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UltraCosta RicaAlajuela Province

Pacific Nature Challenge 2026

28.11 – 30.11.2026Santa Teresa (Costa Rica)
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3 courses · 18.9–105.6 km11.8–65.6 mi · up to 1’951 m D+up to 6’401 ft D+

At a glance

Pacific Nature Challenge 2026 takes place from Saturday 28 to Monday 30 November 2026 in Santa Teresa (Alajuela Province, Costa Rica). Three distances to choose from: 18.9, 34.1 and 105.6 km.

Longest course: Pacific Nature Challenge - 100K, 105.6 km with 1’951 m D+ (18 m per km: runnable terrain).

On Kliva, plan your pacing and nutrition for free, then send the plan to your watch.

3 courses

  1. 18.9km11.8mi

    347 m D+1’138 ft D+

    avg 2%

    Pacific Nature Challenge - 18K

    30.11.

    UTMB Index 20K

  2. 34.1km21.2mi

    626 m D+2’054 ft D+

    avg 2%

    Pacific Nature Challenge - 34K

    29.11.

    UTMB Index 20K

  3. 105.6km65.6mi

    1’951 m D+6’401 ft D+

    avg 2%

    Pacific Nature Challenge - 100K
    UTMB Index 50K

GPX trace not yet published.

Race plan

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Pacing, aid stations and fueling timed to your effort on Pacific Nature Challenge , in one roadbook.

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Santa Teresa (Costa Rica)

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