Virtual tour (by ayvri.com)
Runners may extend the 100 k run to 100 miles by adding a 75 k prologue. The race organisation for this prologue is limited to course marking, aid stations with limited supplies and coordination of the resources (volunteers, provisions) supplied by the runners. The first loop of the 100 mile course is for the experienced ultrarunner with good orienteering skills and "survival" knowledge. You might be on your own the whole night through!
In those first 75 k race organization guarantees only for aid stations supplied with water, limited foods and runner's drop bags. Check point and aid station personnel will only be present if runners supply enough volunteers. This way additional aid will be available (e.g. hot soup at k 55 / 69). So bring friends or family along! Additionally you can find several springs along the course. From k 87 (Stadium) the 100 mi runners will use the manned and well stocked aid stations of the 100 k course.
Runners may switch between the 100 mile and the 100 k distance, but only as long as there are vacancies in the other race. Change of distance has priority over the waiting list if your opening spot can be filled.
Regulations for the 100 mile run:
1. Open start on Friday from 14:00 to 21:00 at any full hour. You need to indicate your starting time when you pick up your bib number.
2. Each participant should select his departure time in such a fashion as to hit the opening times of the aid stations of the 100 k run in the second half. The opening times are shown on the maps of the 100 k course. All cutoff times apply for 100 k and 100 mi runners alike. Additionally you must not leave the stadium (k 87) before 4:30 a.m.
3. Several check points are distributed over the course. If there will not be sufficient volunteers for these check points, they will be unmanned: there will be lists where you need to register your time (as control and for your safety) and there will be orienteering punches with which you will have to punch your bib number.
4. I offer to coordinate the volunteers provided by the runners. Convenient (easily accessible by car) aid station locations Hörgering (21 k), Adlgass (55 k) and Mauthäusl (69 k) as well as check point Lechner Hütte (26 k). Check points Stoißer Alm (39 k) and Steiner Alm (50 k) can only be reached on foot or by MTB, Kohler Alm (59 k) only on foot.
5. The prologue leads first N then E and S from Ruhpolding over Zinnkopf, Teisenberg, Adlgass, Kohler Alm, Weissbach to Zwing, where you will join the 100 k course close to its k 13. Easily runnable forestry roads alter with difficult, technical trail sections. The toughest climb is up and down Kohler Alm (59) in the middle of the night. This prologue adds 61 k and about 3000 m of climb to the 100 k course.
6. If necessary, you may choose an official shortcut after notifying the aid station crew: At k 136 (V8, Egg) until 21:00 to a total of 146 k, thus omitting Hochfelln mountain.
7. Between Hammer (k 27) and the stadium the course is marked with night markers (reflectors), However we advise each participant to bring along a map of the course and/or a GPS-device with the track.