
Mountains-to-Sea Trail 13M & 50K Challenge is a trail running and running race on April 11, 2027 in Durham, NC, featuring the Half Marathon and 50K distances, with entry fees from $50 to $80.
From the Organizer
Join us for some beautiful spring single track trail miles along the MST!
The 18th annual trail race will follow the beautiful Mountains-to-Sea Trail (MST) as it winds through the woods along the Eno River towards Falls Lake.
Not planning to run?
PLEASE SIGN UP TO VOLUNTEER! We need you! Thank you 🙂
**2027** Race will again be held at Riverside High School
MST 13 Miles
MST 50+ KM (Closer to 31 miles)
All participants will receive a custom race shirt, finisher's award, and plenty of refreshments at the finish line! You can expect that we will setup a well-marked course, well-stocked aid stations, accurate results, and a good time! We will do our best to make sure you enjoy your experience!
MST 13M & 50K will be cupless! In an effort to make this a greener event, we ask that participants carry their own hydration device on the course. Water and electrolyte drinks will be available at all aid stations and the finish area.
All participants will receive a custom finishers award, plus additional awards for the top 3 overall finishers (M&F) and the top overall masters finishers (M&F) in each race.
This is a trail race: very different than a road race. You will be exposed to many obstacles you would not normally see in a road race. The course is a single-track hiking trail, so there are roots, rocks, quick turns, logs, woodland critters, and possibly water to avoid. There are plenty of aid stations and volunteers on the course, but if it’s a hot day or if you think you need more fluids, we highly recommend carrying your own.
We ask that you do not run with your dog, run with an unregistered pacer, run with headphones (open ear such as Shokz are OK), run with a jog stroller, and, of course, do not litter on the trail.
This event is proudly presented by Bull City Running Co.
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
69°
Typical Low
45°
Chance of Rain
29%
Based on US Climate Normals data from Durham, 4 mi from the venue.
Host City
Population
288,465
as of 2023
City Elevation
335 ft
Nearest Airport
RDU
Raleigh-Durham International Airport · 11 mi
Time Zone
Eastern Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Approximate location — pin shows the host city, not the exact venue.
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Mountains-to-Sea Trail 13M & 50K Challenge, put it on the calendar, and turn “someday” into a start date.
282
Days to train
Coming Up
Rootrock Trail Run - 5K/10K/Half Marathon
18 miles away
Tough as Trails Race Series
Less than a mile away
Eno River Run
Less than a mile away
Birds of a Feather Trail Trot
11 miles away
From Endurance Grid
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
Mountains-to-Sea Trail 13M & 50K Challenge
Apr 11, 2027