2025 Fox Valley Half Marathon: Training plans, distance, date, location, and more

Find out all you need to know about the Fox Valley Half Marathon – including how to choose the best training plan to get race-ready and set a new personal best.

Arial view of the race city.

About the event

Held on September 21, 2025, the Fox Valley Half Marathon takes runners on a scenic route through St. Charles, Illinois, with a manageable elevation gain of 105 meters. Organized by Fox Valley Marathon Races, this event offers a beautiful and well-supported race experience along the Fox River. The half marathon distance is accessible for runners of all levels, and the rolling course provides just enough challenge to keep things exciting. With its friendly atmosphere and stunning views, this half marathon is a great way to enjoy the Fox Valley race weekend.

Date: 

Sun
Sep 21
2025

Location: 

St Charles, United States

Distance

21.1km / 13.1mi

Elevation profile: 

Flat

Website: 

Link

Elevation gain: 

105m /

Number of participants: 

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Start your plan

How to train for Fox Valley Half Marathon: Fox Valley Half Marathon training plans for every runner

To train for Fox Valley Half Marathon, you’ll need a personalized training plan and to build up your weekly mileage progressively.

Runna offers running training plans for every runner and goal out there.

With Runna, your running coaching app, you get a personalized Half Marathon training plan that:

  • Structures your week and sets out all sessions for you
  • Automatically adjusts your mileage and types of runs to help you perform at your best
  • Incorporates deloads and strength training
  • Helps you manage your recovery and nutrition

Having a plan will also help with accountability, meaning that you can focus purely on improving your running game.

Check out our personalized Half Marathon training plans to find the one that best suits your goals.

Stories from Runnas

01/05
My first marathon and second ever running race. Sub 3 hour was my goal, but thanks to Runna managed to run a 02:41:49!
Dan C
San Sebastián Marathon
User @danrconnell finishing a race with a medal.
02/05
I’m 45 and only started running 12 weeks ago when I downloaded the Runna app.
Just finished my first half marathon - my goal was just to finish it before the 3hr cutoff but I made it in 2 hours 30 mins.
Somaclay
Sunshine Coast Half Marathon
User @somaclay finishing a race with a medal.
03/05
Completed my first ever marathon. I had never run more than 5km before the start of this year.
Through training with Runna since January, I’m so proud to say I’ve completed a marathon in 3hr37min
Sathi
Richmond Run-fest Marathon
User @sathi6 finishing a race with a medal.
04/05
From struggling to run 5km to running our first half marathon within 6 months of training using Runna! Loved every second of it.
Sara C
Belfast Half Marathon
User @saramcclements finishing a race with a medal.
05/05
Trained with Runna for 16 weeks to complete my first 250km ultramarathon in Tanzania in 37 hours
Henry G
Ultra X Tanzania 250
User @henry_galligan finishing a race with a medal.

Take your running to the next level

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Fox Valley Half Marathon FAQ: All you need to know about the Fox Valley Half Marathon

What is the Fox Valley Half Marathon?

Fox Valley Half Marathon distance: How long is the Fox Valley Half Marathon?

Where does the Fox Valley Half Marathon take place?

When is Fox Valley Half Marathon?

When is the next Fox Valley Half Marathon?

What’s the elevation gain of the Fox Valley Half Marathon?

How can I prepare for the 2025 Fox Valley Half Marathon?

How do I choose the right training plan for the 2025 Fox Valley Half Marathon?

How can I register for the Fox Valley Half Marathon?

If you are an official race organiser with any questions about this page, please get in touch: [email protected]

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Take your running to the next level

Your personalized running coach with tailored training plans to achieve your goals, from running a faster 5k to finishing your first marathon.

Download on the App Store.
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Get Started
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First week free. Cancel anytime.
Scan to get started
Download on the App Store.
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First week free. Cancel anytime.
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