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SHAMROCK MARATHON 2025

Britt Singletary

Bib: 1946•F•Age: 37

Tucson, AZ

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0:00
0:00
/ mi
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Overall
#0 / 1949
Gender (Female)
#0 / 791
Age Group (F35-39)
Official
#0 / 111
Calculated (F35-39)
#0 / 111
Race Day Weather
71°/61°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
32:02
Rank: #1300
Start → 5K
32:02 | 10:19/mi
10K· 6.21 mi
1:05:45
Rank: #1388 (-88)
5K → 10K
33:43 | 10:52/mi
15K· 9.32 mi
1:39:40
Rank: #1408 (-20)
10K → 15K
33:55 | 10:56/mi
20K· 12.43 mi
2:15:27
Rank: #1447 (-39)
15K → 20K
35:47 | 11:32/mi
Half· 13.10 mi
2:24:00
Rank: #1451 (-4)
20K → Half
8:33 | 12:45/mi
25K· 15.53 mi
2:55:34
Rank: #1500 (-49)
Half → 25K
31:34 | 12:58/mi
30K· 18.64 mi
3:37:13
Rank: #1603 (-103)
25K → 30K
41:39 | 13:25/mi
35K· 21.75 mi
4:34:49
Rank: #1681 (-78)
30K → 35K
57:36 | 18:33/mi
25.2M
5:33:39
Rank: #1735 (-54)
35K → 25.2M
58:50 | 17:03/mi
Finish· 26.22 mi
5:50:13
Rank: #1750 (-15)
25.2M → Finish
16:34 | 16:16/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:24:00
Pace11:00 /mi
2nd Half
Distance13.12 mi
Time3:26:13
Pace15:44 /mi
📊Positive Split: 43.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:14:1632:0210:1932:02
10:19
-
10K
6.21 mi08:47:591:05:4510:3533:43
10:52
+0:33
15K
9.32 mi09:21:541:39:4010:4233:55
10:56
+0:04
20K
12.43 mi09:57:412:15:2710:5435:47
11:32
+0:36
Half
13.10 mi10:06:142:24:0011:008:33
12:45
+1:13
25K
15.53 mi10:37:482:55:3411:1931:34
12:58
+0:13
30K
18.64 mi11:19:273:37:1311:4041:39
13:25
+0:27
35K
21.75 mi12:17:034:34:4912:3957:36
18:33
+5:08
25.2M
25.20 mi13:15:535:33:3913:1558:50
17:03
-1:30
Finish
26.22 mi13:32:275:50:1313:2316:34
16:16
-0:47

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

10:19 /mi

Average Pace

13:22 /mi

Slowest Pace

18:33 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:15:27

39% of race

Time at Steady Pace

1:21:46

23% of race

Time at Slower Pace

2:13:00

38% of race

Average Pace: 13:21 /mi

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

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi08:14:1632:0210:1932:02
10:19
#1300
10K
6.21 mi08:47:591:05:4510:3533:43
10:52
#1388
15K
9.32 mi09:21:541:39:4010:4233:55
10:56
#1408
20K
12.43 mi09:57:412:15:2710:5435:47
11:32
#1447
Half
13.10 mi10:06:142:24:0011:008:33
12:45
#1451
25K
15.53 mi10:37:482:55:3411:1931:34
12:58
#1500
30K
18.64 mi11:19:273:37:1311:4041:39
13:25
#1603
35K
21.75 mi12:17:034:34:4912:3957:36
18:33
#1681
25.2M
25.20 mi13:15:535:33:3913:1558:50
17:03
#1735
Finish
26.22 mi13:32:275:50:1313:2316:34
16:16
#1750
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
5K3.11 mi3.11 mi1300433601452(Top 74%)511(Top 65%)72(Top 65%)
10K6.21 mi3.10 mi1388-88481-4866-61444(Top 74%)506(Top 64%)69(Top 62%)
15K9.32 mi3.11 mi1408-20488-769-31452(Top 74%)511(Top 65%)72(Top 65%)
20K12.43 mi3.11 mi1447-39510-2270-11573(Top 81%)572(Top 72%)78(Top 70%)
Half13.10 mi0.67 mi1451-4517-771-11633(Top 84%)615(Top 78%)86(Top 77%)
25K15.53 mi2.43 mi1500-49536-19711630(Top 84%)624(Top 79%)83(Top 75%)
30K18.64 mi3.11 mi1603-103594-5879-81804(Top 93%)714(Top 90%)98(Top 88%)
35K21.75 mi3.11 mi1681-78636-4288-91865(Top 96%)753(Top 95%)105(Top 95%)
25.2M25.20 mi3.45 mi1735-54671-3596-81897(Top 97%)770(Top 97%)108(Top 97%)
Finish26.22 mi1.02 mi1750-15683-12961914(Top 98%)781(Top 99%)110(Top 99%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×1story
+26ft-31ft

Overall

1452

Females

511

F35-39

72

5K→10K

3.1 - 6.2 mi

Top 74%
×2stories
+38ft-17ft

Overall

1444

Females

506

F35-39

69

10K→15K

6.2 - 9.3 mi

Top 74%
×2stories
+26ft-44ft

Overall

1452

Females

511

F35-39

72

15K→20K

9.3 - 12.4 mi

Top 81%
×1story
+35ft-22ft

Overall

1573

Females

572

F35-39

78

20K→Half

12.4 - 13.1 mi

Top 84%
×1human
+7ft-13ft

Overall

1633

Females

615

F35-39

86

Half→25K

13.1 - 15.5 mi

Top 84%
×2stories
+48ft-19ft

Overall

1630

Females

624

F35-39

83

25K→30K

15.5 - 18.6 mi

Top 93%
×2stories
+38ft-52ft

Overall

1804

Females

714

F35-39

98

30K→35K

18.6 - 21.8 mi

Top 96%
×2humans
+39ft-39ft

Overall

1865

Females

753

F35-39

105

35K→25.2M

21.8 - 25.2 mi

Top 97%
×3stories
+57ft-58ft

Overall

1897

Females

770

F35-39

108

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×1human
+17ft-12ft

Overall

1914

Females

781

F35-39

110

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
61
Passed By
511
Net Change
-450
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1300
5K → 10K15103-88#1300#1388
10K → 15K1535-20#1388#1408
15K → 20K645-39#1408#1447
20K → Half913-4#1447#1451
Half → 25K1160-49#1451#1500
25K → 30K1104-103#1500#1603
30K → 35K280-78#1603#1681
35K → 25.2M256-54#1681#1735
25.2M → Finish015-15#1735#1750
TOTALS61511-450
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

BQ

Boston Qualifying analysis available

Finisher Certificate

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🏆 Finisher Certificate
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Activity Data

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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management