Race guides / Flat and fast

The flattest marathons.

Marathons on courses we class as flat, ranked by how much they climb from start to finish. A course with under 100 m of total ascent leaves little between you and an even-paced run, which is why most personal bests are set on courses like these. The top 30 of 95 flat marathons in 14 countries, racing from 8 Nov 2026 to 17 Oct 2027. The flattest, NN Marathon Rotterdam, climbs 0 m in total.