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SHAMROCK MARATHON 2026

Jeffrey Robinette

Bib: 3878•M•Age: 55

Arlington, VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 2429
Gender (Male)
#0 / 1480
Masters (Masters Men)
#0 / 477
Division (M55-59)
#0 / 60
Race Day Weather
55°/45°F
few clouds

⏱️ Race Timeline

Course Elevation
-8–55 ft
≈
×5story building
•▲ 331 ft climb · ▼ 310 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
12:05/mi
37:33
↑ 26↓ 31
10K· 6.21 mi
12:55/mi
1:17:40
↑ 38↓ 170.1%
15K· 9.32 mi
13:44/mi
2:00:19
↑ 26↓ 440.1%
20K· 12.43 mi
14:17/mi
2:44:41
↑ 35↓ 22
Half· 13.10 mi
13:31/mi
2:53:45
↓ 130.2%
30K· 18.64 mi
15:04/mi
4:17:18
↑ 86↓ 72
35K· 21.75 mi
19:17/mi
5:17:13
↑ 39↓ 39
25.2M
19:16/mi
6:23:44
↑ 57↓ 58
Finish· 26.22 mi
19:16/mi
6:43:22
↑ 17↓ 12

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.10 mi
Time2:53:45
Pace13:16 /mi
2nd Half
Distance13.12 mi
Time3:49:37
Pace17:30 /mi
📊Positive Split: 32.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:07:5137:3312:0537:33
12:05
-
10K
6.21 mi08:47:581:17:4012:3040:07
12:55
+0:50
15K
9.32 mi09:30:372:00:1912:5542:39
13:44
+0:49
20K
12.43 mi10:14:592:44:4113:1544:22
14:17
+0:33
Half
13.10 mi10:24:032:53:4513:169:04
13:31
-0:46
30K
18.64 mi11:47:364:17:1813:481:23:33
15:04
+1:33
35K
21.75 mi12:47:315:17:1314:3559:55
19:17
+4:13
25.2M
25.20 mi13:54:026:23:4415:141:06:31
19:16
-0:01
Finish
26.22 mi14:13:406:43:2215:2419:38
19:16
0:00

Checkpoints & Pacing

📈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

12:05 /mi

Average Pace

15:24 /mi

Slowest Pace

19:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

37:33

9% of race

Time at Steady Pace

3:39:45

54% of race

Time at Slower Pace

2:26:04

36% of race

Average Pace: 15:23 /mi

Loading chart...
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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi08:07:5137:3312:0537:33
12:05
#2297
10K
6.21 mi08:47:581:17:4012:3040:07
12:55
#2345
15K
9.32 mi09:30:372:00:1912:5542:39
13:44
#2375
20K
12.43 mi10:14:592:44:4113:1544:22
14:17
#2376
Half
13.10 mi10:24:032:53:4513:169:04
13:31
#2349
30K
18.64 mi11:47:364:17:1813:481:23:33
15:04
#2329
35K
21.75 mi12:47:315:17:1314:3559:55
19:17
#2352
25.2M
25.20 mi13:54:026:23:4415:141:06:31
19:16
#2355
Finish
26.22 mi14:13:406:43:2215:2419:38
19:16
#2352
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi22971458572399(Top 99%)1508(Top 102%)57(Top 95%)
10K6.21 mi3.10 mi2345-481486-28572373(Top 98%)1497(Top 101%)57(Top 95%)
15K9.32 mi3.11 mi2375-301499-13572399(Top 99%)1508(Top 102%)57(Top 95%)
20K12.43 mi3.11 mi2376-11495+4572384(Top 98%)1492(Top 101%)58(Top 97%)
Half13.10 mi0.67 mi2349+271481+14572296(Top 95%)1442(Top 97%)57(Top 95%)
30K18.64 mi5.54 mi2329+201461+20572304(Top 95%)1428(Top 96%)57(Top 95%)
35K21.75 mi3.11 mi2352-231462-1572389(Top 98%)1454(Top 98%)58(Top 97%)
25.2M25.20 mi3.45 mi2355-31459+358-12382(Top 98%)1452(Top 98%)59(Top 98%)
Finish26.22 mi1.02 mi2352+31455+4582376(Top 98%)1448(Top 98%)58(Top 97%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×1story
+26ft-31ft

Overall

2399

Males

1508

M55-59

61

5K→10K

3.1 - 6.2 mi

Top 98%
×2story building
+38ft-17ft

Overall

2373

Males

1497

M55-59

61

10K→15K

6.2 - 9.3 mi

Top 99%
×2story building
+26ft-44ft

Overall

2399

Males

1508

M55-59

61

15K→20K

9.3 - 12.4 mi

Top 98%
×1story
+35ft-22ft

Overall

2384

Males

1492

M55-59

60

20K→Half

12.4 - 13.1 mi

Top 95%
×1human
+7ft-13ft

Overall

2296

Males

1442

M55-59

59

Half→30K

13.1 - 18.6 mi

Top 95%
×2story building
+86ft-72ft

Overall

2304

Males

1428

M55-59

57

30K→35K

18.6 - 21.8 mi

Top 98%
×2stacked humans
+39ft-39ft

Overall

2389

Males

1454

M55-59

58

35K→25.2M

21.8 - 25.2 mi

Top 98%
×3story building
+57ft-58ft

Overall

2382

Males

1452

M55-59

59

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×1human
+17ft-12ft

Overall

2376

Males

1448

M55-59

58

Passing Analysis

Category:
Athletes Passed
136*
Passed By
191
Net Change
-55
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2297
5K → 10K13*61-48#2297#2345
10K → 15K535-30#2345#2375
15K → 20K13*14-1#2375#2376
20K → Half30*3+27#2376#2349
Half → 30K43*23+20#2349#2329
30K → 35K8*31-23#2329#2352
35K → 25.2M18*21-3#2352#2355
25.2M → Finish6*3+3#2355#2352
TOTALS136*191-55

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management