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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Brett Sandford

Bib: 3202 •M •Age: 28

Washington, DC

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
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
30:33
3.11 mi
Rank: #1131
Start → 5K
30:33 | 9:50/mi
10K
1:01:15
6.21 mi
Rank: #1117 (+14)
5K → 10K
30:42 | 9:53/mi
15K
1:32:40
9.32 mi
Rank: #1133 (-16)
10K → 15K
31:25 | 10:07/mi
20K
2:04:32
12.43 mi
Rank: #1146 (-13)
15K → 20K
31:52 | 10:16/mi
Half
2:11:53
13.10 mi
Rank: #1141 (+5)
20K → Half
7:21 | 10:58/mi
25K
2:40:54
15.53 mi
Rank: #1209 (-68)
Half → 25K
29:01 | 11:55/mi
30K
3:14:15
18.64 mi
Rank: #1263 (-54)
25K → 30K
33:21 | 10:45/mi
35K
3:51:50
21.75 mi
Rank: #1195 (+68)
30K → 35K
37:35 | 12:06/mi
25.2M
4:31:04
25.20 mi
Rank: #1162 (+33)
35K → 25.2M
39:14 | 11:22/mi
Finish
4:41:13
26.22 mi
Rank: #1150 (+12)
25.2M → Finish
10:09 | 9:58/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:11:53
Pace10:05 /mi
2nd Half
Distance13.12 mi
Time2:29:21
Pace11:23 /mi
📊Positive Split: 13.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:11:1130:339:5030:33
9:50
-
10K
6.21 mi08:41:531:01:159:5230:42
9:53
+0:03
15K
9.32 mi09:13:181:32:409:5731:25
10:07
+0:14
20K
12.43 mi09:45:102:04:3210:0231:52
10:16
+0:09
Half
13.10 mi09:52:312:11:5310:057:21
10:58
+0:42
25K
15.53 mi10:21:322:40:5410:2229:01
11:55
+0:57
30K
18.64 mi10:54:533:14:1510:2633:21
10:45
-1:10
35K
21.75 mi11:32:283:51:5010:4037:35
12:06
+1:21
25.2M
25.20 mi12:11:424:31:0410:4639:14
11:22
-0:44
Finish
26.22 mi12:21:514:41:1310:4510:09
9:58
-1:24

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

9:50 /mi

Average Pace

10:44 /mi

Slowest Pace

12:06 /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

2:14:41

48% of race

Time at Steady Pace

40:42

14% of race

Time at Slower Pace

1:45:50

38% of race

Average Pace: 10:44 /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 mi08:11:1130:339:5030:33
9:50
#1131
10K
6.21 mi08:41:531:01:159:5230:42
9:53
#1117
15K
9.32 mi09:13:181:32:409:5731:25
10:07
#1133
20K
12.43 mi09:45:102:04:3210:0231:52
10:16
#1146
Half
13.10 mi09:52:312:11:5310:057:21
10:58
#1141
25K
15.53 mi10:21:322:40:5410:2229:01
11:55
#1209
30K
18.64 mi10:54:533:14:1510:2633:21
10:45
#1263
35K
21.75 mi11:32:283:51:5010:4037:35
12:06
#1195
25.2M
25.20 mi12:11:424:31:0410:4639:14
11:22
#1162
Finish
26.22 mi12:21:514:41:1310:4510:09
9:58
#1150
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 mi11317641641187(Top 61%)802(Top 70%)169(Top 70%)
10K6.21 mi3.10 mi1117+14759+5165-11107(Top 57%)761(Top 66%)167(Top 70%)
15K9.32 mi3.11 mi1133-16775-16166-11187(Top 61%)802(Top 70%)169(Top 70%)
20K12.43 mi3.11 mi1146-13778-3168-21210(Top 62%)810(Top 70%)170(Top 71%)
Half13.10 mi0.67 mi1141+5774+4166+21174(Top 60%)788(Top 68%)166(Top 69%)
25K15.53 mi2.43 mi1209-68814-40173-71464(Top 75%)923(Top 80%)193(Top 80%)
30K18.64 mi3.11 mi1263-54833-191731444(Top 74%)890(Top 77%)181(Top 75%)
35K21.75 mi3.11 mi1195+68785+48162+11930(Top 48%)600(Top 52%)126(Top 53%)
25.2M25.20 mi3.45 mi1162+33761+24156+61006(Top 52%)614(Top 53%)131(Top 55%)
Finish26.22 mi1.02 mi1150+12751+10154+2943(Top 48%)591(Top 51%)126(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×1
+26ft-31ft

Overall

1187

Males

802

M25-29

169

5K→10K

3.1 - 6.2 mi

Top 57%
×2
+38ft-17ft

Overall

1107

Males

761

M25-29

167

10K→15K

6.2 - 9.3 mi

Top 61%
×2
+26ft-44ft

Overall

1187

Males

802

M25-29

169

15K→20K

9.3 - 12.4 mi

Top 62%
×1
+35ft-22ft

Overall

1210

Males

810

M25-29

170

20K→Half

12.4 - 13.1 mi

Top 60%
×1
+7ft-13ft

Overall

1174

Males

788

M25-29

166

Half→25K

13.1 - 15.5 mi

Top 75%
×2
+48ft-19ft

Overall

1464

Males

923

M25-29

193

25K→30K

15.5 - 18.6 mi

Top 74%
×2
+38ft-52ft

Overall

1444

Males

890

M25-29

181

30K→35K

18.6 - 21.8 mi

Top 48%
×2
+39ft-39ft

Overall

930

Males

600

M25-29

126

35K→25.2M

21.8 - 25.2 mi

Top 52%
×3
+57ft-58ft

Overall

1006

Males

614

M25-29

131

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×1
+17ft-12ft

Overall

943

Males

591

M25-29

126

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
207
Passed By
226
Net Change
-19
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1131
5K → 10K4127+14#1131#1117
10K → 15K1632-16#1117#1133
15K → 20K1023-13#1133#1146
20K → Half61+5#1146#1141
Half → 25K371-68#1141#1209
25K → 30K862-54#1209#1263
30K → 35K702+68#1263#1195
35K → 25.2M407+33#1195#1162
25.2M → Finish131+12#1162#1150
TOTALS207226-19
📊

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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