East Fork 100mi, 100K, 50K, and 15mi 2026 — Bethel, OH

East Fork 100 mi,100K, 50K, and 15 mi East Fork races are back for the third year in collaboration with our partner Tri State Running Company ! 100 miles, 100K, 50K and 15 miles races are being offered. These are the only 100 mi and 100K races in the Southwest Ohio area, don't miss out! The course will travel counterclockwise on beautiful and challenging trails around the William H. Harsha Lake in East Fork State Park. The entire loop is 33-ish miles, so runners will do three loops for the 100 miles, two for the 100K, and one for the 50K. The 15 mile course is an out and back on beautiful rolling trails (to the first Manned AS and back). The course will follow some mountain bike trails, hiking trails, a tiny bit of park road and a fair amount of the Steve Newman Worldwalker Perimeter trail. In August most of the trails should be fairly dry but you will cross several creeks, giving you a chance to cool off (they will feel amazing in August)! Throughout your journey you will experience some beautiful lake views, glorious single track trails, a waterfall in a beautiful pine forest area, an open field and some refreshing creek crossings. This is an experience you don’t want to miss! NEW IN 2025 - WE ARE NOW PART OF rabbit TRAIL TOUR NEW THIS YEAR: 7:30 am start for 100 mi/100K, 7 am start for 50K to avoid crowding on the trails. 8 am start for 15 mi Race guide: RACE GUIDE Cutoff 100 mi - 40 HOUR CUTOFF TO COMPLETE 100 MILE RACE (11:30 PM on Sunday August 24)! We want you to succeed! -12 hours to complete first loop (7:30pm on Saturday) -13 hours to complete second loop (8:30 am on Sunday) -15 hours to complete third loop (11:30 on Sunday) Additionally there is a hard cutoff at the Nature Center Aid Station on the third loop (87.8 mi) at 35 hours (6:30 pm) 100K - 40 hour cutoff -18 hours to complete first loop (1:30 amSunday) -22 hours to complete second loop (11:30 pm Sunday) Additionally there is a hard cutoff at the Nature Center Aid Station (54.1 mile mark) for 100K runners at 35 hours (6 pm) 50K - There is a 40 hour cutoff to complete 50K. 15 Miler - There is a 12 hour cut off to complete 15 mi (8 pm Saturday). Cutoffs are for your safety and for safety of your volunteers and to obey park rules and our permits. You must LEAVE the aid station before the cutoff. Please respect the cutoffs and listen to race officials and volunteers. Aid Stations and Distances Our course runs a little long. More fun! No worries, the 40 hour cutoff allows most runners to complete the course as long as they are moving forward with purpose. The course is a rolling course. There are no significant climbs, but lots of smaller rollers that can be taxing. There are gorgeous views of the lake, beautiful wooded areas, and meadows that, although flat, can be hard in the open sun. There is also some running on the shoulder of the park road, but majority of the course is on the trails. 50K is roughly 33.7 miles and 100K is about 67.4 miles. Just one extra mile for 100 mile distance (101.1 mi). COURSE MAP: Caltopo map And: Gaia map AID STATIONS 1. Main Aid Station Start/Finish Mile 0/ 33.7 /67.4/ 101.1 miles - GPS coordinates: 39.012294, -84.133044 - Crews allowed for 100mi and 100K runners 2. UnManned Water Station Clover Road Trail- Mile 3.0 / 36.7 / 70.4 - No crew access - Water only 3. Reisinger Boat Ramp - Mile 7.3 / 41 / 74.7 GPS 38.998878, -84.090687 - Fully manned AS - Turn around point for 15 mi runners - Crew and Pacer access - Pit toilets 4. Twin Bridges - Mile 13.2 / 46.9/ 80.6 GPS: 39.021363, -84.084148 - Fully manned AS - Crew access for 100K and 100mi runners on 2nd and 3rd loops only - Limited Parking - Portalets available 5. East Fork Nature Center Shelter - Mile 20.4 / 54.1/ 87.8 GPS: 39.039524, -84.096980 - Fully manned AS - No crew access - Pacers allowed but must be dropped off - Drop bags - Bathrooms close by - Hard cutoff: 4 pm for the last loop 6. Little Miami River -Mile 26.3 / 60/ 93.7 NEW LOCATION THIS YEAR: RIGHT BY THE CREEK GPS: 39.03079° N, 84.15086° W - Fully manned AS - Crew access for 100K and 100mi runners on 2nd and 3rd loops only - Limited Parking NEW THIS YEAR: small dropbags allowed (think a pair of socks etc) - our volunteers will need to carry your dropbags up and down a long steep hill so please keep dropbags to the minimum at that AS - Portalets available 7. Unmanned Water Station Mountain Bike South Trail Head - Mile 30.4 /64.1/97.8 GPS: 39.006651, -84.142046 -Water only, no crew access. Cupless Race and Mandatory Gear Our event is a cupless race. Please carry your bottles/bladder with you at all times. Also please carry a reusable cup for other drinks at Aid Station (Coke, Ginger Ale etc). Cups will be provided for hot liquids. There will be a limited number of reusable hard plastic cups at Aid Stations (these cups must stay at the AS and will be cleaned/disinfected between uses). August in Ohio can be very hot and humid. Please be mindful and hydrate, and carry enough liquids with you between a