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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

John Ferreira

Bib: 342 •M •Age: 22

Ashburn, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Top 27%
Gender (Male)
#0 / 1153
Top 32%
Age Group (M20-24)
Official
#0 / 127
Calculated (M20-24)
#0 / 127
Top 38%
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
27:00
3.11 mi
Rank: #632
Start → 5K
27:00 | 8:42/mi
10K
54:04
6.21 mi
Rank: #631 (+1)
5K → 10K
27:04 | 8:43/mi
15K
1:21:16
9.32 mi
Rank: #637 (-6)
10K → 15K
27:12 | 8:46/mi
20K
1:48:03
12.43 mi
Rank: #622 (+15)
15K → 20K
26:47 | 8:38/mi
Half
1:54:22
13.10 mi
Rank: #616 (+6)
20K → Half
6:19 | 9:25/mi
25K
2:15:59
15.53 mi
Rank: #594 (+22)
Half → 25K
21:37 | 8:53/mi
30K
2:41:42
18.64 mi
Rank: #598 (-4)
25K → 30K
25:43 | 8:17/mi
35K
3:18:08
21.75 mi
Rank: #653 (-55)
30K → 35K
36:26 | 11:44/mi
25.2M
3:47:43
25.20 mi
Rank: #570 (+83)
35K → 25.2M
29:35 | 8:35/mi
Finish
3:54:05
26.22 mi
Rank: #522 (+48)
25.2M → Finish
6:22 | 6:15/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time1:54:22
Pace8:44 /mi
2nd Half
Distance13.12 mi
Time1:59:44
Pace9:08 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:03:0727:008:4227:00
8:42
-
10K
6.21 mi08:30:1154:048:4327:04
8:43
+0:01
15K
9.32 mi08:57:231:21:168:4427:12
8:46
+0:03
20K
12.43 mi09:24:101:48:038:4226:47
8:38
-0:08
Half
13.10 mi09:30:291:54:228:446:19
9:25
+0:47
25K
15.53 mi09:52:062:15:598:4621:37
8:53
-0:32
30K
18.64 mi10:17:492:41:428:4125:43
8:17
-0:36
35K
21.75 mi10:54:153:18:089:0736:26
11:44
+3:27
25.2M
25.20 mi11:23:503:47:439:0329:35
8:35
-3:09
Finish
26.22 mi11:30:123:54:058:576:22
6:15
-2:20

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

6:15 /mi

Average Pace

8:56 /mi

Slowest Pace

11:44 /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

6:22

3% of race

Time at Steady Pace

3:04:58

79% of race

Time at Slower Pace

42:45

18% of race

Average Pace: 8:56 /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 mi08:03:0727:008:4227:00
8:42
#632
10K
6.21 mi08:30:1154:048:4327:04
8:43
#631
15K
9.32 mi08:57:231:21:168:4427:12
8:46
#637
20K
12.43 mi09:24:101:48:038:4226:47
8:38
#622
Half
13.10 mi09:30:291:54:228:446:19
9:25
#616
25K
15.53 mi09:52:062:15:598:4621:37
8:53
#594
30K
18.64 mi10:17:492:41:428:4125:43
8:17
#598
35K
21.75 mi10:54:153:18:089:0736:26
11:44
#653
25.2M
25.20 mi11:23:503:47:439:0329:35
8:35
#570
Finish
26.22 mi11:30:123:54:058:576:22
6:15
#522
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM20-24Seg. OverallSeg. MalesSeg. M20-24
5K3.11 mi3.11 mi63246652641(Top 33%)472(Top 41%)61(Top 48%)
10K6.21 mi3.10 mi631+1463+356-4630(Top 32%)461(Top 40%)57(Top 45%)
15K9.32 mi3.11 mi637-6466-357-1641(Top 33%)472(Top 41%)61(Top 48%)
20K12.43 mi3.11 mi622+15457+959-2560(Top 29%)414(Top 36%)52(Top 41%)
Half13.10 mi0.67 mi616+6453+458+1642(Top 33%)472(Top 41%)59(Top 46%)
25K15.53 mi2.43 mi594+22437+1654+4537(Top 28%)395(Top 34%)52(Top 41%)
30K18.64 mi3.11 mi598-443754687(Top 35%)488(Top 42%)64(Top 50%)
35K21.75 mi3.11 mi653-55466-2960-6839(Top 43%)549(Top 48%)67(Top 53%)
25.2M25.20 mi3.45 mi570+83403+6351+9273(Top 14%)196(Top 17%)20(Top 16%)
Finish26.22 mi1.02 mi522+48372+3148+317(Top 0.9%)17(Top 1%)5(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×1
+26ft-31ft

Overall

641

Males

472

M20-24

61

5K→10K

3.1 - 6.2 mi

Top 32%
×2
+38ft-17ft

Overall

630

Males

461

M20-24

57

10K→15K

6.2 - 9.3 mi

Top 33%
×2
+26ft-44ft

Overall

641

Males

472

M20-24

61

15K→20K

9.3 - 12.4 mi

Top 29%
×1
+35ft-22ft

Overall

560

Males

414

M20-24

52

20K→Half

12.4 - 13.1 mi

Top 33%
×1
+7ft-13ft

Overall

642

Males

472

M20-24

59

Half→25K

13.1 - 15.5 mi

Top 28%
×2
+48ft-19ft

Overall

537

Males

395

M20-24

52

25K→30K

15.5 - 18.6 mi

Top 35%
×2
+38ft-52ft

Overall

687

Males

488

M20-24

64

30K→35K

18.6 - 21.8 mi

Top 43%
×2
+39ft-39ft

Overall

839

Males

549

M20-24

67

35K→25.2M

21.8 - 25.2 mi

Top 14%
×3
+57ft-58ft

Overall

273

Males

196

M20-24

20

25.2M→Finish

25.2 - 26.2 mi

Top 0.9%
×1
+17ft-12ft

Overall

17

Males

17

M20-24

5

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
250
Passed By
140
Net Change
+110
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#632
5K → 10K2221+1#632#631
10K → 15K1117-6#631#637
15K → 20K183+15#637#622
20K → Half104+6#622#616
Half → 25K308+22#616#594
25K → 30K1519-4#594#598
30K → 35K1267-55#598#653
35K → 25.2M841+83#653#570
25.2M → Finish480+48#570#522
TOTALS250140+110
📊

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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