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Ultra Marathon Training With Dogs

When you have a dog meant to RUN all day, sometimes you end up running a lot too. And then you might do something crazy like sign up for an ultra marathon.

Ultra marathon training with dogs

I’ve been running for years and completed a marathon and many half-marathons. I even started a business where I took dogs on running sessions and covered up to 20 miles per day with dogs at my side.

But I’m new to “ultras.” And I’m new to distance running on trails. Most of my distance running has been on pavement or sidewalks.

My husband Josh and I signed up for a January 2018 50-mile trail race. Dogs aren’t allowed for safety reasons unfortunately, but our pup Remy can still train with us.

I thought I’d write a bit about our training since we’re just getting started. If people seem interested, I’ll update this post as we progress.

April 2019 update: We’ve now done three 50-mile ultras, the San Diego Trail 50 (twice) and the PCT 50. We’re training for our first 100-miler. I’ve updated this post a bit with more now that we’ve gone on much longer runs with our dog.

For a more basic guide on how to run with your dog, see:

Training for an ultra marathon with your dog

Distance running and dogs

First things first, not all dogs are cut out for distance running, and not everyone agrees dogs should even go running at all. There were also people who believed I should not be running with my weimaraner until he was 18 months old. Heck, some people lost their goddamn minds when I took my puppy walking. See my post: How far can I walk my puppy?

So, what it comes down to is knowing yourself and knowing your dog. Consult with your dog’s vet and breeder, and then ultimately you have to make the best choice.

I personally believe running is great for most dogs and I tend to start them out running at an earlier age than most. This is because people are SLOW and when I run with my dog he is actually just trotting.

You can read more about my general opinions on what age to start running with puppies HERE.

Ultra marathon training with dogs

Ease into the long distance miles with your dog

This goes without saying, but you obviously need to gradually train your dog to handle distance running. My dog Remy has literally been training for distance running his whole life. He’s conditioned and adapted well to the many miles we put in.

Remy has been walking daily since he was 8 weeks old, and he’s been running regularly a few times per week since he was 6 months old.

This started with just 1-2 slow miles a few times per week and eventually a 5-mile “long” run on the weekend once he was a year old.

Needless to say, Remy’s paws are tough and he’s in great shape with a lot of muscle. His joints also appear to be healthy, according to his vet.

Once Remy was about 18 months old, I felt it was safe to start taking him on a weekly run longer than 5 miles. So we gradually did 6, 8 and eventually 12 miles while living in San Diego.

Running with my weimaraner Remy

Our ultra marathon training plan with our dog

Our current training plan generally consists of:

  • 1 weekly long run of 2.5 to 8 hours
  • 3-4 shorter runs per week of 2-6 miles each
  • 2-3 cross-training workouts like weights or yoga
  • 2 full days for rest or light walking

Remy tags along for all of this (nothing like yoga with a dog helping!) except for days when it’s too hot for him or if we run over 20 miles.

I did not take him on runs over 12 miles while living in San Diego. It was just too warm for him and he gives 110 percent at all times.

However, we moved to Montana in August 2018, and at that time my dog was about 2.5 years old. Since then, we’ve started taking him on longer runs of 15-20 miles every other week or so and he handles it just fine.

We also live in an area where he can be off leash almost all of the time, and I believe this is a big factor in allowing him to cover a greater distance with us. He can set his own pace, stop, speed up, etc. He can also eat snow or drink from the streams, although I always carry water for him.

Our training is more about time on our feet vs. speed. We walk the hills and we typically don’t go much faster than a 14- or 15-min mile pace on our long runs.

Obviously, we have to use common sense and for runs over 5 miles we evaluate whether or not we think Remy should go that day based on the weather.

Our dog does not have an off switch. He will go until he drops, so it’s up to us to watch out for him if it’s even slightly warm or too cold.

Like I said, I found Remy’s limit to be about 2.5 hours or 12 miles in San Diego, if it was cool enough. If it was hot out, we didn’t run with him. Now that we’re in Montana and it’s winter, I am comfortable taking Remy along up to 20 miles if he’s able to be off leash and it’s not too cold.

Trail running with dogs

In general, people can outrun dogs once we hit a certain distance. Dogs are fast, but most are not capable of the distances people can do. There are always exceptions, of course.

Can we say, Iditarod?

Like huskies, weimaraners are not your average dogs either. They are bred for endurance! See my post on the best dog breeds for running.

I don’t know how many miles the average bird dog covers in the field hunting, but my dog is bred for work! His parents are working dogs, and this pup is 100% committed to run, run, RUN!

Beach dog!

Gear we use for our dog during ultramarathon training:

  • Mighty Paw hands-free leash (pictured below)
Mighty Paw hands free leash

Looking into buying:

The joy of running with dogs

Running with a dog is relaxing for me, even if I’m running with a maniac like Remy. Time on the trail is my weekly meditation, and I’m so glad Josh can experience this too.

