How to Start a Marathon and 3 Pitfalls to Avoid

The starting line of a marathon is electric. The atmosphere buzzes with energy, nervous excitement, and the collective anticipation of thousands of runners waiting for the gun to go off. For many, it's the most dangerous moment of the entire race — not because of the distance ahead, but because of how easy it is to make the wrong move in those first few kilometres.

The 3 Common Traps

1. Starting Too Fast

The biggest mistake most marathoners make is letting the race vibe dictate their pace. You feel light, strong, and almost invincible. The taper has left your legs fresh, your glycogen stores are full, and adrenaline is flowing. Surrounded by others sprinting out of the blocks, it feels natural to match their stride. Start conservatively and do a pre-race warmup.

2. The Taper Effect

After weeks of reduced mileage, you're finally free to run. Your body is itching to go, and because you feel so good, it's tempting to push harder than your race plan allows. What feels like an "easy effort" at the start can be 10–15 seconds per kilometre too fast — a margin that will cost you dearly later on.

3. Following the Pack

Human instinct is to stick with the crowd. On race day, this can lead you into a pace that isn't yours. Whether you're drawn to the energy of the masses or tucking in behind faster runners for comfort, the risk is the same — you're spending energy you'll desperately need in the final third of the race.

Why Starting Too Fast is a Marathon-Killer

At the beginning of a race, your heart rate lags behind your actual effort. You may be running at what feels like a sustainable pace, but physiologically, your cardiovascular system hasn't caught up yet. Once it does — usually within the first few kilometres — your heart rate spikes, revealing that you've been running well above your target intensity. The result? You start burning through glycogen more quickly, accumulate fatigue sooner, and your muscles tighten earlier than expected.

4 Ways to Avoid the Pitfalls

1. Know Your Numbers — have a target pace or heart rate range in mind before the gun goes off.
2. Break the Race Into Phases — think of the first 5km as a controlled roll-out, not the real race.
3. Run Your Race, Not Theirs — trust your training, not the runners around you.
4. Practice Race Starts in Training — specific sessions designed to simulate the excitement and difficulty of controlling pace at the start.

Marathons aren't won in the first 5 kilometres, but they can be lost there. The key to success is to start with patience, discipline, and trust in your preparation.