Is crew access allowed on the 100 Miler course?

Yes, crew access is allowed on the 100 Miler course. Crews can meet runners only at the Brunswick aid station (park in the MARC train lot) and at Camp Manidokan. At any other aid station a crew can drop off or pick up a pacer, or pick up a runner who has dropped, but may not park. A crew seen helping a runner anywhere else puts that runner at risk of disqualification.

Are drop bags allowed on the 100 Miler course?

Yes, drop bags are allowed on the 100 Miler course. One drop bag each at Brunswick and Manidokan, and no other aid station. Brunswick bags must be no larger than 6 x 8 x 16 inches or they are turned away. Manidokan bags have no size limit.

Are pacers allowed on the 100 Miler course?

Yes, pacers are allowed on the 100 Miler course. A pacer may join starting at mile 59.6. Pacers may join after the second pass through Brunswick (mile 59.6), one at a time, on foot only. No bike pacing. Pacers may not carry water, food or gear for their runner, and may not have drop bags.

What is the cutoff time for the 100 Miler course?

The overall time limit for the 100 Miler course is 30 hours from the start.

Ultras · US · MD

C&O Canal 100

On the calendar

The date is set. Entry has not opened. Registration opens January 1, 2027 at 10:00 AM Eastern and closes April 1, 2027.

Race dateApril 24-25, 2027

Duration2 days

Start7:00am

Whenin 182 days

First held2013

Who's going to C&O Canal 100?

I'm running itPlan your weeks and your aid station times I'm crewingWhen to leave, where to park, at every stop I'm pacing or cheeringAsk your runner for their Out Here link

Free. You can start with nothing.

Official website Entry Results Aid stations Crew access Notify me if this race changes

Free, and always will be. NavRun makes money from race-day planning for runners who want it, never from this. Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.

Distance The race

100 Mile

Climb

not checked yet

Descent

not checked yet

High point

not checked yet

Time limit The race

30:00:00

Aid stations

Started

not checked yet

Finished

not checked yet

Finish rate

not checked yet

The course

Where it goes multi-loop · 24 aid stations · rust marks a stop your crew can reach

Three loops from Camp Manidokan onto the C&O Canal towpath, running between Antietam and Brunswick, Maryland. The first loop adds an out and back to a north turnaround that has check-in only. Loops two and three skip it.

Almost entirely flat. The towpath is packed dirt with small gravel rocks that wear on your feet as the race goes on, so the race advises alternate shoes in your drop bags. Mostly shaded, with a few stretches of prolonged sun.

The race

What this one is

A 100 mile race on the C&O Canal towpath in Maryland, run as three loops from Camp Manidokan near Knoxville on the last weekend of April. The towpath is almost entirely flat packed dirt, and the race welcomes first-time 100 milers as well as runners chasing a fast time.

The course dates to 2012, when another planned 100 mile race had to switch at the last minute to what is now the C&O Canal 100 route. The first official race was held April 27-28, 2013.

Getting in

Getting in Entry, lottery and what the race asks of you before race day.

Lottery: not checked yet

Lottery opens: not checked yet

Lottery draw: not checked yet

Field cap: 250 cocanal100.com

Registration: UltraSignup ultrasignup.com

Qualifying: not checked yet

Minimum age: not checked yet

Transfers: not checked yet

Deferrals: No cocanal100.com

Running, crewing, pacing or still deciding

How NavRun helps with C&O Canal 100 Thirty hours, and three stations with a clock on each.

You are running it

You reach Manidokan, mile 69.2, before its 3:45am cutoff, and you already knew that this morning.

An arrival time for all 22 stations, worked out from your own training.

Start free →

You are crewing it

You park at Brunswick, and you are standing there when they come in.

One link from your runner, with the stop and the window they arrive in.

You are pacing

You are at Brunswick, mile 59.6, warm and fed, and you know you have 40 miles ahead of you.

The same sheet says when they reach you.

You are deciding

You find out C&O Canal 100 is months of work away, not years, and you enter.

