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BOSTON MARATHON 2023

Harriet Irving

Bib: 15220•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:20/mi
25:54
↑ 97↓ 3451.5%
10K· 6.21 mi
8:38/mi
52:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:50/mi
1:20:09
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:47:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:17/mi
1:53:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:14:57
↑ 66↓ 880.2%
30K· 18.64 mi
8:45/mi
2:42:09
↑ 181↓ 1480.2%
20M
8:49/mi
2:54:08
↑ 64↓ 500.2%
21M
9:30/mi
3:03:38
↑ 106↓ 241.6%
35K· 21.75 mi
8:56/mi
3:10:19
↑ 17↓ 861.7%
23M
8:26/mi
3:20:53
↑ 23↓ 630.6%
24M
8:12/mi
3:29:05
↓ 821.3%
40K· 24.85 mi
8:24/mi
3:36:16
↓ 200.3%
25.2M
8:48/mi
3:39:18
↑ 13↓ 160.2%
Finish· 26.22 mi
7:40/mi
3:47:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:53:37
Pace8:40 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:53:30
Pace8:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:2125:548:2025:54
8:20
-
10K
6.21 mi11:23:1052:438:2926:49
8:38
+0:18
15K
9.32 mi11:50:361:20:098:3627:26
8:50
+0:12
20K
12.43 mi12:18:251:47:588:4127:49
8:57
+0:07
Half
13.11 mi12:24:041:53:378:405:39
8:17
-0:40
25K
15.53 mi12:45:242:14:578:4121:20
8:48
+0:31
30K
18.64 mi13:12:362:42:098:4227:12
8:45
-0:03
20M
20.00 mi13:24:352:54:088:4211:59
8:49
+0:04
21M
21.00 mi13:34:053:03:388:459:30
9:30
+0:41
35K
21.75 mi13:40:463:10:198:456:41
8:56
-0:34
23M
23.00 mi13:51:203:20:538:4410:34
8:26
-0:30
24M
24.00 mi13:59:323:29:058:438:12
8:12
-0:14
40K
24.85 mi14:06:433:36:168:427:11
8:24
+0:12
25.2M
25.20 mi14:09:453:39:188:423:02
8:48
+0:24
Finish
26.22 mi14:17:343:47:078:407:49
7:40
-1:08

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

7:40 /mi

Average Pace

8:40 /mi

Slowest Pace

9:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:19

29% of race

Time at Steady Pace

2:32:18

67% of race

Time at Slower Pace

9:30

4% of race

Average Pace: 8:40 /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 mi10:56:2125:548:2025:54
8:20
#16405
10K
6.21 mi11:23:1052:438:2926:49
8:38
#17811
15K
9.32 mi11:50:361:20:098:3627:26
8:50
#18478
20K
12.43 mi12:18:251:47:588:4127:49
8:57
#18728
Half
13.11 mi12:24:041:53:378:405:39
8:17
#18616
25K
15.53 mi12:45:242:14:578:4121:20
8:48
#18502
30K
18.64 mi13:12:362:42:098:4227:12
8:45
#17965
20M
20.00 mi13:24:352:54:088:4211:59
8:49
#17762
21M
21.00 mi13:34:053:03:388:459:30
9:30
#17661
35K
21.75 mi13:40:463:10:198:456:41
8:56
#17644
23M
23.00 mi13:51:203:20:538:4410:34
8:26
#17374
24M
24.00 mi13:59:323:29:058:438:12
8:12
#17157
40K
24.85 mi14:06:433:36:168:427:11
8:24
#17002
25.2M
25.20 mi14:09:453:39:188:423:02
8:48
#16916
Finish
26.22 mi14:17:343:47:078:407:49
7:40
#16647
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi164055540554019672(Top 74%)7489(Top 66%)7489(Top 153%)
10K6.21 mi3.10 mi17811-14066409-8696409-86919018(Top 71%)7085(Top 62%)7085(Top 145%)
15K9.32 mi3.11 mi18478-6676801-3926801-39219672(Top 74%)7489(Top 66%)7489(Top 153%)
20K12.43 mi3.11 mi18728-2506952-1516952-15119483(Top 73%)7369(Top 65%)7369(Top 151%)
Half13.11 mi0.68 mi18616+1126877+756877+7516429(Top 62%)5561(Top 49%)5561(Top 114%)
25K15.53 mi2.42 mi18502+1146831+466831+4617947(Top 67%)6526(Top 57%)6526(Top 134%)
30K18.64 mi3.11 mi17965+5376544+2876544+28715820(Top 59%)5398(Top 47%)5398(Top 111%)
20M20.00 mi1.36 mi17762+2036433+1116433+11115558(Top 58%)5315(Top 47%)5315(Top 109%)
21M21.00 mi1.00 mi17661+1016386+476386+4715978(Top 60%)5622(Top 49%)5622(Top 115%)
35K21.75 mi0.75 mi17644+176389-36389-317635(Top 66%)6621(Top 58%)6621(Top 136%)
23M23.00 mi1.25 mi17374+2706241+1486241+14812893(Top 48%)4017(Top 35%)4017(Top 82%)
24M24.00 mi1.00 mi17157+2176131+1106131+11012663(Top 48%)3963(Top 35%)3963(Top 81%)
40K24.85 mi0.85 mi17002+1556063+686063+6812767(Top 48%)4105(Top 36%)4105(Top 84%)
25.2M25.20 mi0.35 mi16916+866024+396024+3911450(Top 43%)3462(Top 30%)3462(Top 71%)
Finish26.22 mi1.02 mi16647+2695868+1565868+1569835(Top 37%)2640(Top 23%)2640(Top 54%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19672

Females

7489

F18-39

7489

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

19018

Females

7085

F18-39

7085

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19672

Females

7489

F18-39

7489

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19483

Females

7369

F18-39

7369

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

16429

Females

5561

F18-39

5561

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17947

Females

6526

F18-39

6526

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

15820

Females

5398

F18-39

5398

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

15558

Females

5315

F18-39

5315

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

15978

Females

5622

F18-39

5622

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

17635

Females

6621

F18-39

6621

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12893

Females

4017

F18-39

4017

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

12663

Females

3963

F18-39

3963

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12767

Females

4105

F18-39

4105

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11450

Females

3462

F18-39

3462

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

9835

Females

2640

F18-39

2640

Passing Analysis

Category:
Athletes Passed
2432
Passed By
2674
Net Change
-242
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16405
5K → 10K391445-1406#16405#17811
10K → 15K41708-667#17811#18478
15K → 20K90340-250#18478#18728
20K → Half1131+112#18728#18616
Half → 25K18167+114#18616#18502
25K → 30K55215+537#18502#17965
30K → 20M2129+203#17965#17762
20M → 21M13433+101#17762#17661
21M → 35K5841+17#17661#17644
35K → 23M2744+270#17644#17374
23M → 24M2203+217#17374#17157
24M → 40K1627+155#17157#17002
40K → 25.2M871+86#17002#16916
25.2M → Finish2690+269#16916#16647
TOTALS24322674-242
📊

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

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing