marathon in a uniquely Alaskan setting.
Races
Marathon
Marathon
Half Marathon
5 km
Hosted by the Kenai Chamber of Commerce and City of Kenai volunteers, the full marathon starts at 09:00 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center (11471 Kenai Spur Hwy) and follows a scenic out‑and‑back course along Kenai River roads.
Teams of four runners can split the full 42.195 km marathon distance in stages, starting together at 09:00 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center along the river route.
Also beginning at 09:00 AKDT on Sunday, September 28, 2025, this half marathon uses the same start/finish point and course terrain as the full marathon, offering a coastal Alaska running experience.
A timed 5 km fun run/walk starts at 09:30 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center and runs a separate out‑and‑back route through Old Town Kenai and Kenai Municipal Park.
Weather based on historical averages.
FAQs
What is the Kenai River Marathon?
How long is the Kenai River Marathon?
Where does the Kenai River Marathon take place?
What is the elevation gain of the Kenai River Marathon?
How can I prepare for the Kenai River Marathon?
How do I choose the right training plan for the Kenai River Marathon?
Hosted by the Kenai Chamber of Commerce and City of Kenai volunteers, the full marathon starts at 09:00 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center (11471 Kenai Spur Hwy) and follows a scenic out‑and‑back course along Kenai River roads.
The Kenai River Marathon is 42km long.
The Kenai River Marathon takes place in Kenai, AK, USA.
The Kenai River Marathon elevation gain is 142 meters, which Runna classifies as a Flat race.
The best way to train for the next race is to use a personalized 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 personalized 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 Kenai River Marathon?
Hosted by the Kenai Chamber of Commerce and City of Kenai volunteers, the full marathon starts at 09:00 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center (11471 Kenai Spur Hwy) and follows a scenic out‑and‑back course along Kenai River roads.
How long is the Kenai River Marathon?
The Kenai River Marathon is 42km long.
Where does the Kenai River Marathon take place?
The Kenai River Marathon takes place in Kenai, AK, USA.
What is the elevation gain of the Kenai River Marathon?
The Kenai River Marathon elevation gain is 142 meters, which Runna classifies as a Flat race.
How can I prepare for the Kenai River Marathon?
The best way to train for the next race is to use a personalized 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 Kenai River Marathon?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized 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 Kenai River Marathon Relay?
How long is the Kenai River Marathon Relay?
Where does the Kenai River Marathon Relay take place?
What is the elevation gain of the Kenai River Marathon Relay?
How can I prepare for the Kenai River Marathon Relay?
How do I choose the right training plan for the Kenai River Marathon Relay?
Teams of four runners can split the full 42.195 km marathon distance in stages, starting together at 09:00 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center along the river route.
The Kenai River Marathon Relay is 42km long.
The Kenai River Marathon Relay takes place in Kenai, AK, USA.
Runna classifies the Kenai River Marathon Relay elevation profile as Flat.
The best way to train for the next race is to use a personalized 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 personalized 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 Kenai River Marathon Relay?
Teams of four runners can split the full 42.195 km marathon distance in stages, starting together at 09:00 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center along the river route.
How long is the Kenai River Marathon Relay?
The Kenai River Marathon Relay is 42km long.
Where does the Kenai River Marathon Relay take place?
The Kenai River Marathon Relay takes place in Kenai, AK, USA.
What is the elevation gain of the Kenai River Marathon Relay?
Runna classifies the Kenai River Marathon Relay elevation profile as Flat.
How can I prepare for the Kenai River Marathon Relay?
The best way to train for the next race is to use a personalized 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 Kenai River Marathon Relay?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized 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 Kenai River Half Marathon?
How long is the Kenai River Half Marathon?
Where does the Kenai River Half Marathon take place?
What is the elevation gain of the Kenai River Half Marathon?
How can I prepare for the Kenai River Half Marathon?
How do I choose the right training plan for the Kenai River Half Marathon?
Also beginning at 09:00 AKDT on Sunday, September 28, 2025, this half marathon uses the same start/finish point and course terrain as the full marathon, offering a coastal Alaska running experience.
The Kenai River Half Marathon is 21km long.
The Kenai River Half Marathon takes place in Kenai, AK, USA.
Runna classifies the Kenai River Half Marathon elevation profile as Flat.
The best way to train for the next race is to use a personalized 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 personalized 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 Kenai River Half Marathon?
Also beginning at 09:00 AKDT on Sunday, September 28, 2025, this half marathon uses the same start/finish point and course terrain as the full marathon, offering a coastal Alaska running experience.
How long is the Kenai River Half Marathon?
The Kenai River Half Marathon is 21km long.
Where does the Kenai River Half Marathon take place?
The Kenai River Half Marathon takes place in Kenai, AK, USA.
What is the elevation gain of the Kenai River Half Marathon?
Runna classifies the Kenai River Half Marathon elevation profile as Flat.
How can I prepare for the Kenai River Half Marathon?
The best way to train for the next race is to use a personalized 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 Kenai River Half Marathon?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized 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 Kenai River 5K?
How long is the Kenai River 5K?
Where does the Kenai River 5K take place?
What is the elevation gain of the Kenai River 5K?
How can I prepare for the Kenai River 5K?
How do I choose the right training plan for the Kenai River 5K?
A timed 5 km fun run/walk starts at 09:30 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center and runs a separate out‑and‑back route through Old Town Kenai and Kenai Municipal Park.
The Kenai River 5K is 5km long.
The Kenai River 5K takes place in Kenai, AK, USA.
Runna classifies the Kenai River 5K elevation profile as Flat.
The best way to train for the next race is to use a personalized 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 personalized 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 Kenai River 5K?
A timed 5 km fun run/walk starts at 09:30 AKDT on Sunday, September 28, 2025, from the Kenai Visitor Center and runs a separate out‑and‑back route through Old Town Kenai and Kenai Municipal Park.
How long is the Kenai River 5K?
The Kenai River 5K is 5km long.
Where does the Kenai River 5K take place?
The Kenai River 5K takes place in Kenai, AK, USA.
What is the elevation gain of the Kenai River 5K?
Runna classifies the Kenai River 5K elevation profile as Flat.
How can I prepare for the Kenai River 5K?
The best way to train for the next race is to use a personalized 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 Kenai River 5K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized 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!
More
Sport:
Running
Tags:
Nature
Relay
Fun Run
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Kenai River Marathon 2025 or Kenai Chamber of Commerce. 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 Kenai River Marathon 2025 website.
