The parkrun problem nobody talks about
- May 29
- 6 min read
Saturday morning, just before nine. Across the country, in a few hundred parks, something faintly ridiculous and entirely brilliant is happening. Out of the mist they emerge — runners in Lycra and souvenir t-shirts, clutching coffee, gathering near a marshal in a high-vis vest and a volunteer with a clipboard who is about to do an enthusiastic safety briefing.
This is parkrun. And like most of you, I love it.
But there's a problem with parkrun that nobody really talks about, and it's this: most of the runners who turn up week after week and race it flat-out are quietly plateauing. Their first three months, they fly. Big PBs, fast progress, the joy of watching the number tumble. Then the line goes flat — and it stays flat. Sometimes for a year. Sometimes for longer.
If that's you, the good news is the fix is simple. You don't have to stop running parkrun. You just have to stop racing it every single week.
What follows are seven ways to use your Saturday 5k that will make you faster than racing it ever will.
First, pick your runner type
Before you start swapping things around, work out which camp you're in. The right way to use parkrun depends on what you're training for.
If you're in a marathon block (more than 30 miles a week, race in the next 12 weeks), parkrun is a tool, not a race. Run it at marathon pace, or fold it into a long run. Save your hard efforts for the sessions that actually build the marathon.
If you're chasing a 5k or 10k PB, parkrun can be your race-day rehearsal — but not every week. Race it hard once every three or four weeks, and use the other Saturdays for the variations below. Racing flat-out every week is the fastest route to a plateau.
If you're new to running, or coming back after a break, parkrun is community first, fitness second. Don't worry about pace. Run it easy, chat to people, let the progress come. The PBs will arrive of their own accord for the first few months without you trying.
If you've plateaued — you've been running parkrun for over a year and your time has barely shifted — the rest of this blog is for you. The honest answer is: what you've been doing has stopped working. Try something else for eight weeks and watch what happens.
Turn your parkrun into a session
Most runners arrive at the start line on Saturday, hit go, and run as hard as they can. That's a race, not a session — and a session is what will actually move you forward. Three ways to use the 5k as proper training:
Threshold parkrun. Run all five kilometres at threshold pace — roughly the effort you could hold for an hour if you really had to. This is harder than it sounds. The trap is that everyone around you is running flat-out, a crowd is buzzing, and your effort drifts upwards without you noticing. Stay disciplined. If you can't sustain it, take a 90-second walk in the middle and resume — that's still a better session than blowing up at 3k. Warm up properly beforehand and cool down for ten minutes after.
Marathon pace, half marathon pace, or 10k pace parkrun. A 5k at marathon pace should feel like a conversation. If you're targeting a 3:30 marathon, that's 4:58/km — so a parkrun in roughly 24:50, with breath to spare. The point isn't speed. The point is teaching your body what that pace feels like when there's a watch on your wrist and a crowd around you. A brilliant tune-up the week before a big race.
Alternating-kilometre fartlek. Kilometres 1, 3, and 5 at threshold effort. Kilometres 2 and 4 at 10k effort. That's a serious workout dressed up as a parkrun — far harder than running it flat-out, far more useful, and you still get your barcode scanned at the end.
The art of starting slower than everyone else
A really enjoyable way to race is to run a negative split — the second half faster than the first. Negative splits aren't just for elites; they're a discipline anyone can learn, and parkrun is the perfect place to practise. You can even rehearse a finishing kick over the last kilometre. The patience and discipline required to hold back when everyone around you is going off too fast is a skill in itself, and the only way to build it is to do it.
Make it part of the main meal
We'll cover the long run in detail in a future post, but here's the short version: there's no rule that says a parkrun has to be a standalone thing. Use it as the start of your long run, with the rest run easy off the back of it. Drop it into the middle as a motivation injection — the bit where long runs get lonely, and a sudden crowd of 400 runners is exactly what you needed. Or use it as the finish — long run first, parkrun last, faster pace on tired legs to simulate the closing miles of a marathon.
I had a runner last year who, the day before her spring marathon, insisted on doing a parkrun because she "needed to tick another one off". She ran it at conversational pace, finished, smiled, and went home to put her feet up. The Sunday went perfectly — she ran a big PB. The parkrun wasn't a problem because she'd treated it as part of the plan, not as a race. That's the trick.
Rehearse the nerves
Some people come alive on race day. Most of us spend the week before in a low hum of anxiety — sleep gets worse, nerves get louder, the inner critic gets a megaphone. We'll cover the mental side of racing in detail later in the summer, but parkrun is the cheapest, most accessible race-day rehearsal you'll ever find.
Use it to practise your pre-race routine. What you eat, when you eat it, what time you leave the house, what you wear, where you stand on the start line. Do it enough times and the nerves stop being a story about can I do this and start being a routine your body recognises. By the time the big race arrives, the unfamiliar bits have been worn smooth.
Run it slow on purpose
The hardest thing about parkrun, for most runners, is running it slowly. Everyone around you is going hard. The watch is silently judging. The instinct is to push.
Resist. There's enormous value in showing up, running a 5k at genuine recovery effort — the pace where you could comfortably narrate your week to a friend — and going home. Particularly during heavy training blocks. It keeps the social side of running alive without dropping a fresh hard effort on top of legs that needed rest.
Hand out tokens, gain perspective
The fastest way to fall back in love with parkrun is to stop running it for a few weeks and volunteer instead.
I've had runners beg me to let them run a parkrun the week after their marathon. The honest coaching answer is almost always: no — go and volunteer instead. Stand at the finish line and hand out tokens. Marshal a corner. Scan barcodes. You'll see the event from the other side — the nervous first-timer, the couch-to-5k graduate finishing their first one in tears, the 80-year-old in their 400th run. You'll remember why you started.
The bonus: a week off racing when your body genuinely needs it, in a way that doesn't feel like missing out — because you're still there, still part of it.
So what now?
Pick one. Just one. Try it this Saturday.
If you're plateaued, try the threshold parkrun. If you've got a marathon in the diary, try the marathon-pace one. If you've just raced, go and volunteer.
Then reply to this email or tag us — let us know which you went for, and how it went. We read every reply.
Your Saturday parkrun is one of the best training tools you've got. It's just not the tool you've been treating it as.
Happy running