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CDRC 100km Ultra

calendar_today 12 Sep, 2026

directions_run Running

CDRC 100km Ultra

About the Event

Returning for its second edition, this unique running challenge invites participants to cover 4.2-mile laps around the clock, aiming to complete an impressive total of 100 kilometers over a span of just 15 hours. The event is designed as a series of hour-long segments where runners can join at any time and continue for as long or short a period as they wish within each segment. This format allows both seasoned endurance athletes and casual joggers to participate, offering flexibility in pacing and duration while encouraging steady progress toward the ambitious 100km goal.
The route itself is meticulously planned with safety and comfort in mind, featuring well-lit paths and ample water stations along the way. Runners can expect a supportive atmosphere as fellow participants cheer each other on throughout the day and night, fostering camaraderie among competitors of all levels. As daylight shifts into evening and back again, runners will experience changing conditions that add an extra layer of challenge to their efforts.
With its focus on endurance and community spirit, this event stands out as a memorable test for anyone looking to push their limits while being part of something special in the world of running challenges.

Races Offered

CDRC 100km Ultra

Sep 12, 2026

straighten

Distance — 100K

terrain

Type — Running

timer

05:00

Weather History

These values represent the 3-year monthly averages for September in Edinburgh.

thermostat Temperature
10.1° / 16.1°
wb_sunny Feels like
6.9° / 13.4°
light_mode Avg sunshine hours
7h 47m
water_drop Avg rainfall
2.7 mm
ac_unit Avg snowfall
air Avg wind speed
15.1 km/h (Gentle breeze)
opacity Sweat loss rate
Low
terrain Course conditions
Firm and slightly soft
sunny Max UV Index
Moderate (3.5)
humidity_mid Humidity
80.1%
wb_twilight Sunrise
06:45
nightlight Sunset
19:28

About Edinburgh

Learn more about the host city, Edinburgh.

Scenic view of

Edinburgh is the capital of Scotland, located in the Central Belt of the country. With a population of 526,470 in the urban area in 2021, and 901,455 in the metropolitans, Edinburgh fizzes with a cosmopolitan yet uniquely Scottish atmosphere. Old volcanoes ensure a dramatic natural setting, with the imposing castle atop one. The city combines medieval relics, Georgian grandeur and a powerful layer of modern life with contemporary avant-garde. Medieval palaces, Gothic churches and fascinating historical buildings rub shoulders with the best of modern architecture, such as the Scottish Parliament and the National Museum of Scotland. Variously dubbed "Auld Reekie" or "Athens of the North", but usually just plain "Embruh", it hosts great restaurants, shops, pubs, wild and mild clubs, and an unrivalled programme of events and festivals throughout the year.

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Hotels & Places to Stay

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