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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

David Montague

Bib: 3161 •M •Age: 26

Arlington, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Top 49%
Gender (Male)
#0 / 1153
Age Group (M25-29)
#0 / 240
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
31:11
3.11 mi
Rank: #1209
Start → 5K
31:11 | 10:03/mi
10K
1:02:14
6.21 mi
Rank: #1170 (+39)
5K → 10K
31:03 | 10:00/mi
15K
1:33:30
9.32 mi
Rank: #1163 (+7)
10K → 15K
31:16 | 10:04/mi
20K
2:03:53
12.43 mi
Rank: #1129 (+34)
15K → 20K
30:23 | 9:47/mi
Half
2:11:04
13.10 mi
Rank: #1126 (+3)
20K → Half
7:11 | 10:43/mi
25K
2:35:04
15.53 mi
Rank: #1089 (+37)
Half → 25K
24:00 | 9:52/mi
30K
3:01:49
18.64 mi
Rank: #1036 (+53)
25K → 30K
26:45 | 8:37/mi
35K
3:36:33
21.75 mi
Rank: #963 (+73)
30K → 35K
34:44 | 11:11/mi
25.2M
4:15:17
25.20 mi
Rank: #948 (+15)
35K → 25.2M
38:44 | 11:14/mi
Finish
4:25:33
26.22 mi
Rank: #947 (+1)
25.2M → Finish
10:16 | 10:05/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:11:04
Pace10:01 /mi
2nd Half
Distance13.12 mi
Time2:14:29
Pace10:16 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:09:2531:1110:0331:11
10:03
-
10K
6.21 mi08:40:281:02:1410:0131:03
10:00
-0:03
15K
9.32 mi09:11:441:33:3010:0231:16
10:04
+0:04
20K
12.43 mi09:42:072:03:539:5930:23
9:47
-0:17
Half
13.10 mi09:49:182:11:0410:017:11
10:43
+0:56
25K
15.53 mi10:13:182:35:049:5924:00
9:52
-0:51
30K
18.64 mi10:40:033:01:499:4626:45
8:37
-1:15
35K
21.75 mi11:14:473:36:339:5834:44
11:11
+2:34
25.2M
25.20 mi11:53:314:15:1710:0838:44
11:14
+0:03
Finish
26.22 mi12:03:474:25:3310:0910:16
10:05
-1:09

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

8:37 /mi

Average Pace

10:08 /mi

Slowest Pace

11:14 /mi

Loading chart...
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

26:45

10% of race

Time at Steady Pace

2:38:09

60% of race

Time at Slower Pace

1:20:39

30% of race

Average Pace: 10:08 /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 mi08:09:2531:1110:0331:11
10:03
#1209
10K
6.21 mi08:40:281:02:1410:0131:03
10:00
#1170
15K
9.32 mi09:11:441:33:3010:0231:16
10:04
#1163
20K
12.43 mi09:42:072:03:539:5930:23
9:47
#1129
Half
13.10 mi09:49:182:11:0410:017:11
10:43
#1126
25K
15.53 mi10:13:182:35:049:5924:00
9:52
#1089
30K
18.64 mi10:40:033:01:499:4626:45
8:37
#1036
35K
21.75 mi11:14:473:36:339:5834:44
11:11
#963
25.2M
25.20 mi11:53:314:15:1710:0838:44
11:14
#948
Finish
26.22 mi12:03:474:25:3310:0910:16
10:05
#947
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
5K3.11 mi3.11 mi12098151751168(Top 60%)789(Top 68%)165(Top 69%)
10K6.21 mi3.10 mi1170+39791+24168+71158(Top 59%)787(Top 68%)170(Top 71%)
15K9.32 mi3.11 mi1163+7789+2169-11168(Top 60%)789(Top 68%)165(Top 69%)
20K12.43 mi3.11 mi1129+34767+22163+61061(Top 54%)729(Top 63%)154(Top 64%)
Half13.10 mi0.67 mi1126+3762+5161+21102(Top 57%)751(Top 65%)158(Top 66%)
25K15.53 mi2.43 mi1089+37739+23156+5888(Top 46%)625(Top 54%)133(Top 55%)
30K18.64 mi3.11 mi1036+53705+34150+6794(Top 41%)548(Top 48%)113(Top 47%)
35K21.75 mi3.11 mi963+73653+52139+11697(Top 36%)466(Top 40%)97(Top 40%)
25.2M25.20 mi3.45 mi948+15637+16137+2968(Top 50%)594(Top 52%)127(Top 53%)
Finish26.22 mi1.02 mi947+1631+6136+1977(Top 50%)608(Top 53%)132(Top 55%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×1
+26ft-31ft

Overall

1168

Males

789

M25-29

165

5K→10K

3.1 - 6.2 mi

Top 59%
×2
+38ft-17ft

Overall

1158

Males

787

M25-29

170

10K→15K

6.2 - 9.3 mi

Top 60%
×2
+26ft-44ft

Overall

1168

Males

789

M25-29

165

15K→20K

9.3 - 12.4 mi

Top 54%
×1
+35ft-22ft

Overall

1061

Males

729

M25-29

154

20K→Half

12.4 - 13.1 mi

Top 57%
×1
+7ft-13ft

Overall

1102

Males

751

M25-29

158

Half→25K

13.1 - 15.5 mi

Top 46%
×2
+48ft-19ft

Overall

888

Males

625

M25-29

133

25K→30K

15.5 - 18.6 mi

Top 41%
×2
+38ft-52ft

Overall

794

Males

548

M25-29

113

30K→35K

18.6 - 21.8 mi

Top 36%
×2
+39ft-39ft

Overall

697

Males

466

M25-29

97

35K→25.2M

21.8 - 25.2 mi

Top 50%
×3
+57ft-58ft

Overall

968

Males

594

M25-29

127

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×1
+17ft-12ft

Overall

977

Males

608

M25-29

132

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
324
Passed By
62
Net Change
+262
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1209
5K → 10K4910+39#1209#1170
10K → 15K2114+7#1170#1163
15K → 20K373+34#1163#1129
20K → Half63+3#1129#1126
Half → 25K414+37#1126#1089
25K → 30K530+53#1089#1036
30K → 35K796+73#1036#963
35K → 25.2M3015+15#963#948
25.2M → Finish87+1#948#947
TOTALS32462+262
📊

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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Your certificate is generated on-demand and can be shared on social media or saved for your records

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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