I'm 43 female and have run many 10km races and half marathons. I ran 2 marathons last year (brighton and Bournemouth) with times of 4h16 and 4h11. I began training for this year's Brighton in Jan. This included running Fleet half marathon in March - around mile 8 I suddenly felt v dizzy and thought I was going to fall over. I slowed down and after about 5 mins the feeling passed. It scared me enough to go see gp who did ecg at rest - normal. The following week I did 22 mile training run and had to stop several times (maybe 5 or 6 times during 3.5 hrs). Saw cardiologist who did stress test running on treadmill all fine, said I was v fit. Next run outside only ran 3 miles and had same problem. Had to cancel running Brighton

only happens when I'm outside - I have treadmill and this week ran 40 mins steady pace and was fine. Ran outside the day before and had to stop after 1 mile feeling dizzy and sick it's getting worse and comes on more quickly. I feel if I don't stop I will collapse. Have seen an allergist last week who confirmed I am allergic to various pollens but wasn't convinced this was causing my dizziness. Please can someone help - I love running and I am so down, missing my running club and doing races... Also does anyone by some miracle know Sarah Wilson 13 - she posted here in 2009 with exactly same problem I would love to know if it was resolved and how - thank you x
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Mrs puffy has the heartrate of a fish and very low blood pressure. She will go dizzy on standing occasionally but has never got dizzy running even at the end of a long race.
MIcheB did you ever resolve this? I am a runner with vertigo issues, not yet fully diagnosed.
What are they suggesting doing next MicheB?
Mine is definitely vertigo linked. Has been going on since January but only diagnosed as vertigo in September when it got really bad. I get it more when working on computers, in supermarkets and in the dark. Running was the thing that made it better and I even managed to get around a 50 mile ultra at start of October. However last week I struggled my way around Beachy Head marathon and have been questioning if running is actually helping or not.
Do you get any similar symptoms when not running or only when you run?
I have been to an ENT clinic and am now being referred for a hearing test and to see an otologist (balance expert), although expect that will take months.
I have been referred to the hospital twice for heart investigations. The first time, I was given a heart monitor and while wearing it had a very bad turn but nothing untoward was detected. The second time I was practically laughed out of the place by the heart consultant.
But still it continues and it really spoils my runs. Most of the time, I recover after about 5-10 minutes but the dizziness can come back. Most of my friends tell me to give up running!
NO!
Can anyone help?0
I'll keep looking for an answer.
</div><div>Hi, I think I’m suffering similar symptoms to you guys. Had the problem for 3 years now. I used to be able to run 10k in 37 minutes with no issues. I then trained for London marathon which I did in 3 & half hours, but ever since then I’ve struggled to complete a 10k & sometimes 5k even! Just raced in a 4 mile race tonight. Started with first 5k at 3:40 pace, then got rising feeling, struggle to breathe but not wheezing & had to stop 4/5 times before struggling over finish. Typical of my races now. If try to run through just feel dizzy. Tend to start feeling really tired & drop off in pace just before feeling happens. Had ecg but nothing wrong with heart. Have low blood pressure - standing of around 45. Heart rate monitor shows my rate never really going over 160. Gp not really interested in helping as nothing otherwise wrong. Really getting me down. Can anyone offer anything as going to quit otherwise?</div><div>
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But only ever outside. I can run as long as I feel like on a treadmil.
Have done heart and brain scans but nothing obvious.
Have just started Chiro and have found my spine all twisted epecially my neck but unsure if it can be sorted.
Has anyone found answers. Seems so many common symptoms.
Really want to resolve soon as I love running outside..
So what I have found is
1. I try to drink at least 4L of water everyday AND I am stickler for scratching my ears with anything I can get in there (I know, not good) well anyways, since I have STOPPED this, and upped my water intake, that is when I have noticed a difference.
3 weeks ago - 10km Wolf Run on a Sunday (300m in, I had the dizziness and basically had to walk 80% of the 10km.. The Saturday before the run I drank barley any water.
Thursday just gone, 9km run NO Dizziness and Sunday just gone (yesterday) 10km done with minimal dizziness (got it after rounding a corner but it sorted itself out again).
I don't know if its the hydration or the ear thing but something has definitely changed recently (thank goodness) because I was really getting down about it...
I Have a 5km Run tomorrow & Friday and a10km trail run on Sunday so will see how I get on.
I will be giving your suggestions a go and see if that helps. Just wish I knew what triggered it in the first place.
Have had this problem with the last 2 years. I used to love to run but was getting dizzy and feeling nauseous about 20 minutes into the run.
I now have started having the same problem when I walk fast. When I get to about 4k I’m totally dizzy and nauseous. This lasts about 15/20 minutes after stopping.
This only happens when I’m outside.
I thought it might be due to the fact that I drink a lot of water....about 4/5 ltrs a day. I tried drinking less for a few days but it made no difference.
This is so frustrating...I’m now have had to stop walking on my own.
Doctor doesn’t seem to know what the problem is and I can’t pinpoint any change in my life that would have triggered this.
Hope over time it will sort itself.....fingers crossed 😀
It's really getting me down because I love(d) to run and now it's just a constant battle not to get stranded 3 miles from home or to end up on the floor with the world spinning around me. I'd try anything to make it go away, but I feel like there's nothing left I can try. I have always hoped it would eventually just go away by itself, but for 2.5yrs it's actually just been getting worse. I'm so upset about it :(
I find that when it happens (only exercising outdoors, treadmill and exercise bike is fine) when I tilt my head to the side, its almost as if I can feel my brain swishing around in my head and am really off balance.
I can't believe that this is something normal that we should all have to live with, there HAS To be a reason.
So I have no Thyroid and take Levothyroxin, I also take Calcium, Magnesium and Activated Vitamin D as I have no Parathyroid glands.
Does anyone else have the same that is suffering with this?