Supporters are encouraged to line the streets and cheer on their friends or family alongside the athletes taking part. The route spans some of the city’s main landmarks and spectators are welcome to watch from almost anywhere along the 26.2-mile stretch. But all this choice can make it tricky to plan your day and ensure you get the best experience.

Here’s what you need to know to watch the London Marathon in person, according to the luggage storage network Stasher.

How can I track a runner?

Mobile signals can be patchy at times because of the large crowds and runners are discouraged from using devices during the race. The best option is to download the official TCS London Marathon App, which allows you to follow participants’ progress via GPS.

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You’ll be able to keep track of their progress and time your cheer perfectly.

Where are the viewing spots with the best atmosphere?

There are several points along the 26-mile route that are renowned for the energetic atmosphere, like the Cutty Sark, Tower Bridge and The Mall just before the finish line.You’ll need to arrive at these busy areas in plenty of time.

Some of the most atmospheric spots are also the busiest, with spectators arriving before the race begins. Be prepared for a long day standing but it will be worth it for the buzz of the crowd.

A benefit of positioning yourself at the Cutty Sark is that it is within walking distance of the starting lines, so you can support runners as they set off and during the race.

Where are the quietest spots to watch the marathon?

If you prefer to stay away from the crowds and don’t fancy getting up at the crack of dawn, there are plenty of quieter spots to choose from along the route, which runs from Blackheath in south-east London to Buckingham Palace. The quietest places are all in south-east London, particularly in Woolwich close to the start, the Isle of Dogs, around Mudchute and Deptford.

If you want the chance to catch your runner twice, place yourself along the 1.5-mile stretch between Tower Bridge and Limehouse.

Runners go both ways down this section – heading east towards Canary Wharf after crossing Tower Bridge at mile 13, then west for the finish after a loop around the Isle of Dogs.

Canada Water also offers the chance to see runners at mile 9 and 11, depending on pace.

How can you find runners after they’ve finished?

With thousands crossing the finish line at The Mall every hour on April 23, it can be hard to find someone – especially if the mobile networks are overwhelmed.

Moving away from the finish area is the best idea but bear in mind they’ve already run 26 miles.

Organise a time and a place to meet your friend or family member and give everyone enough time to get there as public transport will be busier than usual.

Most groups pick somewhere to eat and celebrate with their friend or family member but book a table as far ahead as you can.

What are the security or safety risks of attending as a spectator?

Before setting off on the day, you need to prepare – spectating isn’t quite as tough as marathon training but it still needs some thought.

Travel as light as you can but don’t skip the essentials. You should be prepared for a typical April day in London – sun, showers and wind.

Take food, water and a portable phone battery too. Comfortable shoes are also a must as you’ll be on your feet all day and public transport may be difficult to come by.

If you have your runner belongings to look after, you could pre-book a luggage storage location nearby for a small cost to keep your bags safe for the day.

This option is also great if you’ve had to check out of a hotel or Airbnb on race morning or are waiting to check in late afternoon after the event.

As with any large event, always keep your wits about you. Crowds are a magnet for pickpockets, so wear any bags or rucksacks front ways and keep valuables in internal zipped pockets.