Bad Zwischenahn Bear Triathlon: Course, Route Profile & Map

Course & Elevation

The day starts at 9 am in the Zwischenahner Meer, Lower Saxony's second-largest inland lake, right in front of the spa park of Bad Zwischenahn. Out of the water it is a short way into the lakeside transition area, which stays the hub of the whole race.

The bike leg is a 500 metre approach, three laps of a 13.0 kilometre circuit and a 500 metre return. The profile moves between 8 and 14 metres above sea level, just under 73 per cent of the course is level, and the course analysis finds no climb at all; 3.8 metres of climbing per kilometre is measurement noise, not terrain. The roads stay open to traffic, and in this open marsh landscape that means one thing above all: resistance comes from the air rather than the gradient, and it changes direction several times per lap.

The run starts at the spa park: 161 metres to the turnaround on Unter den Eichen, then four laps of 2.6 kilometres through the park and along the lake promenade, and finally 191 metres to the line. The turnarounds fall at kilometre 2.7, 5.2, 7.9 and 10.5, and you pass the aid station on the north shore at 1.2, 3.9, 6.5 and 9.1 kilometres; in very hot conditions the organiser adds a second station near the start. All of it is staged for the 33rd time by the 1. Triathlon Club Oldenburg, the Bears, on a weekend that opens on Saturday with the youth Swim&Run classes and the Regionalliga Nord rounds.

Pacing Strategy

On a course without elevation there are no natural recovery windows, so the pacing has to come from within. Swim the 1,500 metres evenly and skip the starting sprint, because there is no descent on the bike that will let you bring your heart rate back down.

The race is decided on the second of the three bike laps. The first rides itself, the third is a question of will, but the second is where you find out whether your output stays flat. Set a target power or a target breathing rate for the headwind section and hold it, rather than trying to rescue your lap average on the tailwind half; on a 13 kilometre circuit in the open Ammerland you ride every wind direction three times.

The main trap waits on the run, and it has to do with the four turnarounds. Every one forces a deceleration and a rebuild; snapping straight back to target pace after each of them is paid for across eight such moments. Run the first of the four laps deliberately a shade slower than planned, use the north-shore aid station on every lap, and with a 9 am start in late August expect the closing part of the run to land in the warmest stretch of the morning.

Training plan for Bad Zwischenahn Bear Triathlon: 12-week build

The Olympic distance at the Zwischenahner Meer takes an age-group athlete roughly two and a quarter to three hours. The demand is about as even as a triathlon gets: one long aerobic effort just under threshold, with no climbs to push you briefly above it and no descents on which to claw anything back.

That is precisely where the difficulty lies. Train mostly intervals and you arrive with no feel for what 65 to 80 minutes of constant race-pace work in the aero position costs, and across three identical laps without any change of terrain, every fluctuation shows.

What decides the race is the wind on the bike and the eight braking and re-acceleration moments at the four run turnarounds. Neither is trained with hill repeats, but with long threshold blocks of 15 to 25 minutes in race position plus re-accelerations from low speed, and with runs that build in a 180-degree turn every 1.3 kilometres.

Add open-water work in a lake, where sighting has no landmarks to offer, and heat adaptation: the race sits at the end of August, the run follows an exposed lake promenade, and the organiser explicitly keeps an extra aid station ready for hot days. Drinking across four run laps is something to rehearse rather than improvise.