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BOSTON MARATHON 2023

Katherine Iandoli

Bib: 17547•F

VA

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0:00
0:00
/ mi
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Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 22%
Age Group (F18-39)
#0 / 4884
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

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· 3.11 mi
24:28
Rank: #13042
Start → 5K
24:28 | 7:53/mi
10K· 6.21 mi
48:43
Rank: #13094 (-52)
5K → 10K
24:15 | 7:48/mi
15K· 9.32 mi
1:12:41
Rank: #12665 (+429)
10K → 15K
23:58 | 7:43/mi
20K· 12.43 mi
1:36:42
Rank: #12225 (+440)
15K → 20K
24:01 | 7:44/mi
Half· 13.11 mi
1:41:55
Rank: #12179 (+46)
20K → Half
5:13 | 7:39/mi
25K· 15.53 mi
2:00:47
Rank: #11966 (+213)
Half → 25K
18:52 | 7:47/mi
30K· 18.64 mi
2:25:08
Rank: #11494 (+472)
25K → 30K
24:21 | 7:50/mi
20M
2:35:56
Rank: #11334 (+160)
30K → 20M
10:48 | 7:57/mi
21M
2:44:13
Rank: #11165 (+169)
20M → 21M
8:17 | 8:17/mi
35K· 21.75 mi
2:50:01
Rank: #11127 (+38)
21M → 35K
5:48 | 7:45/mi
23M
2:59:58
Rank: #10987 (+140)
35K → 23M
9:57 | 7:57/mi
24M
3:07:59
Rank: #11001 (-14)
23M → 24M
8:01 | 8:01/mi
40K· 24.85 mi
3:14:53
Rank: #10977 (+24)
24M → 40K
6:54 | 8:04/mi
25.2M
3:17:49
Rank: #10930 (+47)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:25:37
Rank: #10865 (+65)
25.2M → Finish
7:48 | 7:39/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:41:55
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time1:43:42
Pace7:55 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0024:287:5324:28
7:53
-
10K
6.21 mi11:39:1548:437:5024:15
7:48
-0:05
15K
9.32 mi12:03:131:12:417:4823:58
7:43
-0:05
20K
12.43 mi12:27:141:36:427:4724:01
7:44
+0:01
Half
13.11 mi12:32:271:41:557:465:13
7:39
-0:05
25K
15.53 mi12:51:192:00:477:4718:52
7:47
+0:08
30K
18.64 mi13:15:402:25:087:4724:21
7:50
+0:03
20M
20.00 mi13:26:282:35:567:4810:48
7:57
+0:07
21M
21.00 mi13:34:452:44:137:498:17
8:17
+0:20
35K
21.75 mi13:40:332:50:017:495:48
7:45
-0:32
23M
23.00 mi13:50:302:59:587:499:57
7:57
+0:12
24M
24.00 mi13:58:313:07:597:508:01
8:01
+0:04
40K
24.85 mi14:05:253:14:537:506:54
8:04
+0:03
25.2M
25.20 mi14:08:213:17:497:512:56
8:30
+0:26
Finish
26.22 mi14:16:093:25:377:517:48
7:39
-0:51

