2025 Grizzly & Cub 20 Mile: Training plans, distance, date, location, and more

Find out all you need to know about the Grizzly & Cub 20 Mile – 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

On March 9, 2025, Axe Valley Runners hosts the iconic Grizzly race, taking participants through 20 miles of challenging trails with an elevation gain exceeding 914 meters. The route includes a mix of beaches, woodland paths, and steep climbs, like the infamous "Stairway to Heaven," ensuring a tough test of endurance. The event has become a staple in the trail running community, attracting athletes who enjoy the combination of natural beauty and physical challenge. With well-placed water stations and enthusiastic volunteer support, the Grizzly provides a fully immersive and memorable racing experience​.

Date: 

Sun
Mar 9
2025

Location: 

Seaton, United Kingdom

Distance

32.1km / 19.9mi

Elevation profile: 

Hilly

Website: 

Link

Elevation gain: 

914m /

Number of participants: 

Join 24 people currently training for the Grizzly & Cub 20 Mile with Runna

Join other runners just like you, currently training for the Grizzly & Cub 20 Mile with Runna

Start your plan

How to train for Grizzly & Cub 20 Mile: Grizzly & Cub 20 Mile training plans for every runner

To train for Grizzly & Cub 20 Mile, 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 20 Mile 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 20 Mile 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

Start your plan today for just $19.99 per month / $119.99 per year.

Download on the App Store.
Download Runna on the Google Play Store.
QR code for downloading the Runna app.
Get Started
Is Runna right for me?
First week free. Cancel anytime.
Scan to get started
Download on the App Store.
Download Runna on the Google Play Store.
QR code for downloading the Runna app.
First week free. Cancel anytime.

Grizzly & Cub 20 Mile FAQ: All you need to know about the Grizzly & Cub 20 Mile

What is the Grizzly & Cub 20 Mile?

Grizzly & Cub 20 Mile distance: How long is the Grizzly & Cub 20 Mile?

Where does the Grizzly & Cub 20 Mile take place?

When is Grizzly & Cub 20 Mile?

When is the next Grizzly & Cub 20 Mile?

What’s the elevation gain of the Grizzly & Cub 20 Mile?

How can I prepare for the 2025 Grizzly & Cub 20 Mile?

How do I choose the right training plan for the 2025 Grizzly & Cub 20 Mile?

How can I register for the Grizzly & Cub 20 Mile?

If you are an official race organiser with any questions about this page, please get in touch: races@runna.com

Other races you might like

Our partners

Graphic with two phones and a smartwatch featuring Runna app.

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.
Download Runna on the Google Play Store.
QR code for downloading the Runna app.
Get Started
Is Runna right for me?
First week free. Cancel anytime.
Scan to get started
Download on the App Store.
Download Runna on the Google Play Store.
QR code for downloading the Runna app.
First week free. Cancel anytime.
$19.99
$119.99
$19.99
$129.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
AUD$29.99
AUD$179.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
$19.99
$119.99
R$99.90
R$599.90
$19.99
$119.99
$19.99
$119.99
BGN 39.99
BGN 249.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
CAD$27.99
CAD$162.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$17,990
$99,990
¥128
¥798
$99,900
$599,900
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
€19.99
€119.99
Kč 499.00
Kč 2,990.00
$19.99
$119.99
kr 149.00
kr 999
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
E£599.99
E£3499.99
$19.99
$119.99
19.99
€119.99
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
$19.99
$129.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$148.00
$888.00
Ft 7,990.00
Ft 49990
$19.99
$129.99
₹1,999.00
₹9,900
Rp 299,000.00
Rp 1,999,000
$19.99
$119.99
€19.99
€119.99
₪59.90
₪399.90
€19.99
€119.99
$19.99
$119.99
¥2,500
¥15,000
$19.99
$119.99
₸9,990
₸59,990
$19.99
$129.99
₩25,000.00
₩149,000
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
RM 79.90
RM 499.90
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$399
$2,299
$19.99
$119.99
$19.99
$129.99
$19.99
$119.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
€19.99
€119.99
$29.99
$199.99
$19.99
$119.99
$19.99
$119.99
₦9,900.00
₦49,900
$19.99
$119.99
kr 229.00
kr 1490
$19.99
$119.99
Rs 4,900
Rs 29,900
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
PEN 69.90
PEN 399.90
₱999.00
₱5,990
zł 99.99
zł 599.99
€19.99
€119.99
QAR 69.99
QAR 399.99
lei 99.99
lei 599.99
₽1,490.00
₽9,990
$19.99
$119.99
SAR 79.99
SAR 499.99
$19.99
$119.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$24.98
$149.98
€19.99
€119.99
€19.99
€119.99
$19.99
$119.99
R 399.99
R 2,299.99
€19.99
€119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
kr 229.00
kr 1,329.00
CHF 18.00
CHF 100
$19.99
$119.99
$590.00
$3,990
$19.99
129.99
TZS 39,900.00
TZS 249,900
THB 699
THB 3990
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
₺399.99
₺2,499.99
$19.99
$119.99
$19.99
$119.99
AED 69.99
AED 399.99
£15.99
£99.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99
₫499,000.00
₫2,999,000
$19.99
$119.99
$19.99
$119.99
$19.99
$119.99