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Best Boston Marathon Qualifiers for 2026

Best Boston Marathon Qualifiers

It's here! Our annual list of the year's
best marathons to help you qualify for the Boston Marathon.

2026 IS HERE!



Casper Marathon

Casper, WY
Sunday, June 7, 2026


  4.3 Stars from 3 Reviews

Course Description

The Casper Marathon offers a challenging high-altitude course. The route in run at an elevation between roughly 5,100 and 5,350 feet above sea level, altitude acclimation is a major factor in the overall difficulty for those not living or acclimated to altitude. The course is a combination of a loop and an out-and-back, featuring an elevation profile composed of rolling hills during the first half and primarily flat sections throughout the second half.

The entire course is run on paved terrain, with a surface breakdown of approximately 90% asphalt and 10% concrete. The race begins at the WYO Sports Ranch, which provides an indoor waiting space for runners before the start. From there, the course covers the rolling hills north of town, reaching its maximum elevation near 5,350 feet within the first few miles. Around miles 5 to 6, runners face a significant downhill drop as the layout descends into the city of Casper.

The remainder of the course transitions into flatter sections that weave through local historic sights and segments near a golf course. A significant portion of the later miles utilizes the Platte River Trails system. Along this river parkway, runners cross pedestrian bridges and follow the water, encountering a mix of occasional shaded relief, minor slopes, and fully exposed stretches. Because it is a smaller regional event, crowd support is generally quiet but highly supportive at key intersections.

A smart pacing strategy requires extreme patience during the rolling hills and high altitude of the opening miles. Runners who overextend themselves early often struggle with the thin air and sun exposure on the exposed river trail later on. While the second half is flat, the 5,000+ feet of elevation means this race is best suited for altitude-prepared runners, 50-state milestone chasers, and those who appreciate a scenic, community-oriented event along the river.






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Race Information

Race Dates

2027: TBD
2026: Sunday, June 7, 2026

Course Information

Profile: Mostly Flat
Type: Point to Point
Surface: Road/Pavement

Boston Qualifier?: Yes
World Marathon Major Qualifier?: No


Race Day Weather

Mean Temp.: 60°F (15°C)
Average High: 75°F (23°C)
Average Low: 44° F (6°C)





PR Score & Course Score

PR Score: 93.77
Course Score: 93.77


Race Size

2026: 89 Finishers
2025: 110 Finishers
2024: 93 Finishers
2023: 94 Finishers
2022: 76 Finishers
2021: 108 Finishers

BQ Percentages

2026: 2.3%
2025: 5.5%
2024: 8.6%
2023: 9.6%
2022: 4%
2021: 5.6%


Miscellaneous Information

Pace Groups?: No

Weather Averages for Last 6 Years


Race Day Temperatures

High: 81°F  (27°C)
Low: 54°F  (12°C)

Race Start Conditions

58°F  (14°C)
Humidity: 58%

Clear
S 7 mph

PR Score

93.22

Course Score

93.77









Casper Marathon Rankings, Course Speed & Boston Qualifier Statistics

The Casper Marathon was the 350th largest marathon in the U.S. in 2025 based on the number of finishers. In 2024, it ranked as the 365th largest marathon in the U.S..

In 2026, 2.3% of Casper Marathon finishers have achieved Boston Marathon qualifying times. In 2025, 5.5% of finishers qualified for the Boston Marathon.

Based on its percentage of Boston Qualifiers (BQs), the Casper Marathon ranked 262nd among marathons in the U.S. in 2025 and currently ranks 186th so far in 2026. In Wyoming, it ranked 1st in 2025 and 1st so far in 2026. These rankings provide a useful benchmark for comparing the Casper Marathon with other Boston Marathon qualifying races.


The Casper Marathon has a Course Score of 93.77, ranking it as the 442nd fastest marathon course in the U.S. and the 1st fastest marathon course in Wyoming.

Typical race-time temperature and humidity levels are within the ideal range for optimal marathon performance. Combined with the course profile, this gives the Casper Marathon a PR Score of 93.77. The PR Score ranks the Casper Marathon as the 434th best marathon in the U.S. for running a Personal Record (PR) and the 1st best marathon for a PR in Wyoming.

Together, these rankings provide a quick snapshot of how the Casper Marathon compares with other marathons in the U.S. and Wyoming for speed, PR potential, Boston Marathon qualifying success, and overall participation.

Casper Marathon Marathon Rankings Summary
Course Speed442nd fastest marathon course in the U.S.
Ranked 1st fastest marathon course in Wyoming
Top 96% Nationally#1 of 3 in Wyoming
PR Potential434th best marathon for a Personal Record in the U.S.
Ranked 1st best marathon for a PR in Wyoming
Top 94% Nationally#1 of 3 in Wyoming
Boston Qualifier Rate262nd highest BQ percentage in the U.S.
Ranked 1st highest BQ percentage in Wyoming
Based on 2025 Boston Marathon qualifying results
Top 55% Nationally#1 of 2 in Wyoming
Race Size350th largest marathon in the U.S.
Ranked 2nd largest marathon in Wyoming
Based on 2025 results
Top 59% Nationally#2 of 5 in Wyoming

Learn more about PR Scores and Course Scores on the FAQ page.




