The Erkner Half Marathon: Flat, Urban, Ruthless on Pacing

After 90 km of flat biking, Erkner hands you an equally flat half marathon, laid out through the town centre with passes near the market square and the Gerhart-Hauptmann museum. On paper it's a PB course. In practice it's a pacing exam: with no hills there are no excuses, and every second lost is on you.

The Circuit: 3 or 4 Laps, To Be Confirmed

The sources consulted don't agree on the number of laps: some descriptions say 3, others 4. It's not a minor detail: it changes the length of each lap, how often you pass the aid stations and the mental management of the run leg. As soon as the official map is available, check it and build your plan on confirmed data. When in doubt, prepare a lap-counting strategy: a manual lap on your watch at each pass of a fixed point, or the classic wristband check if the organisers use them.

The lap format has a real advantage: more passes through the centre and plenty of spectator spots. Your supporters see you 3-4 times without moving.

Flat Doesn't Mean Easy

On a flat course you use the same muscles, with the same movement, for 21.1 km. Athletes who only train on rolling terrain suffer localised fatigue in the calves and hip flexors in the second half. The countermeasure is simple: do your long runs and bricks on flat ground, at race pace, in the final 6-8 weeks.

Pacing: The Numbers

The classic trap is the first kilometre out of T2: legs spinning, adrenaline, crowds. Start controlled. Suggested plan: first 5 km at 5-10 seconds per kilometre slower than target, km 5-16 at goal pace, final 5 km pushing if the legs respond.

Average paces for typical goals on this course:

• Happy finisher (run 2:10): around 6:10/km
• Sub 5:30 (run 1:50): around 5:13/km
• Sub 5:00 (run 1:40): around 4:44/km
• Sub 4:30 (run 1:30): around 4:16/km

These paces only work if your bike leg was disciplined: if you pushed above your level over the 90 km, the flat terrain won't save you here.

Aid Stations and Weather

Aid station details aren't available in the sources consulted: assume the standard setup for races in this series, but don't rely on products you've never tried. Carry what you actually need.

In mid-September air temperatures typically range between 10 and 20 °C: near-ideal running conditions. If it's a cool day, the risk isn't the heat but overdressing at the start: in most cases your race suit is enough from the first kilometre.

What To Do Now

Four actions. One: schedule weekly bricks with a race-pace bike followed by 20-40 minutes of running at goal pace, on flat ground. Two: test your target pace in a long run with race-pace blocks, to see if it's realistic after 90 km in the aero position. Three: decide how you'll count laps before knowing whether it's 3 or 4, so the plan adapts in a minute. Four: give your family a fixed spot near the market square and agree on what they should tell you at each pass: the gap to your target pace, not generic encouragement.