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SHAMROCK MARATHON 2025

Beth Costello

Bib: 1681•F•Age: 42

Oakton, VA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 1949
Gender (Female)
#0 / 791
Top 43%
Masters (Masters Women)
#0 / 277
Top 32%
Age Group (F40-44)
Official
#0 / 100
Calculated (F40-44)
#0 / 100
Top 37%
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
27:52
3.11 mi
Rank: #757
Start → 5K
27:52 | 8:59/mi
10K
56:10
6.21 mi
Rank: #793 (-36)
5K → 10K
28:18 | 9:07/mi
15K
1:25:27
9.32 mi
Rank: #862 (-69)
10K → 15K
29:17 | 9:26/mi
20K
1:55:01
12.43 mi
Rank: #886 (-24)
15K → 20K
29:34 | 9:31/mi
Half
2:02:19
13.10 mi
Rank: #901 (-15)
20K → Half
7:18 | 10:53/mi
25K
2:28:26
15.53 mi
Rank: #945 (-44)
Half → 25K
26:07 | 10:44/mi
30K
2:58:04
18.64 mi
Rank: #954 (-9)
25K → 30K
29:38 | 9:33/mi
35K
3:36:23
21.75 mi
Rank: #959 (-5)
30K → 35K
38:19 | 12:20/mi
25.2M
4:17:23
25.20 mi
Rank: #982 (-23)
35K → 25.2M
41:00 | 11:53/mi
Finish
4:29:03
26.22 mi
Rank: #1007 (-25)
25.2M → Finish
11:40 | 11:27/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:02:19
Pace9:21 /mi
2nd Half
Distance13.12 mi
Time2:26:44
Pace11:12 /mi
📊Positive Split: 20.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:04:3227:528:5927:52
8:59
-
10K
6.21 mi08:32:5056:109:0328:18
9:07
+0:08
15K
9.32 mi09:02:071:25:279:1129:17
9:26
+0:19
20K
12.43 mi09:31:411:55:019:1629:34
9:31
+0:05
Half
13.10 mi09:38:592:02:199:217:18
10:53
+1:22
25K
15.53 mi10:05:062:28:269:3426:07
10:44
-0:09
30K
18.64 mi10:34:442:58:049:3429:38
9:33
-1:11
35K
21.75 mi11:13:033:36:239:5738:19
12:20
+2:47
25.2M
25.20 mi11:54:034:17:2310:1341:00
11:53
-0:27
Finish
26.22 mi12:05:434:29:0310:1711:40
11:27
-0:26

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

8:59 /mi

Average Pace

10:16 /mi

Slowest Pace

12:20 /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

2:24:39

54% of race

Time at Steady Pace

33:25

12% of race

Time at Slower Pace

1:30:59

34% of race

Average Pace: 10:16 /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 mi08:04:3227:528:5927:52
8:59
#757
10K
6.21 mi08:32:5056:109:0328:18
9:07
#793
15K
9.32 mi09:02:071:25:279:1129:17
9:26
#862
20K
12.43 mi09:31:411:55:019:1629:34
9:31
#886
Half
13.10 mi09:38:592:02:199:217:18
10:53
#901
25K
15.53 mi10:05:062:28:269:3426:07
10:44
#945
30K
18.64 mi10:34:442:58:049:3429:38
9:33
#954
35K
21.75 mi11:13:033:36:239:5738:19
12:20
#959
25.2M
25.20 mi11:54:034:17:2310:1341:00
11:53
#982
Finish
26.22 mi12:05:434:29:0310:1711:40
11:27
#1007
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi75721522949(Top 49%)277(Top 35%)28(Top 28%)
10K6.21 mi3.10 mi793-36225-1023-1828(Top 42%)243(Top 31%)25(Top 25%)
15K9.32 mi3.11 mi862-69248-2324-1949(Top 49%)277(Top 35%)28(Top 28%)
20K12.43 mi3.11 mi886-24259-1126-2955(Top 49%)287(Top 36%)30(Top 30%)
Half13.10 mi0.67 mi901-15262-3261165(Top 60%)379(Top 48%)38(Top 38%)
25K15.53 mi2.43 mi945-44278-1628-21151(Top 59%)379(Top 48%)39(Top 39%)
30K18.64 mi3.11 mi954-9292-1431-31113(Top 57%)386(Top 49%)40(Top 40%)
35K21.75 mi3.11 mi959-5309-1732-1998(Top 51%)359(Top 45%)42(Top 42%)
25.2M25.20 mi3.45 mi982-23330-2135-31143(Top 59%)445(Top 56%)56(Top 56%)
Finish26.22 mi1.02 mi1007-25338-837-21399(Top 72%)550(Top 70%)66(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×1
+26ft-31ft

Overall

949

Females

277

F40-44

28

5K→10K

3.1 - 6.2 mi

Top 42%
×2
+38ft-17ft

Overall

828

Females

243

F40-44

25

10K→15K

6.2 - 9.3 mi

Top 49%
×2
+26ft-44ft

Overall

949

Females

277

F40-44

28

15K→20K

9.3 - 12.4 mi

Top 49%
×1
+35ft-22ft

Overall

955

Females

287

F40-44

30

20K→Half

12.4 - 13.1 mi

Top 60%
×1
+7ft-13ft

Overall

1165

Females

379

F40-44

38

Half→25K

13.1 - 15.5 mi

Top 59%
×2
+48ft-19ft

Overall

1151

Females

379

F40-44

39

25K→30K

15.5 - 18.6 mi

Top 57%
×2
+38ft-52ft

Overall

1113

Females

386

F40-44

40

30K→35K

18.6 - 21.8 mi

Top 51%
×2
+39ft-39ft

Overall

998

Females

359

F40-44

42

35K→25.2M

21.8 - 25.2 mi

Top 59%
×3
+57ft-58ft

Overall

1143

Females

445

F40-44

56

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×1
+17ft-12ft

Overall

1399

Females

550

F40-44

66

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
89
Passed By
339
Net Change
-250
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#757
5K → 10K844-36#757#793
10K → 15K372-69#793#862
15K → 20K1135-24#862#886
20K → Half722-15#886#901
Half → 25K145-44#901#945
25K → 30K1625-9#945#954
30K → 35K2934-5#954#959
35K → 25.2M1336-23#959#982
25.2M → Finish126-25#982#1007
TOTALS89339-250
📊

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

Upload your GPX file to see detailed activity metrics

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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.

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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management