Michael Greven
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michaelgreven.bsky.social
Michael Greven
@michaelgreven.bsky.social
57 followers 28 following 58 posts
Avid runner from Germany, orphaned father and finisher of #the496challenge by Sean Conway

Distances: 5k, 10k, half marathon, marathon

Author of the book (in German) "Jenseits der Filterblase"
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michaelgreven.bsky.social
Temps around freezing again - but no snow. Had my last long run before I start with my training for the half marathon in Venlo, NL. Seems like I’m well prepared!
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Wintery forest lit by the sun
February 15, 2026 at 9:16 PM
michaelgreven.bsky.social
The weather was a bit gloomy despite a forecast for sunshine when I went on my long run today. I’m back on track for training for my half marathon end of March. The training plan will commence the week after next.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Wet and dark road across a bridge under a grey sky
February 8, 2026 at 4:30 PM
michaelgreven.bsky.social
In my last post I said I wanted to focus on the upcoming half marathon - and did the opposite. Skipped the last long run. Made up for it today with one on the race distance. Work just got at me lately but that needs to stop.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Narrow uphill trail
February 1, 2026 at 8:52 PM
michaelgreven.bsky.social
Much warmer weather greeted me for my easy run this weekend. Now it’s only 10 weeks to the half marathon. Time to focus on that, I guess.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Chart showing running metrics
January 18, 2026 at 10:41 AM
michaelgreven.bsky.social
Icy patches galore during today’s long run, but also a lot of sunshine. Winter seems to have come to stay as we faced temperatures below zero and occasional snow falls as well as melting and re-freezing snow.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Snow-covered trail through the woods Frozen mud on a path under snow-covered trees
January 11, 2026 at 3:11 PM
michaelgreven.bsky.social
Winter is here and left a thin cover of snow on the ground. That’s kind of a lot of for these latitudes. It made running a bit more strenuous but also the landscape brighter and thus friendlier.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Snowy trail through the shrubs A snow man Moody image of a lake in twilight
January 4, 2026 at 2:42 PM
michaelgreven.bsky.social
A cold but sunny long run with the low-standing sun at noon casting a nice light that might trick you into thinking that it’s warmer than it is. Anyhow, the run was fun and I didn’t mind the cold at all.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Small river in golden sunlight
December 28, 2025 at 8:57 PM
michaelgreven.bsky.social
This is what the winter solstice looks like where I live. Really beautiful and calm weather (for the season), no wind whatsoever, hence glassy lakes, the sun at its highest point at noon, and me running 20k.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Lake reflecting the sky with the sun at the horizon Sunlit trail
December 21, 2025 at 5:10 PM
michaelgreven.bsky.social
Enjoyed a quiet and uneventful long run this weekend. It has been raining a lot recently so there were quite a few puddles on the trail. Could have been worse, though. Felt strong while running. VO2 max is going up.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Flock of ducks on a lake in gloomy December light.
December 15, 2025 at 5:54 AM
michaelgreven.bsky.social
Wrapping up the week with an easy 16k on some quite muddy trails, which cannot be seen on my photo because I liked the white fence :-D
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Road lined with a white wooden fence, trees without leaves in a fall scenario
November 30, 2025 at 4:18 PM
michaelgreven.bsky.social
Winter has come now with temps slightly above freezing. It’s crazy that just two weeks ago it was still warm. Did my long run at a higher pace than previously to get myself used to that again. We’ll see if I’ll succeed.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Trees at a lake with the sun glaring on the surface and between the tree trunks.
November 23, 2025 at 8:43 PM
michaelgreven.bsky.social
20k again today as I was feeling good and motivated. Probably I had to compensate for a week with a lot of negative stress at work. The running did its thing to calm my nerves, and the weather was okay as well.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Graph showing running data (20k in 2:03 hours) Flock of birds flying over a barn in a rural area
November 16, 2025 at 8:41 PM
michaelgreven.bsky.social
Last week was stressful again. I had difficulties squeezing in my runs into a busy schedule. Unfortunately, this led to me being pretty tired today. So I decided to do the same long run as last week instead of the planned 20k.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Forest in fall colours, fallen leaves on the ground.
