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SHAMROCK MARATHON 2026

Amy Molloy

Chelmsford, MA

Bib: 103 F 46

0:00
0:00
/ mi
Masters
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Overall
#0 / 2429
Top 15%
Gender (Female)
#0 / 943
Top 7%
Masters (Masters Women)
#0 / 286
Top 3%
Division (F45-49)
#0 / 86
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
7:49/mi
24:16
↑ 26↓ 31
1 ft elev
10K· 6.21 mi
7:45/mi
48:21
↑ 38↓ 170.1%
22 ft elev
15K· 9.32 mi
7:55/mi
1:12:57
↑ 26↓ 440.1%
5 ft elev
20K· 12.43 mi
7:59/mi
1:37:46
↑ 35↓ 22
17 ft elev
Half· 13.10 mi
8:04/mi
1:43:11
↓ 130.2%
11 ft elev
30K· 18.64 mi
8:03/mi
2:27:50
↑ 86↓ 72
25 ft elev
35K· 21.75 mi
9:23/mi
2:57:00
↑ 39↓ 39
25 ft elev
25.2M
9:19/mi
3:29:09
↑ 57↓ 58
24 ft elev
Finish· 26.22 mi
9:05/mi
3:38:24
↑ 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
1:43:117:53 /mi⚡ faster
2nd Half
1:55:138:47 /mi+11.7%
Positive split — 11.7% 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
24:167:493.11 mi24:16
7:49
-
10K
48:217:473.10 mi24:05
7:45
-0:04
15K
1:12:577:503.11 mi24:36
7:55
+0:10
20K
1:37:467:523.11 mi24:49
7:59
+0:04
Half(13.10 mi)
1:43:117:530.67 mi5:25
8:04
+0:05
30K
2:27:507:565.54 mi44:39
8:03
-0:01
35K
2:57:008:083.11 mi29:10
9:23
+1:20
25.2M
3:29:098:183.45 mi32:09
9:19
-0:04
Finish(26.22 mi)
3:38:248:201.02 mi9:15
9:05
-0:14
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:45 /mi

Average Pace

8:20 /mi

Slowest Pace

9:23 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:27:50

68% of race

Time at Slower Pace

1:10:34

32% of race

Average Pace: 8:20 /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

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi395521446752
10K6.21 mi3.10 mi383+1251+11387541
15K9.32 mi3.11 mi402-1957-61446752
20K12.43 mi3.11 mi404-261-42-1461712
Half13.10 mi0.67 mi403+1612461732
30K18.64 mi5.54 mi401+263-21+1401684
35K21.75 mi3.11 mi385+1662+11400796
25.2M25.20 mi3.45 mi360+2561+114381155
Finish26.22 mi1.02 mi367-765-416341828

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×1story
+26ft-31ft

Overall

446

Females

75

F45-49

4

5K→10K

3.1 - 6.2 mi

Top 16%
×2story building
+38ft-17ft

Overall

387

Females

54

F45-49

2

10K→15K

6.2 - 9.3 mi

Top 18%
×2story building
+26ft-44ft

Overall

446

Females

75

F45-49

4

15K→20K

9.3 - 12.4 mi

Top 19%
×1story
+35ft-22ft

Overall

461

Females

71

F45-49

3

20K→Half

12.4 - 13.1 mi

Top 19%
×1human
+7ft-13ft

Overall

461

Females

73

F45-49

3

Half→30K

13.1 - 18.6 mi

Top 17%
×2story building
+86ft-72ft

Overall

401

Females

68

F45-49

6

30K→35K

18.6 - 21.8 mi

Top 16%
×2stacked humans
+39ft-39ft

Overall

400

Females

79

F45-49

8

35K→25.2M

21.8 - 25.2 mi

Top 18%
×3story building
+57ft-58ft

Overall

438

Females

115

F45-49

6

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×1human
+17ft-12ft

Overall

634

Females

182

F45-49

9

Passing Analysis

Category:
Athletes Passed
137*
Passed By
109
Net Change
+28
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#395
5K → 10K186+12#395#383
10K → 15K221-19#383#402
15K → 20K7*9-2#402#404
20K → Half7*6+1#404#403
Half → 30K42*40+2#403#401
30K → 35K24*8+16#401#385
35K → 25.2M34*9+25#385#360
25.2M → Finish3*10-7#360#367
TOTALS137*109+28

* 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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