Put in a race you have already run. NavRun shows you where this one sits from where you are.

No account needed →

Crew access, pacers and drop bags

The rules that shape your day Anything marked "not checked yet" is a gap in what we hold, never a no from the race.

Crew allowed: Yes cocanal100.com

Vehicles per runner: not checked yet

Pacers: Yes, from mile 59.60 cocanal100.com

Muling: Not allowed cocanal100.com

Drop bags: Yes cocanal100.com

Cupless: not checked yet

Course marking: Partially Marked cocanal100.com

Night running: Yes cocanal100.com

Dogs: not checked yet

Headphones: not checked yet

Crew rules: Crews can meet runners only at the Brunswick aid station (park in the MARC train lot) and at Camp Manidokan. At any other aid station a crew can drop off or pick up a pacer, or pick up a runner who has dropped, but may not park. A crew seen helping a runner anywhere else puts that runner at risk of disqualification. cocanal100.com

Pacer rules: Pacers may join after the second pass through Brunswick (mile 59.6), one at a time, on foot only. No bike pacing. Pacers may not carry water, food or gear for their runner, and may not have drop bags. cocanal100.com

Drop bag rules: One drop bag each at Brunswick and Manidokan, and no other aid station. Brunswick bags must be no larger than 6 x 8 x 16 inches or they are turned away. Manidokan bags have no size limit. cocanal100.com

Cutoff philosophy: not checked yet

Aid stations

Every stop, and what you get there ● yes ○ no ? nobody has checked – does not apply to this race

Mile	Station	Cutoff	Crew access	Bag	Pacer	Med	To next
0.00	Manidokan None · basic first aid · Signal wrong?	?	●	●	?	●	1.40
1.40	Dargan Bend None · basic first aid · Signal wrong?	?	○	○	?	●	4.90
6.30	Antietam Campground None · basic first aid · Signal wrong?	?	○	○	?	●	3.80
10.10	North Turnaround NoneSignal wrong?	?	○	○	?	?	3.80
13.90	Antietam Campground None · basic first aid · Signal wrong?	?	○	○	?	●	4.90
18.80	Dargan Bend None · basic first aid · Signal wrong?	?	○	○	?	●	6.90
25.70	Keep Tryst Rd. None · basic first aid · Signal wrong?	?	○	○	?	●	3.10
28.80	Brunswick None · basic first aid · Signal wrong?	?	●	●	?	●	3.10
31.90	Keep Tryst Rd. None · basic first aid · Signal wrong?	?	○	○	?	●	6.50
38.40	Manidokan None · basic first aid · Signal wrong?	?	●	●	?	●	1.40
39.80	Dargan Bend None · basic first aid · Signal wrong?	?	○	○	?	●	4.90
44.70	Antietam Campground None · basic first aid · Signal wrong?	?	○	○	?	●	4.90
49.60	Dargan Bend None · basic first aid · Signal wrong?	?	○	○	?	●	6.90
56.50	Keep Tryst None · basic first aid · Signal wrong?	?	○	○	?	●	3.10
59.60	Brunswick None · basic first aid · Signal wrong?	?	●	●	●	●	3.10
62.70	Keep Tryst None · basic first aid · Signal wrong?	?	○	○	?	●	6.50
69.20	Manidokan None · basic first aid · Signal wrong?	3:45am	●	●	?	●	1.40
70.60	Dargan Bend None · basic first aid · Signal wrong?	?	○	○	?	●	4.90
75.50	Antietam Campground None · basic first aid · Signal wrong?	?	○	○	?	●	4.90
80.40	Dargan Bend None · basic first aid · Signal wrong?	6:45am	○	○	?	●	6.90
87.30	Keep Tryst Rd. None · basic first aid · Signal wrong?	?	○	○	?	●	3.10
90.40	Brunswick None · basic first aid · Signal wrong?	9:45am	●	●	?	●	3.10
93.50	Keep Tryst Rd. None · basic first aid · Signal wrong?	?	○	○	?	●	6.50
100.00	Manidokan None · basic first aid · Signal wrong?	1:00pm	●	●	?	●	?

