Is crew access allowed on the 100 Miler course?

Yes, crew access is allowed on the 100 Miler course. Crew access depends on the aid station. Crews are allowed at the start/finish and Reisinger Boat Ramp. Crews are allowed at the Nature Center only if they park in the campground entrance overflow lot. On the second and third loops crews are also allowed at Twin Bridges and Little Miami River, and not on the first loop. One crew vehicle per runner, with a CREW pass displayed. Park only in designated spots, never on the grass. Parking violations by a crew can get the runner disqualified.

Are drop bags allowed on the 100 Miler course?

Yes, drop bags are allowed on the 100 Miler course. Mark your bag with your name, bib number, aid station name and distance. Waterproof it. No hard cases. Drop bags go to the start/finish, the Nature Center (no larger than 24 in x 16 in x 16 in) and Little Miami River (small bags only, for a dry sock change after the last large creek crossing of the loop).

Are pacers allowed on the 100 Miler course?

Yes, pacers are allowed on the 100 Miler course. Pacers can join from the second loop. One pacer per runner at a time. Pacers cannot mule for their runner, must sign the waiver and must wear a pacer bib. Pacers can be swapped at aid stations, but the race cannot transport pacers. Pacers follow the same parking rules as crews.

What is the cutoff time for the 100 Miler course?

The overall time limit for the 100 Miler course is 40 hours from the start. Cutoffs are for the safety of runners and volunteers, and to obey park rules and permits. The 40 hour cutoff is generous and should let most runners finish. You must leave the aid station before the cutoff.

East Fork 100 mi/100K/50K/15 mi 100 Miler 2026

The course

Where it goes multi-loop · 22 aid stations · rust marks a stop your crew can reach

Course line from the race's own GPX. Source file. Year of this file not known.

Three loops around William H. Harsha Lake, run counterclockwise from the Indian Mound shelter. The race ends at 11:30 pm on Sunday.

Rolling trail with no significant climbs and many smaller rollers. Several wide creek crossings, with a rope across the deeper ones. Open sun meadow crossings and some running on the shoulder of the park road. Sunscreen and bug spray are a must.

The race

What this one is

Loops around William H. Harsha Lake in East Fork State Park, near Bethel, Ohio. The 50K is one loop, the 100K is two and the 100 miler is three, all counterclockwise from the Indian Mound shelter. The 15 miler is an out and back to the first manned aid station. The course follows mountain bike trails, hiking trails, a short stretch of park road and a good share of the Steve Newman Worldwalker Perimeter Trail, with lake views, a waterfall in a pine forest, open meadows and several creek crossings.

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: not checked yet

Registration: UltraSignup ultrasignup.com

Qualifying: not checked yet

Minimum age: 18 docs.google.com

Transfers: No ultrasignup.com

Deferrals: Yes ultrasignup.com

Running, crewing, pacing or still deciding

How NavRun helps with East Fork 100 mi/100K/50K/15 mi Forty hours, and three stations with a clock on each.

You are running it

You reach Main Aid Station Start/Finish, mile 33.7, before its 7:30pm cutoff, and you already knew that this morning.

An arrival time for all 20 stations, worked out from your own training.

Start free →

You are crewing it

You park at East Fork Nature Center Shelter, 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 Main Aid Station Start/Finish, mile 33.7, warm and fed.

The same sheet says when they reach you.

You are deciding

You find out East Fork 100 mi/100K/50K/15 mi is months of work away, not years, and you start.

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 docs.google.com

Vehicles per runner: 1 docs.google.com

Pacers: Yes docs.google.com

Muling: Not allowed docs.google.com

Drop bags: Yes docs.google.com

Cupless: Yes docs.google.com

Course marking: Fully Marked docs.google.com

Night running: not checked yet

Dogs: not checked yet

Headphones: not checked yet

Crew rules: Crew access depends on the aid station. Crews are allowed at the start/finish and Reisinger Boat Ramp. Crews are allowed at the Nature Center only if they park in the campground entrance overflow lot. On the second and third loops crews are also allowed at Twin Bridges and Little Miami River, and not on the first loop. One crew vehicle per runner, with a CREW pass displayed. Park only in designated spots, never on the grass. Parking violations by a crew can get the runner disqualified. docs.google.com

Pacer rules: Pacers can join from the second loop. One pacer per runner at a time. Pacers cannot mule for their runner, must sign the waiver and must wear a pacer bib. Pacers can be swapped at aid stations, but the race cannot transport pacers. Pacers follow the same parking rules as crews. docs.google.com

Drop bag rules: Mark your bag with your name, bib number, aid station name and distance. Waterproof it. No hard cases. Drop bags go to the start/finish, the Nature Center (no larger than 24 in x 16 in x 16 in) and Little Miami River (small bags only, for a dry sock change after the last large creek crossing of the loop). docs.google.com

Cutoff philosophy: Cutoffs are for the safety of runners and volunteers, and to obey park rules and permits. The 40 hour cutoff is generous and should let most runners finish. You must leave the aid station before the cutoff. docs.google.com

