100K spring ultra marathons

Mar 5, 2026 (Thu)

, Rivas, Nicaragua

1.9 - 2.6

Mar 7, 2026 (Sat)

, Occitanie, France

1.6 - 2.2

Mar 7, 2026 (Sat)

, Texas, United States

1.1 - 1.9

Mar 7-8, 2026 (Sat-Sun)

, Distrito Nacional, Dominican Republic

Mar 8, 2026 (Sun)

, Piedmont, Italy

Mar 14, 2026 (Sat)

, Alabama, United States

2.1 - 2.6

$140 - $250

Mar 15, 2026 (Sun)

, Utah, United States

Mar 20-21, 2026 (Fri-Sat)

, Extremadura, Spain

Mar 21-22, 2026 (Sat-Sun)

, North Carolina, United States

Mar 27-28, 2026 (Fri-Sat)

, Washington, United States

1.4 - 2.5

Mar 27-29, 2026 (Fri-Sun)

, Victoria, Australia

Mar 28-Apr 1, 2026 (Sat-Wed)

, North West, United Kingdom

1.3 - 3.3

£85 - £899

Apr 4, 2026 (Sat)

, Connecticut, United States

2.8

Apr 10-12, 2026 (Fri-Sun)

, Colorado, United States

1.1 - 2.1

Apr 10-11, 2026 (Fri-Sat)

, Utah, United States

Apr 10-12, 2026 (Fri-Sun)

, Missouri, United States

1.2 - 2.7

$110 - $300

Apr 10-12, 2026 (Fri-Sun)

, Andalusia, Spain

1.7 - 2.3

Apr 11, 2026 (Sat)

, Virginia, United States

1 - 2

$90 - $120

Apr 11, 2026 (Sat)

, Wisconsin, United States

0.9 - 1.7

Apr 11-12, 2026 (Sat-Sun)

, Alabama, United States

2.1 - 2.6

$95 - $285

Apr 11, 2026 (Sat)

, Utah, United States

1.5 - 2.5

Apr 11, 2026 (Sat)

, Himachal Pradesh, India

1.6 - 2.4

Apr 14-19, 2026 (Tue-Sun)

, Georgia, United States

1.5 - 3.9

$119 - $479

Apr 18, 2026 (Sat)

, North Carolina, United States

Apr 18, 2026 (Sat)

, Tennessee, United States

$90 - $185