Elevation Chart


Max Elevation: 5351 feet (1631m)
Min Elevation: 5098 feet (1554m)

Elevation Gain: 548 feet (167m)
Elevation Loss: 743 feet (226m)


Casper

Course updated 05/28/2026





Hotel & VRBO Accommodations for the Casper Marathon

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Compare the Casper Marathon to other Marathons

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Do you want to see how the Casper Marathon stacks up against other marathons?

Compare the details of the Casper Marathon side-by-side with other marathons with our Comparison Tool.


If you ran the Casper Marathon in 4:57:00, what would your time in other marathons be?

See how your finish time would compare on other marathon courses with our Time Conversion Tool.




Race Reviews


4.3
Based on 3 reviews
Write Your Own Review

Small-Town Jewel!

Full Review:

From start to finish, it's clear that the race operators love a festive atmosphere! Packet pickup was held at a local brewery, and 21+ types get a free beer THERE in addition to beers at the post-race party. The party is well-stocked with excellent food, and there's live music!

The swag is excellent. A shuttle is offered from the finish area to the start, though distance between the two is minimal (though up a big ol' hill).

The race begins at the Wyoming Center, which is indoors, so you have that going for you, which is nice.

The RD and the people who volunteered were affable and great company.

Race Tips:

You are running at altitude, so be mindful, and prepare yourself in advance if you're a sea-level kid like me.

The course is definitely "rolling" and heading into "hilly" territory; it's the mountains.

The course is marked tolerably well, but it's still possible to take a wrong turn if you're not careful; I saw a half-marathoner hit the marathon course by accident, and she didn't realize it for a while. Watch the ground, and if you see "NO" spray-painted, don't run there. Follow the arrows.

Travel/Logistics Tips:

The Ramkota Hotel is within easy walking distance of the race's finish, as are several other hotels.

Casper is easy to reach via Denver (whether you drive or fly) and compares favorably to other marathons in the state in terms of price.

Missed the mark

Full Review:

I chose this race because the of date. It allowed me to complete Wyoming and Montana (following weekend at Governor's Cup) in a single trip, while vacationing in Jackson Hole and Yellowstone in between. There aren't really a whole lot of options in Wyoming anyways.

The race director and course were new for this year and they did seem to be short on volunteers per a Facebook post. The expo, pre and post race were all great. You get to stay inside before the race with real bathrooms and easy gear check. The post race had a nice spread and free massages.

The only real flaw was on the most important aspect of a marathon, the course. It was not marked, at all. I was in the lead group through the first half and we had no clue what we doing. There was no lead vehicle, arrows or signs. We made wrong turns multiple times and even the volunteers didn't seem clear. The wrong turn that just about everyone made was when looping back around the golf course (side note: that was a horrible course decision. The first loop was fine as it was the first 3 miles and the only runners come upon are the half walkers who started 15min later). I initially went the correct way, but was overruled by the rest of the group when an aid station was spotted on the other side of the street. It should have been before the turn so we could hit it on both passes. Later sections of the trail you were just guessing. It wasn't until the way back that I started seeing arrows in spray paint and duct tape.

Race Tips:

Study the route. Not a difficult course with just a couple small hills at the turnaround and on mile 8 or 9 and a massive downhill coming into town on mile 6.

Full Review:

This was one of the better marathons that I have completed. There are many pros to this race. There are at least five hotels within walking distance of the start/finish area and all were reasonably priced. A shuttle was available to the start if desired, but most people won't need it. It is a smaller race (only 120 finishers this year) with a home town feel to it. An indoor waiting area at the start meant that runners could stay warm and dry in the event of cold/inclement weather. There were also REAL indoor bathrooms at the start, and plenty of them. No waiting in lines at porta potties here. It was a scenic course. No skyscrapers, only wide open prairies, mountains in the distance, trees, the river and some wildlife. You can expect sunny weather as this is typical for Casper this time of year. Every aid station had water, Gatorade, GU, oranges slices and watermelon. Aid stations were available every 1.5 to 2 miles. The post race finish area also had these same amenities, with the addition of chocolate milk, blueberries, blackberries, raspberries, strawberries, grapes, apple slices and pineapple at the finish. There were also Pizza Hut pizza and Subway sandwiches, soda and beer. Free beer. Plenty of shade at the finish area, too. There are a couple of drawbacks to the race, too. First, the weather. Yes, I know I listed the weather as a pro, but being sunny meant it warmed up quickly and there is not a lot of shade on the course. Hats and sunglasses are recommended. Miles 6-9 or so are on a curvy section of the bike trail. Be sure to "run the curves" so as not to add any extra distance to your race. The altitude can be an obstacle if you are not used to it. Being a smaller race meant there were not a lot of spectators/supporters on the course, either. Overall, I thought it was a very good marathon. For 50-staters, this should be your Wyoming race!