My marathons

ATOS Halbmarathon Heidelberg

The organiser has not published a date. Heidelberg
Old Bridge
© OpenStreetMap Old Bridge. Photograph by Flocci Nivis, CC BY 4.0 via Wikimedia Commons . Course line © OpenStreetMap contributors

The course

Pick a place, or drag along the profile

Flat to km 6, a steep climb of 158 m to km 10, then downhill home.

Start, finish

© OpenStreetMap contributors

  1. Photo: No machine-readable author provided. Hlohning assumed (based on copyright claims)., CC BY 2.5

km 19.1mile 11.9

Heidelberg Castle

Height drawn many times taller than life. Heights: GEDTM30.

Course elevation profile, 8× vertical exaggeration Elevation along the course from km 0 to km 21. The trace runs between 110 and 276 metres, a range of 165 metres, drawn at 8 times vertical exaggeration so the shape is legible. Smoothed over 1 km before this profile was derived. An unsmoothed urban surface carries the buildings and would assert a climb that is not there. The dashed stretches are bridge decks: Alte Brücke, km 2.3 to 2.5; (unnamed span), km 14.8 to 15. A bare-earth model reads the ground or the water beneath a bridge, not the deck the runner is on, so those runs are interpolated between the ground either side rather than measured, and they under-report the real climb across a span.
0 5 10 15 20 km
0 5 10 13.1 mi

Dashed: bridge

  • flat to 6
  • steep climb to 10
  • downhill home

Your 2 gels, at the orange marksFor a 1:55 finish, one every 40 minutes

  1. km 7.3mile 4.6
  2. km 14.7mile 9.1

Get them on AmazonAmazon partner link

The course in short 2 lines
  • Two climbs, the big one before 10 kmHigh point 275.6 m at 10.2 km; 275.9 m of climbing in all.
  • From the Alte Brücke into the PhilosophenwegFriedrich-Ebert-Anlage to the Uniplatz via Alte Brücke and Philosophenweg.
Course notes 2 short reads on the course
Whole courseGradientTwo climbs, the big one before 10 kmHigh point 275.6 m at 10.2 km; 275.9 m of climbing in all.

The first 6.5 km stay between 110 and 121 m beside the Neckar. The road then climbs 158 m in 3.7 km. A second, shorter rise takes the road from 124.6 m at 16 km to about 219 m at 18.5 km before the final descent to the finish at 121 m. Climbing totals 275.9 m.

Measured

Whole courseGeometryFrom the Alte Brücke into the PhilosophenwegFriedrich-Ebert-Anlage to the Uniplatz via Alte Brücke and Philosophenweg.

The route runs Friedrich-Ebert-Anlage, Sofienstraße, Hauptstraße, Fischmarkt, Steingasse and the Alte Brücke, then Neuenheimer Landstraße and Uferstraße on the north bank. It takes the Philosophenweg, Haarlassweg and Stiftweg out toward Kleingemünd. The 2026 start was on the Friedrich-Ebert-Anlage at the university library, with the finish party on the Uniplatz.

Sourced

Race fuel

Energy gel
An energy gel sachet
Illustration · drag to turn

2 gels for Heidelberg, plus 1 spare

Finish

One every 40 minutes, the orange marks on the profile, by the clock:

  1. km 7.3mile 4.6
  2. km 14.7mile 9.1

Our pick: SiS BETA Fuel gel, box of 6, strawberry and lime. 40 g of carbohydrate a gel, about twice a usual gel, from two kinds of sugar your body takes up side by side.

Easy to forget on race morning: pack them with your bib the night before.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.

In Canada the button opens GU Energy Gel, Salted Caramel, 24-pack, the best seller there.

Outside the Netherlands, Belgium, Germany, Austria and Switzerland, the UK and Ireland, Spain and Portugal, Italy, the rest of the EU and Canada the button opens GU Energy Gel, Chocolate Outrage, 24-pack on Amazon.com, the best seller there.

Anti-chafe
Compeed Anti-blister stick
Photo: Compeed

Compeed

Compeed anti-blister stick, 8 ml

Best selling on Amazon amazon.nl, read 2 Nov

An invisible layer before the start keeps seams, straps and shoes from rubbing skin raw.

Put it on before you leave for the start: heels and toes, inner thighs, under a bra or heart-rate strap.

Try it on a long run first, like everything you use on race day.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.

Number belt
A race number belt
Illustration · drag to turn

Compressport Race Belt

Holds your bib without safety pins through your top, with loops for up to 8 gels.

Clip the bib on the night before, so it goes on with your shorts in the morning.

Keep the number on the front, where officials and photographers can see it.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.

Electrolytes
A tube of electrolyte tablets
Illustration · drag to turn

SiS Hydro electrolyte tablets, tube of 20

One tablet in a bottle puts back some of the salt you sweat out.

One tablet in 500 ml of water in the hour before the start.

Only if you have used them in training: nothing new on race day.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.

Blister plasters
Compeed Blister plasters, medium, 6
Photo: Compeed

Compeed

Compeed blister plasters, medium, 6

Best selling on Amazon amazon.nl, read 2 Nov

One in a pocket cushions a blister if one starts.

Put it on clean, dry skin and leave it until it comes off by itself.

Give a couple to whoever comes to cheer, so they are there at the km you need them.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.
distance
21.1 km13.1 mi
climb
275.9 m905 ft

The ATOS Halbmarathon Heidelberg is a hilly course of 21.1 km with 275.9 m of climbing. Its lowest point is 110 m and its highest 276 m above sea level.

Trip

Getting a place

Entry through the organiser

Entry details on the organiser’s site →

The organiser, a third party. We take no entries and have no part in the race.

Sources and licence

Last checked.

Course line matched onto OpenStreetMap road geometry: (c) OpenStreetMap contributors, Open Database License 1.0 (ODbL). Elevation sampled from GEDTM30, Global Ensemble Digital Terrain Model at 30 m (v1.2): Elevation: GEDTM30 (Ho & Hengl, OpenGeoHub), CC BY 4.0, Creative Commons Attribution 4.0 International (CC BY 4.0).

Elevation gain computed by us from that line, smoothed over 1 kmsmoothed over 0.6 mi.

The line follows the road down its middle, so it measures 1.50% longer than the certified distance, which is measured on the shortest legal line through every bend.

Date and entry information from the organiser.

Every source and licence behind them →

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