The Lisbon half marathon is an IAAF Gold Label race and is one of the biggest half marathons in Europe with nearly 40,000 runners taking part. The scenery is fantastic and the start at the southern end of the 25 de Abril Bridge is one of the most spectacular sights in road running.
The course is exceptionally flat - so flat that the start to the elites race is slightly different so that world records can be accepted. The men's course record (58:23), set by Zersenay Tadese in 2010, is also the world record for the half marathon distance.
Runners pass over the 1.5 mile long iconic bridge before descending back to sea level at around the 3 mile mark. From here on in the route is pancake-flat as it heads east into the city centre before doubling back west along the docks and under the bridge you've just crossed.
There are several landmarks along the route including the magnificent Belem Tower which was built in the 16th century to commemorate the Portuguese explorer Vasco da Gama. The finish is also impressive in front of the magnificent Jeronimos Monastery.