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SHAMROCK MARATHON 2026

Rebecca Zoss

Andover, MA

Bib: 123 F 42

0:00
0:00
/ mi
Masters
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Overall
#0 / 2429
Top 13%
Gender (Female)
#0 / 943
Top 5%
Masters (Masters Women)
#0 / 286
Top 2%
Division (F40-44)
#0 / 91
Top 1%
Race Day Weather
55°/45°F
few clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
7 ft elev
5K· 3.11 mi
7:57/mi
24:42
↑ 26↓ 31
1 ft elev
10K· 6.21 mi
7:37/mi
48:23
↑ 38↓ 170.1%
22 ft elev
15K· 9.32 mi
7:41/mi
1:12:14
↑ 26↓ 440.1%
5 ft elev
20K· 12.43 mi
7:52/mi
1:36:39
↑ 35↓ 22
17 ft elev
Half· 13.10 mi
7:45/mi
1:41:51
↓ 130.2%
11 ft elev
30K· 18.64 mi
7:57/mi
2:25:53
↑ 86↓ 72
25 ft elev
35K· 21.75 mi
9:10/mi
2:54:23
↑ 39↓ 39
25 ft elev
25.2M
8:52/mi
3:25:00
↑ 57↓ 58
24 ft elev
Finish· 26.22 mi
8:09/mi
3:33:18
↑ 17↓ 12
28 ft elev
Course Elevation
-8–55 ft
≈
×5story building
•▲ 331 ft climb · ▼ 310 ft descent

The Course

Half Splits

1st Half· via Half
1:41:517:47 /mi⚡ faster
2nd Half
1:51:278:30 /mi+9.4%
Positive split — 9.4% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
24:427:573.11 mi24:42
7:57
-
10K
48:237:473.10 mi23:41
7:37
-0:20
15K
1:12:147:453.11 mi23:51
7:41
+0:04
20K
1:36:397:473.11 mi24:25
7:52
+0:11
Half(13.10 mi)
1:41:517:470.67 mi5:12
7:45
-0:07
30K
2:25:537:505.54 mi44:02
7:57
+0:12
35K
2:54:238:013.11 mi28:30
9:10
+1:13
25.2M
3:25:008:083.45 mi30:37
8:52
-0:18
Finish(26.22 mi)
3:33:188:081.02 mi8:18
8:09
-0:43
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:37 /mi

Average Pace

8:08 /mi

Slowest Pace

9:10 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

47:32

22% of race

Time at Steady Pace

1:46:39

50% of race

Time at Slower Pace

59:07

28% of race

Average Pace: 8:08 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi457725352421
10K3.10 mi384+7352+201+4346421
15K3.11 mi377+750+21352421
20K3.11 mi370+749+11381532
Half(13.10 mi)0.67 mi359+1148+11326391
30K5.54 mi341+1845+31366572
35K3.11 mi338+350-51352641
25.2M3.45 mi313+2549+11324741
Finish(26.22 mi)1.02 mi311+248+11308751

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×1story
+26ft-31ft

Overall

352

Females

42

F40-44

2

5K→10K

3.1 - 6.2 mi

Top 14%
×2story building
+38ft-17ft

Overall

346

Females

42

F40-44

3

10K→15K

6.2 - 9.3 mi

Top 14%
×2story building
+26ft-44ft

Overall

352

Females

42

F40-44

2

15K→20K

9.3 - 12.4 mi

Top 16%
×1story
+35ft-22ft

Overall

381

Females

53

F40-44

3

20K→Half

12.4 - 13.1 mi

Top 13%
×1human
+7ft-13ft

Overall

326

Females

39

F40-44

3

Half→30K

13.1 - 18.6 mi

Top 15%
×2story building
+86ft-72ft

Overall

366

Females

57

F40-44

4

30K→35K

18.6 - 21.8 mi

Top 14%
×2stacked humans
+39ft-39ft

Overall

352

Females

64

F40-44

3

35K→25.2M

21.8 - 25.2 mi

Top 13%
×3story building
+57ft-58ft

Overall

324

Females

74

F40-44

3

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×1human
+17ft-12ft

Overall

308

Females

75

F40-44

3

Passing Analysis

Category:
Passed
197*
Passed By
51
Net Change
+146
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#457
5K → 10K741+73#457#384
10K → 15K81+7#384#377
15K → 20K11*4+7#377#370
20K → Half11*0+11#370#359
Half → 30K33*15+18#359#341
30K → 35K21*18+3#341#338
35K → 25.2M35*10+25#338#313
25.2M → Finish4*2+2#313#311
TOTALS197*51+146

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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