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BOSTON MARATHON 2023

Kristy Buchanan

Bib: 21542•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
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
8:39/mi
26:53
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
53:44
↑ 79↓ 1380.4%
15K· 9.32 mi
8:38/mi
1:20:34
↑ 67↓ 78
20K· 12.43 mi
8:45/mi
1:47:46
↑ 106↓ 860.1%
Half· 13.11 mi
8:45/mi
1:53:44
↑ 19↓ 370.5%
25K· 15.53 mi
8:49/mi
2:15:06
↑ 66↓ 880.2%
30K· 18.64 mi
9:13/mi
2:43:44
↑ 181↓ 1480.2%
20M
9:27/mi
2:56:35
↑ 64↓ 500.2%
21M
10:05/mi
3:06:40
↑ 106↓ 241.6%
35K· 21.75 mi
9:55/mi
3:14:05
↑ 17↓ 861.7%
23M
10:18/mi
3:26:59
↑ 23↓ 630.6%
24M
10:13/mi
3:37:12
↓ 821.3%
40K· 24.85 mi
9:33/mi
3:45:22
↓ 200.3%
25.2M
9:49/mi
3:48:45
↑ 13↓ 160.2%
Finish· 26.22 mi
8:40/mi
3:57:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:44
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:03:51
Pace9:27 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5826:538:3926:53
8:39
-
10K
6.21 mi11:46:4953:448:3926:51
8:39
0:00
15K
9.32 mi12:13:391:20:348:3926:50
8:38
-0:01
20K
12.43 mi12:40:511:47:468:4027:12
8:45
+0:07
Half
13.11 mi12:46:491:53:448:415:58
8:45
0:00
25K
15.53 mi13:08:112:15:068:4221:22
8:49
+0:04
30K
18.64 mi13:36:492:43:448:4728:38
9:13
+0:24
20M
20.00 mi13:49:402:56:358:5012:51
9:27
+0:14
21M
21.00 mi13:59:453:06:408:5310:05
10:05
+0:38
35K
21.75 mi14:07:103:14:058:557:25
9:55
-0:10
23M
23.00 mi14:20:043:26:599:0012:54
10:18
+0:23
24M
24.00 mi14:30:173:37:129:0310:13
10:13
-0:05
40K
24.85 mi14:38:273:45:229:048:10
9:33
-0:40
25.2M
25.20 mi14:41:503:48:459:053:23
9:49
+0:16
Finish
26.22 mi14:50:403:57:359:048:50
8:40
-1:09

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

8:38 /mi

Average Pace

9:04 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:25

78% of race

Time at Steady Pace

29:03

12% of race

Time at Slower Pace

23:07

10% of race

Average Pace: 9:04 /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 mi11:19:5826:538:3926:53
8:39
#18600
10K
6.21 mi11:46:4953:448:3926:51
8:39
#18789
15K
9.32 mi12:13:391:20:348:3926:50
8:38
#18719
20K
12.43 mi12:40:511:47:468:4027:12
8:45
#18655
Half
13.11 mi12:46:491:53:448:415:58
8:45
#18671
25K
15.53 mi13:08:112:15:068:4221:22
8:49
#18557
30K
18.64 mi13:36:492:43:448:4728:38
9:13
#18482
20M
20.00 mi13:49:402:56:358:5012:51
9:27
#18494
21M
21.00 mi13:59:453:06:408:5310:05
10:05
#18482
35K
21.75 mi14:07:103:14:058:557:25
9:55
#18612
23M
23.00 mi14:20:043:26:599:0012:54
10:18
#18829
24M
24.00 mi14:30:173:37:129:0310:13
10:13
#19007
40K
24.85 mi14:38:273:45:229:048:10
9:33
#18988
25.2M
25.20 mi14:41:503:48:459:053:23
9:49
#18952
Finish
26.22 mi14:50:403:57:359:048:50
8:40
#18874
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi186006936693618671(Top 70%)6904(Top 60%)6904(Top 380%)
10K6.21 mi3.10 mi18789-1897005-697005-6919107(Top 72%)7146(Top 63%)7146(Top 393%)
15K9.32 mi3.11 mi18719+706954+516954+5118671(Top 70%)6904(Top 60%)6904(Top 380%)
20K12.43 mi3.11 mi18655+646906+486906+4818452(Top 69%)6769(Top 59%)6769(Top 373%)
Half13.11 mi0.68 mi18671-166919-136919-1319233(Top 72%)7224(Top 63%)7224(Top 398%)
25K15.53 mi2.42 mi18557+1146866+536866+5318042(Top 68%)6577(Top 58%)6577(Top 362%)
30K18.64 mi3.11 mi18482+756855+116855+1118240(Top 69%)6786(Top 59%)6786(Top 373%)
20M20.00 mi1.36 mi18494-126864-96864-918699(Top 70%)7131(Top 62%)7131(Top 392%)
21M21.00 mi1.00 mi18482+126870-66870-618343(Top 69%)6962(Top 61%)6962(Top 383%)
35K21.75 mi0.75 mi18612-1306941-716941-7121044(Top 79%)8506(Top 74%)8506(Top 468%)
23M23.00 mi1.25 mi18829-2177092-1517092-15120835(Top 78%)8424(Top 74%)8424(Top 464%)
24M24.00 mi1.00 mi19007-1787202-1107202-11021372(Top 80%)8766(Top 77%)8766(Top 482%)
40K24.85 mi0.85 mi18988+197193+97193+918531(Top 70%)7235(Top 63%)7235(Top 398%)
25.2M25.20 mi0.35 mi18952+367178+157178+1516674(Top 63%)6263(Top 55%)6263(Top 345%)
Finish26.22 mi1.02 mi18874+787137+417137+4116362(Top 61%)6031(Top 53%)6031(Top 332%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

18671

Females

6904

F45-49

6904

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19107

Females

7146

F45-49

7146

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

18671

Females

6904

F45-49

6904

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18452

Females

6769

F45-49

6769

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19233

Females

7224

F45-49

7224

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

18042

Females

6577

F45-49

6577

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18240

Females

6786

F45-49

6786

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

18699

Females

7131

F45-49

7131

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18343

Females

6962

F45-49

6962

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

21044

Females

8506

F45-49

8506

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20835

Females

8424

F45-49

8424

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

21372

Females

8766

F45-49

8766

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18531

Females

7235

F45-49

7235

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16674

Females

6263

F45-49

6263

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

16362

Females

6031

F45-49

6031

Passing Analysis

Category:
Athletes Passed
1508
Passed By
1782
Net Change
-274
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18600
5K → 10K250439-189#18600#18789
10K → 15K219149+70#18789#18719
15K → 20K191127+64#18719#18655
20K → Half2339-16#18655#18671
Half → 25K18167+114#18671#18557
25K → 30K206131+75#18557#18482
30K → 20M8597-12#18482#18494
20M → 21M9078+12#18494#18482
21M → 35K16146-130#18482#18612
35K → 23M28245-217#18612#18829
23M → 24M22200-178#18829#19007
24M → 40K5940+19#19007#18988
40K → 25.2M448+36#18988#18952
25.2M → Finish9416+78#18952#18874
TOTALS15081782-274
📊

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