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BOSTON MARATHON 2023

Kathryn Breuckman

Bib: 12628•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 14%
Division (F18-39)
#0 / 4884
Top 26%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:19
Rank: #9685
Start → 5K
23:19 | 7:30/mi
10K· 6.21 mi
46:38
Rank: #10078 (-393)
5K → 10K
23:19 | 7:30/mi
15K· 9.32 mi
1:09:56
Rank: #10096 (-18)
10K → 15K
23:18 | 7:30/mi
20K· 12.43 mi
1:33:20
Rank: #9922 (+174)
15K → 20K
23:24 | 7:32/mi
Half· 13.11 mi
1:38:31
Rank: #9976 (-54)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:57:09
Rank: #9989 (-13)
Half → 25K
18:38 | 7:41/mi
30K· 18.64 mi
2:21:17
Rank: #9815 (+174)
25K → 30K
24:08 | 7:46/mi
20M
2:32:33
Rank: #9955 (-140)
30K → 20M
11:16 | 8:17/mi
21M
2:40:39
Rank: #9804 (+151)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:46:18
Rank: #9765 (+39)
21M → 35K
5:39 | 7:33/mi
23M
2:55:47
Rank: #9549 (+216)
35K → 23M
9:29 | 7:34/mi
24M
3:03:06
Rank: #9382 (+167)
23M → 24M
7:19 | 7:19/mi
40K· 24.85 mi
3:09:30
Rank: #9235 (+147)
24M → 40K
6:24 | 7:29/mi
25.2M
3:12:12
Rank: #9171 (+64)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
3:19:14
Rank: #8950 (+221)
25.2M → Finish
7:02 | 6:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:31
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:40:43
Pace7:41 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2023:197:3023:19
7:30
-
10K
6.21 mi11:14:3946:387:3023:19
7:30
0:00
15K
9.32 mi11:37:571:09:567:3023:18
7:30
0:00
20K
12.43 mi12:01:211:33:207:3123:24
7:32
+0:02
Half
13.11 mi12:06:321:38:317:315:11
7:36
+0:04
25K
15.53 mi12:25:101:57:097:3218:38
7:41
+0:05
30K
18.64 mi12:49:182:21:177:3524:08
7:46
+0:05
20M
20.00 mi13:00:342:32:337:3811:16
8:17
+0:31
21M
21.00 mi13:08:402:40:397:398:06
8:06
-0:11
35K
21.75 mi13:14:192:46:187:395:39
7:33
-0:33
23M
23.00 mi13:23:482:55:477:399:29
7:34
+0:01
24M
24.00 mi13:31:073:03:067:387:19
7:19
-0:15
40K
24.85 mi13:37:313:09:307:376:24
7:29
+0:10
25.2M
25.20 mi13:40:133:12:127:382:42
7:50
+0:21
Finish
26.22 mi13:47:153:19:147:367:02
6:54
-0:56

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

6:54 /mi

Average Pace

7:36 /mi

Slowest Pace

8:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

14:21

7% of race

Time at Steady Pace

2:18:41

70% of race

Time at Slower Pace

46:12

23% of race

Average Pace: 7:36 /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 mi10:51:2023:197:3023:19
7:30
#9685
10K
6.21 mi11:14:3946:387:3023:19
7:30
#10078
15K
9.32 mi11:37:571:09:567:3023:18
7:30
#10096
20K
12.43 mi12:01:211:33:207:3123:24
7:32
#9922
Half
13.11 mi12:06:321:38:317:315:11
7:36
#9976
25K
15.53 mi12:25:101:57:097:3218:38
7:41
#9989
30K
18.64 mi12:49:182:21:177:3524:08
7:46
#9815
20M
20.00 mi13:00:342:32:337:3811:16
8:17
#9955
21M
21.00 mi13:08:402:40:397:398:06
8:06
#9804
35K
21.75 mi13:14:192:46:187:395:39
7:33
#9765
23M
23.00 mi13:23:482:55:477:399:29
7:34
#9549
24M
24.00 mi13:31:073:03:067:387:19
7:19
#9382
40K
24.85 mi13:37:313:09:307:376:24
7:29
#9235
25.2M
25.20 mi13:40:133:12:127:382:42
7:50
#9171
Finish
26.22 mi13:47:153:19:147:367:02
6:54
#8950
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi96851697169710177(Top 38%)1921(Top 17%)1921(Top 39%)
10K6.21 mi3.10 mi10078-3931874-1771874-17710490(Top 39%)2047(Top 18%)2047(Top 42%)
15K9.32 mi3.11 mi10096-181862+121862+1210177(Top 38%)1921(Top 17%)1921(Top 39%)
20K12.43 mi3.11 mi9922+1741805+571805+579576(Top 36%)1721(Top 15%)1721(Top 35%)
Half13.11 mi0.68 mi9976-541827-221827-2211008(Top 41%)2350(Top 21%)2350(Top 48%)
25K15.53 mi2.42 mi9989-131852-251852-2510197(Top 38%)2080(Top 18%)2080(Top 43%)
30K18.64 mi3.11 mi9815+1741807+451807+459112(Top 34%)1750(Top 15%)1750(Top 36%)
20M20.00 mi1.36 mi9955-1401898-911898-9112300(Top 46%)3451(Top 30%)3451(Top 71%)
21M21.00 mi1.00 mi9804+1511854+441854+448034(Top 30%)1532(Top 13%)1532(Top 31%)
35K21.75 mi0.75 mi9765+391852+21852+28951(Top 34%)1888(Top 17%)1888(Top 39%)
23M23.00 mi1.25 mi9549+2161786+661786+666949(Top 26%)1161(Top 10%)1161(Top 24%)
24M24.00 mi1.00 mi9382+1671752+341752+346530(Top 25%)1091(Top 10%)1091(Top 22%)
40K24.85 mi0.85 mi9235+1471713+391713+396677(Top 25%)1243(Top 11%)1243(Top 25%)
25.2M25.20 mi0.35 mi9171+641700+131700+135641(Top 21%)954(Top 8%)954(Top 20%)
Finish26.22 mi1.02 mi8950+2211620+801620+804686(Top 18%)638(Top 6%)638(Top 13%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10177

Females

1921

F18-39

1921

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10490

Females

2047

F18-39

2047

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10177

Females

1921

F18-39

1921

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9576

Females

1721

F18-39

1721

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11008

Females

2350

F18-39

2350

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10197

Females

2080

F18-39

2080

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9112

Females

1750

F18-39

1750

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12300

Females

3451

F18-39

3451

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8034

Females

1532

F18-39

1532

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

8951

Females

1888

F18-39

1888

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

6949

Females

1161

F18-39

1161

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6530

Females

1091

F18-39

1091

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6677

Females

1243

F18-39

1243

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5641

Females

954

F18-39

954

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4686

Females

638

F18-39

638

Passing Analysis

Category:
Athletes Passed
2107*
Passed By
1370
Net Change
+735
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9685
5K → 10K162554-393#9685#10078
10K → 15K175192-18#10078#10096
15K → 20K266*92+174#10096#9922
20K → Half862-54#9922#9976
Half → 25K116129-13#9976#9989
25K → 30K246*72+174#9989#9815
30K → 20M57197-140#9815#9955
20M → 21M16918+151#9955#9804
21M → 35K6021+39#9804#9765
35K → 23M22711+216#9765#9549
23M → 24M1747+167#9549#9382
24M → 40K15710+147#9382#9235
40K → 25.2M662+64#9235#9171
25.2M → Finish2243+221#9171#8950
TOTALS2107*1370+735

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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