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SHAMROCK MARATHON 2025

Natalie Chung

Bib: 2757•F•Age: 25

ROCHESTER, NY

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0:00
0:00
/ mi
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Overall
#0 / 1949
Gender (Female)
#0 / 791
Top 50%
Age Group (F25-29)
Official
#0 / 180
Calculated (F25-29)
#0 / 180
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
34:17
3.11 mi
Rank: #1554
Start → 5K
34:17 | 11:03/mi
10K
1:08:06
6.21 mi
Rank: #1491 (+63)
5K → 10K
33:49 | 10:54/mi
15K
1:41:24
9.32 mi
Rank: #1447 (+44)
10K → 15K
33:18 | 10:44/mi
20K
2:13:58
12.43 mi
Rank: #1416 (+31)
15K → 20K
32:34 | 10:29/mi
Half
2:21:19
13.10 mi
Rank: #1390 (+26)
20K → Half
7:21 | 10:58/mi
25K
2:47:03
15.53 mi
Rank: #1335 (+55)
Half → 25K
25:44 | 10:34/mi
30K
3:16:19
18.64 mi
Rank: #1299 (+36)
25K → 30K
29:16 | 9:26/mi
35K
3:53:19
21.75 mi
Rank: #1212 (+87)
30K → 35K
37:00 | 11:55/mi
25.2M
4:30:50
25.20 mi
Rank: #1160 (+52)
35K → 25.2M
37:31 | 10:53/mi
Finish
4:40:30
26.22 mi
Rank: #1145 (+15)
25.2M → Finish
9:40 | 9:30/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via Half
Distance13.10 mi
Time2:21:19
Pace10:48 /mi
2nd Half✓ Faster
Distance13.12 mi
Time2:19:11
Pace10:37 /mi
📊Negative Split: 1.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:14:2834:1711:0334:17
11:03
-
10K
6.21 mi08:48:171:08:0610:5833:49
10:54
-0:09
15K
9.32 mi09:21:351:41:2410:5333:18
10:44
-0:10
20K
12.43 mi09:54:092:13:5810:4732:34
10:29
-0:15
Half
13.10 mi10:01:302:21:1910:487:21
10:58
+0:29
25K
15.53 mi10:27:142:47:0310:4625:44
10:34
-0:24
30K
18.64 mi10:56:303:16:1910:3229:16
9:26
-1:08
35K
21.75 mi11:33:303:53:1910:4437:00
11:55
+2:29
25.2M
25.20 mi12:11:014:30:5010:4537:31
10:53
-1:02
Finish
26.22 mi12:20:414:40:3010:439:40
9:30
-1:23

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

9:26 /mi

Average Pace

10:42 /mi

Slowest Pace

11:55 /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

1:11:30

25% of race

Time at Steady Pace

2:52:00

61% of race

Time at Slower Pace

37:00

13% of race

Average Pace: 10:42 /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 mi08:14:2834:1711:0334:17
11:03
#1554
10K
6.21 mi08:48:171:08:0610:5833:49
10:54
#1491
15K
9.32 mi09:21:351:41:2410:5333:18
10:44
#1447
20K
12.43 mi09:54:092:13:5810:4732:34
10:29
#1416
Half
13.10 mi10:01:302:21:1910:487:21
10:58
#1390
25K
15.53 mi10:27:142:47:0310:4625:44
10:34
#1335
30K
18.64 mi10:56:303:16:1910:3229:16
9:26
#1299
35K
21.75 mi11:33:303:53:1910:4437:00
11:55
#1212
25.2M
25.20 mi12:11:014:30:5010:4537:31
10:53
#1160
Finish
26.22 mi12:20:414:40:3010:439:40
9:30
#1145
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF25-29Seg. OverallSeg. FemalesSeg. F25-29
5K3.11 mi3.11 mi15545681401393(Top 71%)478(Top 60%)130(Top 72%)
10K6.21 mi3.10 mi1491+63531+37135+51452(Top 74%)508(Top 64%)134(Top 74%)
15K9.32 mi3.11 mi1447+44512+19134+11393(Top 71%)478(Top 60%)130(Top 72%)
20K12.43 mi3.11 mi1416+31495+17129+51293(Top 66%)439(Top 55%)115(Top 64%)
Half13.10 mi0.67 mi1390+26483+12127+21180(Top 61%)386(Top 49%)102(Top 57%)
25K15.53 mi2.43 mi1335+55459+24119+81103(Top 57%)355(Top 45%)97(Top 54%)
30K18.64 mi3.11 mi1299+36448+11116+31072(Top 55%)367(Top 46%)99(Top 55%)
35K21.75 mi3.11 mi1212+87412+36107+9886(Top 45%)308(Top 39%)82(Top 46%)
25.2M25.20 mi3.45 mi1160+52398+14105+2865(Top 44%)324(Top 41%)87(Top 48%)
Finish26.22 mi1.02 mi1145+15393+5102+3769(Top 39%)276(Top 35%)78(Top 43%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×1
+26ft-31ft

Overall

1393

Females

478

F25-29

130

5K→10K

3.1 - 6.2 mi

Top 74%
×2
+38ft-17ft

Overall

1452

Females

508

F25-29

134

10K→15K

6.2 - 9.3 mi

Top 71%
×2
+26ft-44ft

Overall

1393

Females

478

F25-29

130

15K→20K

9.3 - 12.4 mi

Top 66%
×1
+35ft-22ft

Overall

1293

Females

439

F25-29

115

20K→Half

12.4 - 13.1 mi

Top 61%
×1
+7ft-13ft

Overall

1180

Females

386

F25-29

102

Half→25K

13.1 - 15.5 mi

Top 57%
×2
+48ft-19ft

Overall

1103

Females

355

F25-29

97

25K→30K

15.5 - 18.6 mi

Top 55%
×2
+38ft-52ft

Overall

1072

Females

367

F25-29

99

30K→35K

18.6 - 21.8 mi

Top 45%
×2
+39ft-39ft

Overall

886

Females

308

F25-29

82

35K→25.2M

21.8 - 25.2 mi

Top 44%
×3
+57ft-58ft

Overall

865

Females

324

F25-29

87

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×1
+17ft-12ft

Overall

769

Females

276

F25-29

78

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
453
Passed By
44
Net Change
+409
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1554
5K → 10K8219+63#1554#1491
10K → 15K462+44#1491#1447
15K → 20K4110+31#1447#1416
20K → Half260+26#1416#1390
Half → 25K627+55#1390#1335
25K → 30K371+36#1335#1299
30K → 35K903+87#1299#1212
35K → 25.2M542+52#1212#1160
25.2M → Finish150+15#1160#1145
TOTALS45344+409
📊

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

Download and share your official race completion certificate

🏆 Finisher Certificate
Download or share your official race finisher certificate
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Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management