General Information

Note: Due to damage to the canal the 2019 course has been modified to exclude the portion between Brunswick AS and Nolands Ferry AS. Please see the revised 2019 course description here.

The C&O Canal 100 mile race will feature one ~60 mile loop and one ~40 mile loop almost entirely on the C&O Canal starting at Camp Manidokan  and running along the canal between Antietam Creek and Noland's Ferry. See the course information and maps pages for more specific information. The 2019 running of the C&O Canal 100 mile race will occur on April 27th-28th and the last weekend of April for all subsequent events. The race will begin at 7:00AM on April 27th, and the cutoff time will be 1:00PM on April 28th (30 hours). All runners finishing under the time limit will receive a belt buckle and a pat on the back as recognition of their achievement.

The C&O Canal 100 mile is ideal for anyone looking to run their first 100 mile race, anyone looking to run fast, or anyone looking to enjoy a nice scenic 100 mile tour along the Potomac River near the Appalachian mountains and the borders of three states (MD/WV/VA). The combination of temperate weather (average high/low of 68F/44F), lack of elevation gain (flat with one small hill from the Canal up to Camp Manidokan) and easy terrain for night-time navigation. The course will be well stocked with aid, each loop of the course will feature 5-6 aid stations, some of which you will encounter more than once per loop. See the aid station page for a detailed listing of the aid stations and the distances between each.

Pacers are allowed at any point after the "halfway" mark at mile 60. Pacers do not need to be officially registered but we ask that they moderate themselves at the aid stations. Pacers cannot carry water/food/etc. ("muling") for their runners. No bike pacing is allowed. Crews will only be able to meet runners at the Brunswick aid station and Camp Manidokan. Please do not ask your crew to meet you at a non-official aid station (e.g. Point of Rocks). Pacers may be dropped off at any aid station but you may not park. Crews can pick up a runner at any aid station but they may not park at any aid station other than Brunswick or Camp Manidokan. Crew members who do not abide by this rule will risk disqualification of their runner from the race, no exceptions! This rule is enforced to easy access to all canal users such as walkers, bikers, other runners, etc., so we need to respect their right to use the canal.

If at any point a runner drops from the race you must notify an aid station that you are dropping and turn in your race number. Failure to do this can result in being banned from future C&O 100 events. We do this to save your emergency contacts a 3AM wake up call when you are asleep in bed and prevent us from having to search for someone who has already left the course. If for any reason you need to find a captain they will be wearing orange safety vests with "CAPTAIN" on the back, so they should be easy to spot.

Pre-Race Dinner

The evening before the race we will be having a pre-race pasta dinner at the Camp Manidokan dining hall for runners, friends, family, loved ones, etc. You can pay for this during registration. This will be a great opportunity to meet new people, socialize, and hear advice from the race director and runners who have completed the race in the past. Typical fare includes varieties of pasta, sauces, bread, toppings, drinks, salad, and desert. Vegetarian friendly! Attendance to the pre-race dinner is optional, please purchase tickets to attend for you and or your friends/family at registration.


For those of you who may not live within driving distance, there are two major airports relatively close to Camp Manidokan, the race headquarters and start/halfway/finish point. These airports would be Dulles International Airport (IAD) and Baltimore-Washington International Airport (BWI). BWI is a hub for Southwest and IAD is a hub for United Airlines. Dulles is slightly closer (ignoring traffic).


For a small $3 fee, overnight camping by your car Friday into Sunday is available for anyone who may want to sleep in a little extra on race morning. During registration indicate that you would like to camp overnight and you can pay when you pick up your race number. This camping is available for both runners and crews/pacers who want to hang out at the HQ. We will have plenty of space for everyone.

Slightly further away would be locations in Harper's Ferry (~20 minutes) or Frederick (~25 minutes). There is an Econo Lodge in Harper's Ferry.

Camp Manidokan also offers cabins for rent. Please contact them directly for reservations. Those cabins go quickly!

Below are some other possible places to stay in those locations with reviews and suggestions from

Harper's Ferry, WV

Frederick, MD

Training Runs

There will be two official training runs on the course. Dates and locations are below, starting time TBD (based on feedback from runners planning to attend). All runners are welcome to attend! Light breakfast fare and typical aid station eats will be provided to all in attendance. Details about the route and aid drops will be sent to entrants via email closer to the training date. If you would like information but you have not registered please contact cocanal100[at] prior to the training run date.

Training Run #1

Date: Sunday, March 17th
Route: ~20 mi
Time: 8AM

Training Run #2

Date: Saturday, March 30th
Route: ~30 mi
Time: 8AM

Runner Information Packet

Below is the 2019 runner information packet and all previous packets.

CO100 Info Packet 2019.pdf CO100 Info Packet 2019.pdf
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CO100 Info Packet 2018.pdf CO100 Info Packet 2018.pdf
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CO100 Info Packet 2017.pdf CO100 Info Packet 2017.pdf
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CO100 Packet 2016v2.pdf CO100 Packet 2016v2.pdf
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CO100 Packet 2015v3.pdf CO100 Packet 2015v3.pdf
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CO100 Packet 2014v2.pdf CO100 Packet 2014v2.pdf
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CO100InfoPacket033113.pdf CO100InfoPacket033113.pdf
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