November 9, 2025 at 5:06 PM
michaelgreven.bsky.social
Beautiful weather today. Colourful fallen leaves everywhere. It was quite a beautiful sight to behold when I did my long-ish run, catching a break on these usually rainy and dark fall days.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Farm house and stables. A road lined by trees carrying colourful leaves.
November 2, 2025 at 5:05 PM
michaelgreven.bsky.social
19k it was for me today as my long run on a very windy and rather cold day. Had to wear my winter gear for the first time. Otherwise, I got lucky with the weather because I caught a break in the rain.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Trail through the forest, covered in fallen leaves.
October 26, 2025 at 7:04 PM
michaelgreven.bsky.social
Slowly getting back to old shape. The pace for this 20k run still felt a bit much (but shouldn’t - 5:30/km is usually still an easy run pace for me). But I will get there again. Meanwhile, my cat practiced yoga.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Image of a little river with a castle in the background. Cat on a yoga mat.
October 12, 2025 at 3:12 PM
michaelgreven.bsky.social
Next step to recovery is made. I increased my mileage this week by 20% and the long run by 1k. No more problems with the muscles. But I can feel I got a little out of shape. Will work on that going forward!
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Trees growing inundated by a lake with high water Bird swimming in a lake. I don’t know what type of bird that is :-D
October 5, 2025 at 4:18 PM
michaelgreven.bsky.social
Clocked in another long run today. 17k, that’s 2k more than last Sunday. Felt good. Seems I’m getting back on track after pulling my muscles twice :-D There’s still a long way to go until I can tackle my next challenge, though.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Brook framed by trees. Image showing running stats (17km@6:04/km) Straight gravel path through a forest
September 28, 2025 at 3:51 PM
michaelgreven.bsky.social
Slowly getting back on track, although 15k as a “long” run isn’t really much for me. After 2 consecutive injuries it doesn’t hurt to take it slow (literally). My 3rd run this week - the others were shorter and just as slow.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Blurry photo of a forest
September 21, 2025 at 7:47 PM
michaelgreven.bsky.social
After some running the week before last, I let another windsurfing session follow last Sunday. On Monday I went on another run and sprained my calf. So I did not run until today when I tried 12k real slow. It worked.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Swim dock at a lake in the sun.
September 14, 2025 at 12:23 PM
michaelgreven.bsky.social
Taking the liberty of posting something not related to running ;-) Needed a running break and went windsurfing instead. Unfortunately, there wasn’t much wind. Was fun anyhow.
#windsurfing
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Man in front of windsurfing gear at a lake greeting with the hang loose gesture
August 31, 2025 at 4:56 PM
michaelgreven.bsky.social
Had a week with a lot of work (also physical), so I scaled down my long run this weekend to short 12k. But the weather was great for running and the landscape showed itself from its best side.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Black Brook (Schwarzbach) going its own way today in bright sunshine.
August 24, 2025 at 7:44 PM
michaelgreven.bsky.social
After pulling a muscle on a bike ride, I had to pause my running for a week. Got back into it this week. It seems like I’ve healed a lot, so soon I’ll be my old self, it seems. Wish me luck, please.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Winding, sunlit road through a field.
August 17, 2025 at 7:45 PM
michaelgreven.bsky.social
Had a very wet long run this weekend. The skies decided to send me a downpour to accompany me. Of course that didn’t stop me ;) Not even the huge inundation on the road on my way back home.
#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Graph showing running data: heart rate 122bpm, distance 15.04k and a pace of 6:12/km. Inundated road through the forest. A house can be seen in the background.
August 3, 2025 at 7:58 PM
michaelgreven.bsky.social
Did a shorter run than usual because yesterday I ventured out on the bike for some cross training. That was fun and it was a welcome change from the running routine.

#running
#halfmarathon
#marathon
#garmin
#runnersofbluesky
#trailrunning
Image of a bike path near a country road under a blue sky A field next to a road under a blue sky. The field has recently been harvested and seems to have had rape growing on it. A drinking fountain in a forest. Some wild summer flowers in the sunshine
July 27, 2025 at 8:01 PM