This is why I love dogs so much. They’re eager for adventures and the outdoors and they’re just as eager to crash on the couch afterwards. Yes, even weims eventually do crash!

Dogs are grounding for me. Inspiring, simple and peaceful.

Our weim may not be a trained hunting dog. He’s not a very obedient dog or a well-mannered dog. But he’s an adventure dog!

He leads us where we want to be.

How about the rest of you. Do you run with your dog?

Do you have any questions about running with dogs?

Let us know in the comments!

-Lindsay, Josh, Ace & of course Remy!

Follow along on Instagram HERE.

*This post contains affiliate links.

See related posts:

Training sled dogs for the Yukon Quest 1,000 mile race

Off-leash hiking with your dog

Mighty Paw hands-free running leash

More on ultra trail running with dogs

P.S. Just want to give a little shoutout to the world’s best dog, Ace! He may be retired, but I do not forget the thousands of miles we covered together. He’s very much enjoying his retirement. Good boy, Ace! May 2018 Update: Ace has passed away. Thank you for everything, Ace!

Ace the black Lab mix


Thursday 17th of November 2022

Hi! My name is Dave and I live in San Diego also. We live up in the mountains and I run/walk daily with my German shorthair. Gunther has gone on runs up to about 12 miles. I’m looking into adding much longer runs with him and curious about what and how often he should eat. On this 12 mile runs neither one of us ate anything. Felt fine. Just water at every mile. Would love to hear your take on feeding and running. Thanks!


Saturday 29th of January 2022

I just discovered your blog this morning (looking for info on running dogs in the cold because it's 11 degrees right now) and started reading a whole bunch of your older posts. I have a Weimeraner who's almost two and I love her so much. She's my best running buddy. And she'll wear a jacket for our run today :-) Not sure if we'll go longer than 30-40 minutes but if she's doing ok, we might! Her longest run has been about 12 miles just a few months ago, and she did great. I look forward to finding you on insta and reading more of your posts. Thank you for sharing your knowledge and experience!

Lindsay Stordahl

Saturday 29th of January 2022

Oh I'm sure your weim is the best running buddy! Have a good run today!


Tuesday 20th of November 2018

Some dogs are runners while others are not. I have a 10 lb terrier cross who can easily do 10K and then in the afternoon be ready for another. (I'm not) She is now 12 years old and we still do 6-10k in the summer but not in the winter because it is too cold for her arthritic joints. She also has a major heart murmur but if she wants to go we go. When she doesn't we don't force her. Our other pup is now 18 months and he is always ready to run so we take him winter or summer.

Lindsay Stordahl

Tuesday 20th of November 2018

I love when smaller dogs are out running too. So many of them are great running buddies.


Saturday 8th of September 2018

EVERYTHING is about training. I run regularly with my dog (zwergschnauzer) different distances. From 10km up to 100km. When we are on run, SHE knows that we are working. No sniffing and chasing! On hot days we run slower and cool her in every lake or stream. On cold days I just give water when I drink. We are together about 6 years - SHE was never injured! Everything is about training (sport and mental). Hunting dogs on regular "wild boar"hunting day are running all days. The "shepherd dog" are working everyday in hot and cold conditions without almost any rest. I think that every owner could see how much his dog could do. Of course the "fat and heavy" breeds are just not for sport. But "athletic" and hunting breeds are perfect for run ( of course not running behind bike).

Good luck to everyone


Friday 16th of June 2017

There has never any shortage of opinions about running. I am 64 and a life long runner. Some still advise me not to. I run marathons, half-marathons, and many, many 10ks and 5ks and have had only minor injuries almost all related to tripping. I love running! We welcomed our last dog into our family with the idea of having a running buddy and for about the first year, she was the very best!!! But then she became a maniac! She clothes lined me 4-5 times and the last time we ran together, she broke away so hard that the leash tangled with my finger resulting in a broken bone. On trail runs she would start out right by me then leave to chase rabbits and refuse to come back. I tried all the techniques from your blog and every other reasonable bit of advice without success. Now my daily routine is to run then come home and walk this crazy dog on high alert for rabbits, squirrels, etc. We love each other dearly and she has many other fine qualities, but caring about my well being is definitely not one of them. I think it is great that you have a dog that runs with you. It is always nice to have a companion - especially on trails. Several people who I run with occasionally bring their dogs and I am very glad, especially in remote areas (I am the slowest) since they come back to check on me. Enjoy the training and what sounds like a huge accomplishment. I will let you know when running starts to ruin my health.

Lindsay Stordahl

Friday 16th of June 2017

I'm so sorry to hear your dog has caused you some injuries. That must be frustrating.

Speaking only for myself, running has made me healthier and stronger. I had knee problems 10 years ago before I became a serious runner. I would run occasionally and my knees or ankles would always hurt. In my case, the more I ran, the stronger my muscles became and the fewer injuries and problems I have had.

I'll also let you know when running starts to ruin my health.