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	Main Aid Station Start/Finish NoneSignal wrong?	?	●	●	?	?	3.00
3.00	Unmanned Water Station, Clover Road Trail NoneSignal wrong?	?	○	?	?	?	4.30
7.30	Reisinger Boat Ramp NoneSignal wrong?	?	●	?	?	?	5.90
13.20	Twin Bridges NoneSignal wrong?	?	○	?	?	?	7.20
20.40	East Fork Nature Center Shelter NoneSignal wrong?	?	●	●	?	?	5.30
25.70	Little Miami River Aid Station NoneSignal wrong?	?	○	●	?	?	4.70
30.40	Unmanned Water Station, Mountain Bike South Trailhead NoneSignal wrong?	?	○	?	?	?	3.30
33.70	Main Aid Station Start/Finish NoneSignal wrong?	7:30pm	●	●	●	?	3.00
36.70	Unmanned Water Station, Clover Road Trail NoneSignal wrong?	?	○	?	?	?	4.30
41.00	Reisinger Boat Ramp NoneSignal wrong?	?	●	?	●	?	5.90
46.90	Twin Bridges NoneSignal wrong?	?	●	?	●	?	7.20
54.10	East Fork Nature Center Shelter NoneSignal wrong?	?	●	●	●	?	5.30
59.40	Little Miami River Aid Station NoneSignal wrong?	?	●	●	●	?	4.70
64.10	Unmanned Water Station, Mountain Bike South Trailhead NoneSignal wrong?	?	○	?	?	?	3.30
67.40	Main Aid Station Start/Finish NoneSignal wrong?	8:30am	●	●	●	?	3.00
70.40	Unmanned Water Station, Clover Road Trail NoneSignal wrong?	?	○	?	?	?	4.30
74.70	Reisinger Boat Ramp NoneSignal wrong?	?	●	?	●	?	5.90
80.60	Twin Bridges NoneSignal wrong?	?	●	?	●	?	7.20
87.80	East Fork Nature Center Shelter NoneSignal wrong?	6:30pm	●	●	●	?	5.30
93.10	Little Miami River Aid Station NoneSignal wrong?	?	●	●	●	?	4.70
97.80	Unmanned Water Station, Mountain Bike South Trailhead NoneSignal wrong?	?	○	?	?	?	3.30
101.10	Main Aid Station Start/Finish NoneSignal wrong?	11:30pm	●	●	?	?	?

Driving your crew

Getting your people there 13 stops with directions the race published.

Main Aid Station Start/Finish mile 0.00

Parking. Park at the beach, just down the hill. Do not park on the grass. Vehicles on the grass are towed.

Twin Bridges mile 13.20

Parking. Limited parking. Do not park on the grass. Leave as soon as your runner leaves so others can park.

East Fork Nature Center Shelter mile 20.40

Parking. Crew must park in the overflow lot at the campground entrance and walk about half a mile to the aid station. There is no parking at the aid station.

Little Miami River Aid Station mile 25.70

Parking. Limited parking. Overflow parking is down the hill at Spillway Dam. The aid station is down the trail from the parking lot.

Main Aid Station Start/Finish mile 33.70 cutoff 7:30pm

Parking. Park at the beach, just down the hill. Do not park on the grass. Vehicles on the grass are towed.

Twin Bridges mile 46.90

Parking. Limited parking. Do not park on the grass. Leave as soon as your runner leaves so others can park.

East Fork Nature Center Shelter mile 54.10

Parking. Crew must park in the overflow lot at the campground entrance and walk about half a mile to the aid station. There is no parking at the aid station.

Little Miami River Aid Station mile 59.40

Parking. Limited parking. Overflow parking is down the hill at Spillway Dam. The aid station is down the trail from the parking lot.

Main Aid Station Start/Finish mile 67.40 cutoff 8:30am

Parking. Park at the beach, just down the hill. Do not park on the grass. Vehicles on the grass are towed.

Twin Bridges mile 80.60

Parking. Limited parking. Do not park on the grass. Leave as soon as your runner leaves so others can park.

East Fork Nature Center Shelter mile 87.80 cutoff 6:30pm

Parking. Crew must park in the overflow lot at the campground entrance and walk about half a mile to the aid station. There is no parking at the aid station.

Little Miami River Aid Station mile 93.10

Parking. Limited parking. Overflow parking is down the hill at Spillway Dam. The aid station is down the trail from the parking lot.

Main Aid Station Start/Finish mile 101.10 cutoff 11:30pm

Parking. Park at the beach, just down the hill. Do not park on the grass. Vehicles on the grass are towed.

Same race, other lines

Other distances and other years

Other distances: 50K (33.57 miles)
100K
15 Miler

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.

2 people have been out there with a camera or a microphone.

Social account

Empower Ultras on Facebook

Social account

Empower Ultras on Instagram

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.

Were you out there? Say which stops a text got out from.

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

What year? Were you there?

Optional, and it decides nothing.

Your phone company:

Which stops did a text get out from?

Leave a stop blank if you did not try, or do not remember.

100 Miler

100K

50K

15 Miler

Unmanned Water Station, Clover Road Trail mile 3.0
Yes
No
Reisinger Boat Ramp mile 7.3
Yes
No

Your email:

Optional. Never shown.

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.

East Fork 100 mi/100K/50K/15 mi

Who's going to East Fork 100 mi/100K/50K/15 mi?

Where it goes multi-loop · 22 aid stations · rust marks a stop your crew can reach

What this one is

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

How NavRun helps with East Fork 100 mi/100K/50K/15 mi Forty hours, and three stations with a clock on each.

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

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

Getting your people there 13 stops with directions the race published.

Other distances and other years

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

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

Which stops did a text get out from?

100 Miler

100K

50K

15 Miler

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