
The Grayson Highlands 50 miles are, at their core, one long out-and-back: from the high ground of the Virginia state park that gives the race its name you drop to around 960 metres, turn, and run all of it back up. Your preparation has to deliver two things: legs for the return and a reserve for the steepest climb of the day, which comes right at the end.
The opening stays high. From a start just under 1,500 metres, two short climbs at km 2 and km 8 lead to the top of the day, a little over 1,600 metres at km 12. From km 18 comes the heart of the course, a line you run twice. It first falls to around 1,050 metres, climbs over a ridge to just above 1,300 metres, then sinks to the turnaround at the lowest point of the day at km 41.
From there you take the same way back, and every descent becomes a climb. The ramps from km 41 and km 44 lift you out of the low point, with pitches above 20 percent. Beyond the ridge comes the second drop into the valley at km 58, and after it you run up to km 65 on exactly the slope you ran down early in the race.
The final section leaves that line and heads back up. Grayson Highlands State Park is known for its ponies and wide views, but by now something else counts: there is one more descent before the hardest climb of the day starts at km 79, 230 metres of gain in 1.7 kilometres. At its top the loop closes and the finish sits back at the height of the start.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 2.2 | 2 km | 5.6 % | 10.9 % | +109 m | Cat. 4 |
| km 7.9 | 1.2 km | 9.4 % | 13.9 % | +112 m | Cat. 4 |
| km 28.6 | 1.8 km | 9.1 % | 22.3 % | +159 m | Cat. 4 |
| km 41.5 | 2.5 km | 7.7 % | 27.1 % | +191 m | Cat. 3 |
| km 44.4 | 1.5 km | 9.6 % | 22.5 % | +139 m | Cat. 4 |
| km 58.7 | 2.3 km | 6.3 % | 20.4 % | +142 m | Cat. 4 |
| km 61.2 | 3.6 km | 6.3 % | 18 % | +229 m | Cat. 3 |
| km 78.7 | 1.7 km | 13.5 % | 22.5 % | +230 m | Cat. 3 |
Climb categories follow the road-cycling convention and rate the terrain itself (length and gradient) regardless of sport: Cat. 4 marks the easiest rated climbs, Cat. 1 the hardest, and HC (hors catégorie, “beyond categorization”) is reserved for the most brutal ascents. Short climbs below the Cat. 4 threshold stay unrated.
Split the day into three pieces: the first 18 kilometres as a run-up, the out-and-back as the actual race, and the closing section as whatever that leaves you. Downhill dominates on the way out, and that is exactly where the false sense of speed comes from. Every descent you push here tires your quads, and every one of them is waiting on the return as a climb.
The race is decided between km 58 and km 65. You gain around 320 metres almost without a break, with more than 50 kilometres already done, on a slope you already know. If you can still hike evenly here and jog the easier stretches, you will reach the finish. If you stop here, you ran km 18 to km 41 too fast.
The main trap is believing the work is over once the return is done. The final climb is pure hiking ground with pitches above 20 percent, and you arrive at it off a descent, on legs that have not been climbing. Budget real time for it and hold back enough energy to get there.

Expect roughly 13 to 19 hours depending on your form. This is a steady aerobic effort of alternating hiking and running, not a race of surges. Because nearly nine tenths of the course is either climbing or falling, your speed on the flat matters less than how economically you handle the switch between the two over many hours.
The decisive phase asks for climbing on tired legs. Build your long sessions so that the biggest climbs come late: several hours on rolling ground, then a slope of half an hour or more that you hike at an even effort. The ideal session goes down and back up the same way, because that is what the day demands.
Your quads decide the second half. Add long downhill sections and extend them gradually, so that around 590 metres of descent in one go does not surprise your legs. Two long days back to back prepare you for running on pre-fatigue without needing one enormous outing. Practise steep hiking at the end of such days, since nothing else substitutes for it on the final climb.
Nearly 700 metres separate the highest and lowest points, and the race falls in early May. That puts your preparation in late winter and spring. Test kit and fuelling on long runs so that both work for the full duration and at every height the course reaches.

Download the Grayson Highlands course as a GPX file for your watch or bike computer.
Ben connects your goal, the course, current load, recovery, and calendar. Your plan stays pointed at race day even when real life is not perfectly plannable.
Grayson Highlands is 80.47 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
Grayson Highlands has around 2,328 m of elevation gain over 80.47 km. That affects pacing, muscular load, and preparation for late-race sections.
Grayson Highlands is classified as Hilly, averaging 28.9 vertical metres per kilometre. 11% of the route is flat, 29% climbs moderately (2 to 6%) and 14% is steeper than 6%.
The hardest climb of Grayson Highlands starts at kilometre 78.7, runs for 1.7 km at an average of 13.5% and gains 230 metres. Cycling-convention rating: Cat. 3. 8 climbs are mapped in total.
Yes, Grayson Highlands is laid out as a loop: start and finish are in the same place.
Yes. The Grayson Highlands course is on this page as a free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
Preparation for Grayson Highlands should account for 80.47 km, 2,328 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
The pacing strategy for Grayson Highlands should reflect 80.47 km, 2,328 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
Grayson Highlands takes place on May 1, 2027.
Grayson Highlands takes place in Mouth of Wilson, United States.
Grayson Highlands offers 4 distances — 50 Mile: 80.47 km; 50K: 50 km; 25K: 25 km; 8 Mile: 12.88 km.
Registration runs through the organiser: runbumtours.com. YOUB shows you the course, elevation profile and training plan for your preparation.