NUTS Karhunkierros - 166 km

NUTS Karhunkierros 166 Finish Time Predictor

NUTS Karhunkierros 166 race stats pre-loaded (167.6 km, 3,752 m D+). Enter a known race result to get an elevation-adjusted finish time estimate.

167.6km3,752m D+Winner: ~17h09Cutoff: 36h

Full NUTS Karhunkierros - 166 km course data: aid stations, cutoffs, course profile

1. Your race

NUTS Karhunkierros 166

167.6 km · 3752 m D+ · 3752 m D-

Different race?

Have the GPX? Measure the exact course in the GPX Explorer

2. How should we estimate you?

From my Strava historyYour last 90 days of real training. Opens the TrailMath app.Read-only access to your activities. Nothing is posted to Strava, and no training plan is created until you ask for one.

Distance (km)

Elevation gain (m)

Elevation loss (m)

Same as gain. Edit if different.

Finish time

Hours, or h:mm

3. Your predicted finish

205.1 km-effort (ITRA, gain only)223.9 km-effort

Add a past race or your index to get a finish time.

NUTS Karhunkierros 166 finish times by UTMB Index

Predicted finish on the NUTS Karhunkierros 166 course (167.6 km, 3,752 m D+) for each UTMB Index, with the margin to the 36h00 cutoff.

NUTS Karhunkierros 166: predicted finish time by UTMB Index
UTMB Index	Predicted finish	Average pace	Margin to cutoff
850	14h06	5:03 /km	+21h54
800	15h25	5:31 /km	+20h35
750	16h51	6:02 /km	+19h09
700competitive	18h25	6:36 /km	+17h35
650	20h08	7:13 /km	+15h52
600	22h01	7:53 /km	+13h59
550	24h04	8:37 /km	+11h56
500mid-pack	26h18	9:25 /km	+9h42
450	28h45	10:18 /km	+7h15
400back of the pack	31h26	11:15 /km	+4h34
350	34h21	12:18 /km	+1h39
300	37h33	13:27 /km	1h33 past the cutoff

The 36h00 cutoff sits at about Index 324. The typical winning time, 17h09, sits at about Index 740. At the 2026 edition, the median of the 172 finishers took 31h53, about Index 392. A model estimate, not an official ITRA or UTMB figure.

From a result you already have

What the predictor gives on NUTS Karhunkierros 166 for a few common reference results.

NUTS Karhunkierros 166: predicted finish from reference results
Road marathon	3h00 → 23h09	3h30 → 27h01	4h00 → 30h52	4h30 → 34h44
50 km trail, 2,000 m D+	5h30 → 19h24	6h30 → 22h56	7h30 → 26h27	8h30 → 29h57

Road marathons use the tool's rougher power-law fallback.

To prepare each checkpoint, use the NUTS Karhunkierros 166 aid station planner.

NUTS Karhunkierros 166 course in numbers

Climbing per km: 22 m
ITRA km-effort: 205 (100M)
Highest point: 492 m
Biggest climb: +296 m over 11.0 km at 1.6% (through Basecamp (return))
Steepest climb: +209 m over 8.4 km at 1.7%
Longest descent: -251 m over 18.6 km at 0.4% (down to Savilampi (return))
Track climbing above 3%: 22%
Winning time / cutoff: 17h09 / 36h00 (2.1x the winner's time)

Section-by-section climbs, descents and grades are on the NUTS Karhunkierros 166 course page.

Predict your NUTS Karhunkierros 166 finish time from a reference race result, adjusted for the course's 167.6 km and roughly 3,752 m of elevation gain. The overall cutoff is 36h.

About NUTS Karhunkierros - 166 km

NUTS Karhunkierros - 166 km covers 167.6 km with around 3,752 m of elevation gain, starting in Ruka, Kuusamo, Finland. The overall cutoff is 36 hours.

Checkpoint data approximate - verify against the current official race guide at nutskarhunkierros.fi before your race.

How the prediction works

Your result becomes a UTMB Index, mapped onto NUTS Karhunkierros 166 by the calibrated model behind the ITRA / UTMB Index Estimator. Full methodology.

Build a training plan targeted at your NUTS Karhunkierros 166 goal time

TrailMath uses these models to build periodized plans adjusted to your goals and terrain.

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