Driving your crew

Getting your people there 3 stops with directions the race published.

Brunswick mile 28.80

Parking. Crews park in the MARC train lot, not in the canal access parking areas.

Brunswick mile 59.60

Parking. Crews park in the MARC train lot, not in the canal access parking areas.

Brunswick mile 90.40 cutoff 9:45am

Parking. Crews park in the MARC train lot, not in the canal access parking areas.

What it looks like out there

Somebody has been out there with a camera the tables say the climb is long. these say what long feels like.

One person has been out there with a camera or a microphone.

Social account

C&O Canal 100

Social account

These are other people's work and we link straight to them. Watching costs nothing and needs no account. More of them: every race we hold, on film.

Add to this page

What you know every one of these is read by a person before it changes anything

Ran this race? Tell the next runner what you know.

Nobody sees it until we have read it. No account, no sign-in.

Which distance? Leave blank if it applies to the whole race.

Which stop? Leave blank if it is not about one particular stop.

Give it a short title: Optional. Something like “Cal Street, mile 62 to 78”.

What do you wish someone had told you? Write it the way you would say it to someone at the start line.

Were you there? Optional, and it decides nothing. It only tells the next runner where this is coming from.

What year? Optional.

Your email: Optional, and never shown on the page. Only so we can ask you a question about this note.

Website: Leave this field blank.

See something wrong or out of date? Suggest an edit.

This changes nothing on the page on its own. Somebody checks it against the race first.

Which detail? Optional. Filled in for you when you start from a specific line on the page.

What does the page say now? Copy it as it appears, so we can find it.

What should it say? The corrected value.

How do you know? Required. Where it came from: the race email, the runner manual, what you saw on the day.

A link that shows it: Optional.

Or a photo of it: Optional. A screenshot or a photo of the sign works.

Were you there? Optional, and it decides nothing.

What year? Optional.

Your email: Optional, only so we can come back to you about this correction.

Which distance? Leave blank if it is about the whole race.

Which stop? Leave blank if it is not about one particular stop.

Website: Leave this field blank.

Seen a course preview or a film of this one? Send it over.

Somebody watches it before it goes anywhere near this page. What we are after is footage of this course, on the ground. If it would be just as true of any other race, it is not this.

What does it show that the page cannot? Required. A line is plenty. Where the climbs are, what the footing does, what the last twenty miles look like.

Were you there? Optional, and it decides nothing.

What year? Optional.

Your email: Optional, and never shown on the page. Only so we can ask you a question about this one.

Where is it? A YouTube link, a race report, a photo gallery, whatever it is.

What kind of thing is it?

Who made it? Optional, and we credit them on the page.

Website: Leave this field blank.

Have the GPX? Send us the link.

We want the address of the file the race publishes, not the file. We download it from there so the page can say where the line came from.

Are you the race director? Get in touch and we'll make it right.

We read every one of these and we write back. Every fact here carries the source it came from, and the way a wrong one gets fixed is a person checking it against what you tell us.

Where this came from. Every fact on this page records its source and when we last checked it: 202 sources for this race. Hover a source link to read the sentence it came from.

41% of what we track for a course is filled in. The rest says "not checked yet" rather than guessing.

See something wrong or out of date? Suggest an edit
Ran this race? Tell the next runner what you know
Were you out there? Say which stops a text got out from
Got footage of this course? Send us the link
Are you the race director? Get in touch and we'll make it right.
Anything else: [email protected]

Ultras change. We will tell you when this one does.

Cutoffs move, races get postponed, lotteries open and close. We read the race's own sources and record where every fact came from. Put your email in and we will send you what changed, and where we read it.

No account, and nothing to cancel.

What happens to your email. Nothing else. I do not sell it, and I will not send you anything except this race changing. One click gets you out.

I keep this catalog because the information is scattered and hard to trust. Telling you when it moves is the same job.