Free tool
Compare marathons
Side-by-side comparison of elevation, PB potential, beginner friendliness, terrain, weather, and entry details. Pick two races and see how they stack up.
Race A
vs
Race B
Race A
Rock 'n' Roll Running Series Las Vegas
Best for
Newer marathonersFlat-course PBs
Race B
Chevron Houston Marathon
Best for
Elite PB chasingNewer marathonersFlat-course PBs
Race A
Rock 'n' Roll Running Series Las Vegas
Las Vegas, USA
Race B
Chevron Houston Marathon
Houston, USA
Date
Nov 15, 2026
Expected January 2027
Month
Nov
Jan
Location
🇺🇸 Las Vegas, USA
🇺🇸 Houston, USA
Terrain
Road
Road
Elevation gain
75 m
▲
45 m
PB potential
▲
Beginner friendly
World Major
No
No
Entry type
Open
Open
Entry status
Open
Check official site
Season
Autumn · Americas
Winter · Americas
Race-day temp.
10–17°C
8–16°C
Conditions
Dry Nevada November night — excellent conditions
Cool winter morning, warming by finish
Humidity
20–35%
55–70%
Wind
5–15 km/h desert breeze
10–20 km/h southerly
Qualifies for
—
Boston Marathon
Want to know how these scores are calculated? See methodology →