Thinking about running your first 100-mile race but not feeling confident?
Find a pacer to make it a little easier and a lot more fun!
Running 100 miles is tough, but you don’t have to do it alone. A pacer can keep you motivated, on track, and moving forward when things get tough.
Connect with experienced runners who can guide you through the highs and lows of your race!
Become a Pacer
Having completed a 100-mile (or two), you know what it takes.
Help fellow runners achieve their goals by pacing or crewing!
Pacing is more than just running alongside—it's about motivation, strategy, and support.
Share your experience, help others push through the tough miles, and be part of their success story!
Connect with Runners
Looking for a few fellas to be part of your next big trail adventure out there?
Share your event and connect with other runners to make it happen.
Running is better together!
Find training partners, crew members, or pacers for your next big race.
Share your plans, connect with like-minded runners, and turn solo adventures into unforgettable experiences.
Run Square is all about bringing runners together!
Whether it’s pacing, crewing,
offering a place to stay, sharing tips, helping with transportation, or providing moral support, there’s
always a way to lend a hand.
This is your place to connect and make a real difference in a
runner’s journey.
Inspired to join the Run Square community? See how it works and get ready to connect!
See Run Square in Action
Check out these screenshots to see how Run Square helps runners connect and achieve their goals.
Ready to take your running to the next level? Download Run Square today and start your journey!
From the Blog
Check out our latest articles below, and visit our blog for even more.
Check out these top picks for your next running challenge.
Hardrock 100
Fri, Jul 10, 2026 • Silverton, CO
The Hardrock Hundred Mile Endurance Run is an ultramarathon of 102.5 miles in length, plus 33,197 feet of climb and 33,197 feet of descent for a total elevation change of 66,394 feet, at an average elevation of over 11,000 feet. The run is held on a loop course on 4WD roads, dirt trails, and cross country in Southern Colorado's San Juan Range, USA. In 2025, the run will be in the counter-clockwise direction.
Runners may have only one pacer on course with them at a time. Pacers may meet their runners at crew access aid stations only.
Tall trees. Tough trails.
A 100-mile endurance race through Washington’s Cascade mountains.
Pacers can start at Hyak (54m).
Pacers must be on foot (no mountain bikes) except from Silver Creek to the finish line. One pacer per runner except from Silver Creek to the finish line.
Runners with pacers should still carry their own gear (no Leadville muling).
Come explore the wild west of Montana! A Western States Qualifier! With around 23,000 ft of vertical gain reaching heights of 10,200 ft. Point to Point. Primarily single track. Extreme technical descents and ascents. Long sections with no trail, two track, and the occasional forest service road, this event is one of a kind. The course is considered extremely rugged, extreme exposure, and challenging.
Pacers are allowed starting at Half Moon Aid Station.
No Muling.
Only one pacer at a time allowed with their runner.
The Oregon Cascades 100 is a point-to-point 100-mile trail race from Bend to Sisters, Oregon, with 10,700 ft of gain. The event features 90% single-track trails and 13 full aid stations.
PACERS
All pacers must sign a waiver.
The Tushars Mountain Runs feature 100 Kilometer, 70 Kilometer, Marathon and Half Marathon distances.
One of the toughest, most spectacular mountain races in all of North America in a little known mountain range near Beaver, Utah. The Tushar Mountains are a hidden gem of high altitude peaks, mountain canyons, alpine lakes and stunning terrain. Come find out for yourself why this is a MUST DO race.
The Tushars Mountain Runs are staged out of Eagle Point Resort at an elevation of over 10,000 feet.
Crews are welcome at Big John Flat, this meadow is situated near Skyline Aid. Crews can park anywhere in this area as long as they are not blocking the road. 100K runners will run through this stretch twice times. Crews are also welcome at Bullion Pasture and Big Flat Aid Stations (not to be confused with Big John Flat).
Pacers for the 100K runners are allowed to join/leave their runners at Bullion Pasture (mile 37.9) and Big Flat (mile 54.5). Pacers DO NOT need a bib, but need to carry the same required gear. Pacers are welcome to all aid station fare.
The Mogollon Monster 100 is a rugged, challenging trail race taking place about 90 minutes northeast of Phoenix, Arizona just outside the small town of Pine, Arizona. The Mogollon Monster includes the advanced degree endurance race of 100 miles, with the addition of a 42 Kilometer race on Sunday.
You are allowed ONE (1) crew vehicle per runner. When you pick up your bib, you will be supplied with a crew pass with your bib number on it that must be present on the dash for the entire race.
The Mogollon Rim itself poses a large obstacle for crewing this race. We have learned over the years that it does not make sense or is actually close to impossible to drive between some aid stations in time to see a runner since you must drive all the way around the rim to go up or down it. While most are easily accessible, they often require a great deal of driving to get to each. We ask that you please abide by our crew locations so that we can all have a safe and enjoyable race experience.
The Stagecoach Ultra in Arizona is a 100-mile and 55k race on the Arizona Trail, traversing high desert and alpine terrain with singletrack, doubletrack, and forest roads.
Local Race Director, Kenny Ringled is proud to bring back Simi Valley's premiere trail race, formerly known as the Rocky Peak Ultra. Awesome races in beautiful places ~ Run through the picturesque mountains and steep canyons of Rocky Peak, a famous film industry location for movies and television productions including Star Wars. The race course features spectacular sandstone boulders, outcroppings, oak savannahs, and perennial water sources providing a diverse habitat for birds, mammals, and reptiles. This classic race has it all from stunning mountain and ocean views and challenging climbs...a trailrunners dream!! Choose from three distances on race day: 50k, 30k and 15k.
Enjoy 240 miles of beautiful terrain as you travel through desert, canyons, slick rock, and two mountain ranges — all while surrounded by Canyonlands and Arches National Park.
We encourage friends, family, and the running community to get involved in the run by pacing.
Pacers are for runner safety and company only, not for giving aid or to gain an advantage over another runner.
Pacing starts at the Indian Creek Aid Station. Pacers are only allowed to be picked up or dropped off at crew access aid stations.
100 Mile, 100K, 50K, 25K and 10(+) Mile Race
Join us for the Pumpkin Holler Hunnered race on October 18th & 19th. You will agree we have found a little slice of heaven in Cherokee County, nestled along the beautiful Illinois River.
Pacers will be allowed for all 100 mile and 100K runners AFTER the first 50K loop is completed.
Each runner may have as many pacers as they like, however only one pacer at a time can accompany the runner.