Difficulty Index

Every race we cover, ranked by how hard it really is.

Our 0–10 difficulty score factors in elevation, hill placement, weather, altitude, turns and surface. See the methodology →

Jump to: 10 hardest · 10 easiest
All difficulties Easy (0–3) Moderate (3–5) Hard (5–7) Brutal (7+) Good for a PB
Cmp Marathon ▲▼ Country ▲▼ Date ▲▼ Elev ▲▼ Profile Difficulty ▲
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Elevation profiles, records, field size and more.
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Every marathon, by country
Full directory across every continent we cover.
How it works
The difficulty methodology
What goes into the 0–10 score, and why.
Marathon vs Marathon
Tokyo vs Boston: The Marathon That Picks You vs The Marathon You Earn
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