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

7:39 /mi

Average Pace

7:51 /mi

Slowest Pace

8:30 /mi

Loading chart...
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

3:22:41

99% of race

Time at Steady Pace

2:56

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:51 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:15:0024:287:5324:28
7:53
#13042
10K
6.21 mi11:39:1548:437:5024:15
7:48
#13094
15K
9.32 mi12:03:131:12:417:4823:58
7:43
#12665
20K
12.43 mi12:27:141:36:427:4724:01
7:44
#12225
Half
13.11 mi12:32:271:41:557:465:13
7:39
#12179
25K
15.53 mi12:51:192:00:477:4718:52
7:47
#11966
30K
18.64 mi13:15:402:25:087:4724:21
7:50
#11494
20M
20.00 mi13:26:282:35:567:4810:48
7:57
#11334
21M
21.00 mi13:34:452:44:137:498:17
8:17
#11165
35K
21.75 mi13:40:332:50:017:495:48
7:45
#11127
23M
23.00 mi13:50:302:59:587:499:57
7:57
#10987
24M
24.00 mi13:58:313:07:597:508:01
8:01
#11001
40K
24.85 mi14:05:253:14:537:506:54
8:04
#10977
25.2M
25.20 mi14:08:213:17:497:512:56
8:30
#10930
Finish
26.22 mi14:16:093:25:377:517:48
7:39
#10865
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi130423463346311970(Top 45%)2881(Top 25%)2881(Top 59%)
10K6.21 mi3.10 mi13094-523500-373500-3713173(Top 49%)3528(Top 31%)3528(Top 72%)
15K9.32 mi3.11 mi12665+4293263+2373263+23711970(Top 45%)2881(Top 25%)2881(Top 59%)
20K12.43 mi3.11 mi12225+4403047+2163047+21611158(Top 42%)2491(Top 22%)2491(Top 51%)
Half13.11 mi0.68 mi12179+463024+233024+2311460(Top 43%)2601(Top 23%)2601(Top 53%)
25K15.53 mi2.42 mi11966+2132919+1052919+10510958(Top 41%)2460(Top 22%)2460(Top 50%)
30K18.64 mi3.11 mi11494+4722685+2342685+2349662(Top 36%)2008(Top 18%)2008(Top 41%)
20M20.00 mi1.36 mi11334+1602615+702615+709915(Top 37%)2195(Top 19%)2195(Top 45%)
21M21.00 mi1.00 mi11165+1692543+722543+729170(Top 34%)2002(Top 18%)2002(Top 41%)
35K21.75 mi0.75 mi11127+382535+82535+810333(Top 39%)2522(Top 22%)2522(Top 52%)
23M23.00 mi1.25 mi10987+1402490+452490+459420(Top 35%)2229(Top 20%)2229(Top 46%)
24M24.00 mi1.00 mi11001-142524-342524-3411372(Top 43%)3267(Top 29%)3267(Top 67%)
40K24.85 mi0.85 mi10977+242539-152539-1510535(Top 40%)2897(Top 25%)2897(Top 59%)
25.2M25.20 mi0.35 mi10930+472534+52534+59645(Top 36%)2528(Top 22%)2528(Top 52%)
Finish26.22 mi1.02 mi10865+652529+52529+59682(Top 36%)2561(Top 22%)2561(Top 52%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

11970

Females

2881

F18-39

2881

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

13173

Females

3528

F18-39

3528

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

11970

Females

2881

F18-39

2881

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11158

Females

2491

F18-39

2491

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11460

Females

2601

F18-39

2601

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10958

Females

2460

F18-39

2460

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9662

Females

2008

F18-39

2008

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9915

Females

2195

F18-39

2195

20M→21M

20.0 - 21.0 mi

Top 34%
×8stories
+106ft-24ft

Overall

9170

Females

2002

F18-39

2002

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

10333

Females

2522

F18-39

2522

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9420

Females

2229

F18-39

2229

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

11372

Females

3267

F18-39

3267

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10535

Females

2897

F18-39

2897

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9645

Females

2528

F18-39

2528

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

9682

Females

2561

F18-39

2561

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2936
Passed By
759
Net Change
+2177
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13042
5K → 10K285337-52#13042#13094
10K → 15K49364+429#13094#12665
15K → 20K46323+440#12665#12225
20K → Half6014+46#12225#12179
Half → 25K24633+213#12179#11966
25K → 30K49321+472#11966#11494
30K → 20M17717+160#11494#11334
20M → 21M18819+169#11334#11165
21M → 35K6123+38#11165#11127
35K → 23M16828+140#11127#10987
23M → 24M6579-14#10987#11001
24M → 40K7753+24#11001#10977
40K → 25.2M6215+47#10977#10930
25.2M → Finish9833+65#10930#10865
TOTALS2936759+2177
📊

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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing