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SHAMROCK MARATHON 2026

Kasey Altaffer

Mechanicsville, VA

Bib: 1962 F 29

0:00
0:00
/ mi
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Overall
#0 / 2429
Gender (Female)
#0 / 943
Division (F25-29)
#0 / 200
Race Day Weather
55°/45°F
few clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
7 ft elev
5K· 3.11 mi
11:52/mi
36:51
↑ 26↓ 31
1 ft elev
10K· 6.21 mi
10:15/mi
1:08:41
↑ 38↓ 170.1%
22 ft elev
15K· 9.32 mi
10:33/mi
1:41:28
↑ 26↓ 440.1%
5 ft elev
20K· 12.43 mi
11:00/mi
2:15:40
↑ 35↓ 22
17 ft elev
Half· 13.10 mi
11:55/mi
2:23:40
↓ 130.2%
11 ft elev
30K· 18.64 mi
12:29/mi
3:32:52
↑ 86↓ 72
25 ft elev
35K· 21.75 mi
13:41/mi
4:15:22
↑ 39↓ 39
25 ft elev
25.2M
12:46/mi
4:59:27
↑ 57↓ 58
24 ft elev
Finish· 26.22 mi
11:03/mi
5:10:43
↑ 17↓ 12
28 ft elev
Course Elevation
-8–55 ft
≈
×5story building
•▲ 331 ft climb · ▼ 310 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.10 mi
Time2:23:40
Pace10:58 /mi
2nd Half
Distance13.12 mi
Time2:47:03
Pace12:44 /mi
📊Positive Split: 16.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:18:5336:5111:5236:51
11:52
-
10K
6.21 mi08:50:431:08:4111:0331:50
10:15
-1:37
15K
9.32 mi09:23:301:41:2810:5332:47
10:33
+0:18
20K
12.43 mi09:57:422:15:4010:5534:12
11:00
+0:27
Half
13.10 mi10:05:422:23:4010:588:00
11:55
+0:55
30K
18.64 mi11:14:543:32:5211:251:09:12
12:29
+0:34
35K
21.75 mi11:57:244:15:2211:4542:30
13:41
+1:12
25.2M
25.20 mi12:41:294:59:2711:5344:05
12:46
-0:55
Finish
26.22 mi12:52:455:10:4311:5211:16
11:03
-1:43

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

10:15 /mi

Average Pace

11:52 /mi

Slowest Pace

13:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:05

35% of race

Time at Steady Pace

44:51

14% of race

Time at Slower Pace

2:35:47

50% of race

Average Pace: 11:51 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi08:18:5336:5111:5236:51
11:52
#2247
10K
6.21 mi08:50:431:08:4111:0331:50
10:15
#2054
15K
9.32 mi09:23:301:41:2810:5332:47
10:33
#1951
20K
12.43 mi09:57:422:15:4010:5534:12
11:00
#1916
Half
13.10 mi10:05:422:23:4010:588:00
11:55
#1897
30K
18.64 mi11:14:543:32:5211:251:09:12
12:29
#1903
35K
21.75 mi11:57:244:15:2211:4542:30
13:41
#1843
25.2M
25.20 mi12:41:294:59:2711:5344:05
12:46
#1759
Finish
26.22 mi12:52:455:10:4311:5211:16
11:03
#1745
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF25-29Seg. OverallSeg. FemalesSeg. F25-29
5K3.11 mi3.11 mi22478051771774(Top 73%)582(Top 62%)126(Top 64%)
10K6.21 mi3.10 mi2054+193708+97164+131701(Top 70%)543(Top 58%)117(Top 59%)
15K9.32 mi3.11 mi1951+103657+51150+141774(Top 73%)582(Top 62%)126(Top 64%)
20K12.43 mi3.11 mi1916+35644+13147+31858(Top 76%)626(Top 66%)145(Top 73%)
Half13.10 mi0.67 mi1897+19640+4151-42063(Top 85%)729(Top 77%)162(Top 82%)
30K18.64 mi5.54 mi1903-6661-21153-21943(Top 80%)697(Top 74%)152(Top 77%)
35K21.75 mi3.11 mi1843+60640+21145+81575(Top 65%)582(Top 62%)126(Top 64%)
25.2M25.20 mi3.45 mi1759+84617+23138+71419(Top 58%)540(Top 57%)118(Top 60%)
Finish26.22 mi1.02 mi1745+14614+3137+11347(Top 55%)490(Top 52%)114(Top 58%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×1story
+26ft-31ft

Overall

1774

Females

582

F25-29

133

5K→10K

3.1 - 6.2 mi

Top 70%
×2story building
+38ft-17ft

Overall

1701

Females

543

F25-29

125

10K→15K

6.2 - 9.3 mi

Top 73%
×2story building
+26ft-44ft

Overall

1774

Females

582

F25-29

133

15K→20K

9.3 - 12.4 mi

Top 76%
×1story
+35ft-22ft

Overall

1858

Females

626

F25-29

151

20K→Half

12.4 - 13.1 mi

Top 85%
×1human
+7ft-13ft

Overall

2063

Females

729

F25-29

167

Half→30K

13.1 - 18.6 mi

Top 80%
×2story building
+86ft-72ft

Overall

1943

Females

697

F25-29

155

30K→35K

18.6 - 21.8 mi

Top 65%
×2stacked humans
+39ft-39ft

Overall

1575

Females

582

F25-29

128

35K→25.2M

21.8 - 25.2 mi

Top 58%
×3story building
+57ft-58ft

Overall

1419

Females

540

F25-29

120

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×1human
+17ft-12ft

Overall

1347

Females

490

F25-29

116

Passing Analysis

Category:
Athletes Passed
611*
Passed By
109
Net Change
+502
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2247
5K → 10K194*1+193#2247#2054
10K → 15K1041+103#2054#1951
15K → 20K47*12+35#1951#1916
20K → Half34*15+19#1916#1897
Half → 30K63*69-6#1897#1903
30K → 35K66*6+60#1903#1843
35K → 25.2M87*3+84#1843#1759
25.2M → Finish16*2+14#1759#1745
TOTALS611*109+502

* 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