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BOSTON MARATHON 2023

Kaitlin Halloran

Bib: 19454•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 24%
Masters (Masters Women)
#0 / 6539
Top 12%
Division (F40-44)
#0 / 1878
Top 24%
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
7:58/mi
24:44
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
48:53
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:13:16
↑ 67↓ 78
20K· 12.43 mi
7:54/mi
1:37:48
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:43:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:58/mi
2:02:27
↑ 66↓ 880.2%
30K· 18.64 mi
7:59/mi
2:27:14
↑ 181↓ 1480.2%
20M
8:05/mi
2:38:13
↑ 64↓ 500.2%
21M
8:14/mi
2:46:27
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:52:19
↑ 17↓ 861.7%
23M
8:05/mi
3:02:26
↑ 23↓ 630.6%
24M
7:47/mi
3:10:13
↓ 821.3%
40K· 24.85 mi
7:53/mi
3:16:57
↓ 200.3%
25.2M
8:10/mi
3:19:46
↑ 13↓ 160.2%
Finish· 26.22 mi
7:16/mi
3:27:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:43:09
Pace7:52 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:44:01
Pace7:56 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2824:447:5824:44
7:58
-
10K
6.21 mi11:40:3748:537:5224:09
7:46
-0:12
15K
9.32 mi12:05:001:13:167:5224:23
7:51
+0:05
20K
12.43 mi12:29:321:37:487:5224:32
7:54
+0:03
Half
13.11 mi12:34:531:43:097:525:21
7:50
-0:04
25K
15.53 mi12:54:112:02:277:5319:18
7:58
+0:08
30K
18.64 mi13:18:582:27:147:5424:47
7:59
+0:01
20M
20.00 mi13:29:572:38:137:5510:59
8:05
+0:06
21M
21.00 mi13:38:112:46:277:568:14
8:14
+0:09
35K
21.75 mi13:44:032:52:197:555:52
7:51
-0:23
23M
23.00 mi13:54:103:02:267:5610:07
8:05
+0:14
24M
24.00 mi14:01:573:10:137:567:47
7:47
-0:18
40K
24.85 mi14:08:413:16:577:556:44
7:53
+0:06
25.2M
25.20 mi14:11:303:19:467:562:49
8:10
+0:17
Finish
26.22 mi14:18:543:27:107:547:24
7:16
-0:54

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

7:16 /mi

Average Pace

7:54 /mi

Slowest Pace

8:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:01

84% of race

Time at Steady Pace

32:09

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi11:16:2824:447:5824:44
7:58
#13733
10K
6.21 mi11:40:3748:537:5224:09
7:46
#13325
15K
9.32 mi12:05:001:13:167:5224:23
7:51
#13228
20K
12.43 mi12:29:321:37:487:5224:32
7:54
#13039
Half
13.11 mi12:34:531:43:097:525:21
7:50
#13024
25K
15.53 mi12:54:112:02:277:5319:18
7:58
#12902
30K
18.64 mi13:18:582:27:147:5424:47
7:59
#12443
20M
20.00 mi13:29:572:38:137:5510:59
8:05
#12301
21M
21.00 mi13:38:112:46:277:568:14
8:14
#12065
35K
21.75 mi13:44:032:52:197:555:52
7:51
#12016
23M
23.00 mi13:54:103:02:267:5610:07
8:05
#11905
24M
24.00 mi14:01:573:10:137:567:47
7:47
#11794
40K
24.85 mi14:08:413:16:577:556:44
7:53
#11682
25.2M
25.20 mi14:11:303:19:467:562:49
8:10
#11593
Finish
26.22 mi14:18:543:27:107:547:24
7:16
#11347
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi137333860386013110(Top 49%)3543(Top 31%)3543(Top 189%)
10K6.21 mi3.10 mi13325+4083639+2213639+22112898(Top 48%)3371(Top 30%)3371(Top 179%)
15K9.32 mi3.11 mi13228+973591+483591+4813110(Top 49%)3543(Top 31%)3543(Top 189%)
20K12.43 mi3.11 mi13039+1893507+843507+8412587(Top 47%)3304(Top 29%)3304(Top 176%)
Half13.11 mi0.68 mi13024+153498+93498+913114(Top 49%)3548(Top 31%)3548(Top 189%)
25K15.53 mi2.42 mi12902+1223452+463452+4612406(Top 47%)3306(Top 29%)3306(Top 176%)
30K18.64 mi3.11 mi12443+4593219+2333219+23310721(Top 40%)2506(Top 22%)2506(Top 133%)
20M20.00 mi1.36 mi12301+1423161+583161+5810908(Top 41%)2688(Top 24%)2688(Top 143%)
21M21.00 mi1.00 mi12065+2363045+1163045+1168834(Top 33%)1861(Top 16%)1861(Top 99%)
35K21.75 mi0.75 mi12016+493033+123033+1210996(Top 41%)2873(Top 25%)2873(Top 153%)
23M23.00 mi1.25 mi11905+1112998+352998+3510335(Top 39%)2679(Top 23%)2679(Top 143%)
24M24.00 mi1.00 mi11794+1112947+512947+519698(Top 36%)2447(Top 21%)2447(Top 130%)
40K24.85 mi0.85 mi11682+1122911+362911+369212(Top 35%)2274(Top 20%)2274(Top 121%)
25.2M25.20 mi0.35 mi11593+892872+392872+397612(Top 29%)1682(Top 15%)1682(Top 90%)
Finish26.22 mi1.02 mi11347+2462764+1082764+1086892(Top 26%)1397(Top 12%)1397(Top 74%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13110

Females

3543

F40-44

3543

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12898

Females

3371

F40-44

3371

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13110

Females

3543

F40-44

3543

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12587

Females

3304

F40-44

3304

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13114

Females

3548

F40-44

3548

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

12406

Females

3306

F40-44

3306

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10721

Females

2506

F40-44

2506

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10908

Females

2688

F40-44

2688

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

8834

Females

1861

F40-44

1861

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

10996

Females

2873

F40-44

2873

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

10335

Females

2679

F40-44

2679

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9698

Females

2447

F40-44

2447

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9212

Females

2274

F40-44

2274

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7612

Females

1682

F40-44

1682

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2story building
+22ft-21ft

Overall

6892

Females

1397

F40-44

1397

Passing Analysis

Category:
Athletes Passed
3038
Passed By
652
Net Change
+2386
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13733
5K → 10K552144+408#13733#13325
10K → 15K254157+97#13325#13228
15K → 20K27485+189#13228#13039
20K → Half4025+15#13039#13024
Half → 25K20179+122#13024#12902
25K → 30K48829+459#12902#12443
30K → 20M17129+142#12443#12301
20M → 21M2448+236#12301#12065
21M → 35K6920+49#12065#12016
35K → 23M14736+111#12016#11905
23M → 24M13423+111#11905#11794
24M → 40K12513+112#11794#11682
40K → 25.2M923+89#11682#11593
25.2M → Finish2471+246#11593#11347
TOTALS3038652+2386
📊

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