Guide

Your first marathon

Training for your first full marathon from Pune. When you are ready, a sixteen to eighteen week build, long runs, fuelling, heat and race day pacing.

Updated 6 Oct 2026

42K

The marathon is different. It is not a longer half marathon. Something happens after about 30K that no amount of reading prepares you for. That is part of why people keep coming back to it.

I want your first one to be a good memory, not a survival story. So here is the honest version.

Are you ready for a full?

Wait a little longer if any of these are true:

  • You have not yet run a half marathon.
  • You have been running for less than a year.
  • You are coming back from an injury that has not fully settled.
  • You cannot give the training sixteen to eighteen weeks.

There is no shame in a second or third half marathon before your first full. The runners who rush the marathon are usually the ones who never run a second one.

The shape of the training

A first marathon block is usually sixteen to eighteen weeks. The broad shape:

  • Base phase, about 6 weeks: mostly easy running, long run grows from around 14K to 22K.
  • Build phase, about 6 weeks: long run grows towards 30K to 32K, with one quality session a week.
  • Easier weeks: every third or fourth week, cut volume by about a third.
  • Taper, 2 to 3 weeks: volume drops, intensity stays a little, freshness comes back.

Most first timers do well with four or five runs a week. More is not always better.

The long run, again

You do not need to run 42K in training. Most plans peak around 30K to 32K. The taper and the race day atmosphere take care of the rest.

  • Run long runs easy. Slower than marathon pace.
  • Practise everything: breakfast, fuel, water, shoes, socks, the time you wake up.
  • In Pune, start very early. A 30K run that finishes at 10 AM in April is a different sport.
  • Do some long runs with company. The hours go by faster.

Quality, but not too much

One session a week with some faster running is enough. Good options:

  • Marathon pace segments inside a long run, for example the last 6K to 8K at goal pace.
  • Tempo runs of 20 to 30 minutes at a comfortably hard effort.
  • Intervals such as 6 x 1K, kept controlled.

Everything else is easy. The marathon is mostly an aerobic event. Easy miles build it.

Fuelling is a skill

You cannot finish a marathon well on the energy in your body alone. You need to eat during it, and your stomach needs practice.

  • Practise on every long run over 90 minutes.
  • Many runners take something every 30 to 45 minutes from early in the race.
  • Try gels, chikki, dates, bananas, whatever you can tolerate while running.
  • Drink to thirst and use electrolytes in heat and humidity.
  • In the last two or three days before the race, eat a little more carbohydrate. Nothing unfamiliar.

Most bad marathon days come from not eating enough, too late.

Heat is the hidden variable

Indian marathons are hot. Even winter races warm up quickly once the sun rises. If the day is warm:

  • Adjust your goal pace slower. A few seconds per kilometre per degree adds up.
  • Take water at every station, even a sip.
  • Pour water over your head and neck when you can.
  • Respect cutoff times, but do not race the clock into heat exhaustion.

Race day pacing

The marathon punishes a fast start harder than any other distance.

  • First 10K: slower than goal pace. It should feel almost silly.
  • 10K to 30K: steady. Eat and drink on schedule.
  • 30K to 42.2K: this is the real race. If you were patient earlier, you will be passing people here.

If things go wrong, walk the water stations. Walking a little is not failing. It is how many first timers finish.

Strength and recovery

Two strength sessions a week through the build. Sleep seven to eight hours whenever you can. Eat enough. Marathon training while chronically tired and underfed is how bones and tendons break.

After the race, take it easy for a week or two. Walk. Eat. Do not sign up for the next one that night. Okay, sign up, but do not train for it yet.

Do it with the tribe

A marathon is a solo effort on the day, but nobody trains for one alone if they can help it. Find training partners in the WhatsApp community. Do your long runs together. Share what worked for your stomach and what did not.

And when you cross that line, tell us. We want to hear about it.