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BOSTON MARATHON 2023

Kristen Buck

Bib: 22081•F

PA

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

Start
0:00:00
Race begins
5K· 3.11 mi
27:10
Rank: #19151
Start → 5K
8:45/mi
27:10 split
10K· 6.21 mi
54:03
Rank: #19100 (+51)
5K → 10K
8:39/mi
26:53 split
15K· 9.32 mi
1:21:12
Rank: #19112 (-12)
10K → 15K
8:44/mi
27:09 split
20K· 12.43 mi
1:48:23
Rank: #18907 (+205)
15K → 20K
8:45/mi
27:11 split
Half· 13.11 mi
1:54:20
Rank: #18923 (-16)
20K → Half
8:43/mi
5:57 split
25K· 15.53 mi
2:15:20
Rank: #18644 (+279)
Half → 25K
8:40/mi
21:00 split
30K· 18.64 mi
2:43:46
Rank: #18490 (+154)
25K → 30K
9:09/mi
28:26 split
20M
2:56:06
Rank: #18358 (+132)
30K → 20M
9:05/mi
12:20 split
21M
3:06:04
Rank: #18337 (+21)
20M → 21M
9:58/mi
9:58 split
35K· 21.75 mi
3:12:43
Rank: #18278 (+59)
21M → 35K
8:53/mi
6:39 split
23M
3:23:58
Rank: #18144 (+134)
35K → 23M
8:59/mi
11:15 split
24M
3:32:37
Rank: #18027 (+117)
23M → 24M
8:39/mi
8:39 split
40K· 24.85 mi
3:40:06
Rank: #17925 (+102)
24M → 40K
8:45/mi
7:29 split
25.2M
3:43:27
Rank: #17890 (+35)
40K → 25.2M
9:43/mi
3:21 split
Finish· 26.22 mi
3:52:28
Rank: #17877 (+13)
25.2M → Finish
8:51/mi
9:01 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:20
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time1:58:08
Pace9:01 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0527:108:4527:10
8:45
-
10K
6.21 mi11:47:5854:038:4226:53
8:39
-0:06
15K
9.32 mi12:15:071:21:128:4327:09
8:44
+0:05
20K
12.43 mi12:42:181:48:238:4327:11
8:45
+0:01
Half
13.11 mi12:48:151:54:208:435:57
8:43
-0:02
25K
15.53 mi13:09:152:15:208:4321:00
8:40
-0:03
30K
18.64 mi13:37:412:43:468:4728:26
9:09
+0:29
20M
20.00 mi13:50:012:56:068:4812:20
9:05
-0:04
21M
21.00 mi13:59:593:06:048:529:58
9:58
+0:53
35K
21.75 mi14:06:383:12:438:526:39
8:53
-1:05
23M
23.00 mi14:17:533:23:588:5211:15
8:59
+0:06
24M
24.00 mi14:26:323:32:378:528:39
8:39
-0:20
40K
24.85 mi14:34:013:40:068:517:29
8:45
+0:06
25.2M
25.20 mi14:37:223:43:278:523:21
9:43
+0:58
Finish
26.22 mi14:46:233:52:288:529:01
8:51
-0:52

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

8:39 /mi

Average Pace

8:52 /mi

Slowest Pace

9:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:39:09

94% of race

Time at Steady Pace

13:19

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:52 /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 mi11:21:0527:108:4527:10
8:45
#19151
10K
6.21 mi11:47:5854:038:4226:53
8:39
#19100
15K
9.32 mi12:15:071:21:128:4327:09
8:44
#19112
20K
12.43 mi12:42:181:48:238:4327:11
8:45
#18907
Half
13.11 mi12:48:151:54:208:435:57
8:43
#18923
25K
15.53 mi13:09:152:15:208:4321:00
8:40
#18644
30K
18.64 mi13:37:412:43:468:4728:26
9:09
#18490
20M
20.00 mi13:50:012:56:068:4812:20
9:05
#18358
21M
21.00 mi13:59:593:06:048:529:58
9:58
#18337
35K
21.75 mi14:06:383:12:438:526:39
8:53
#18278
23M
23.00 mi14:17:533:23:588:5211:15
8:59
#18144
24M
24.00 mi14:26:323:32:378:528:39
8:39
#18027
40K
24.85 mi14:34:013:40:068:517:29
8:45
#17925
25.2M
25.20 mi14:37:223:43:278:523:21
9:43
#17890
Finish
26.22 mi14:46:233:52:288:529:01
8:51
#17877
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi191517292729219184(Top 72%)7207(Top 63%)7207(Top 397%)
10K6.21 mi3.10 mi19100+517214+787214+7819149(Top 72%)7170(Top 63%)7170(Top 395%)
15K9.32 mi3.11 mi19112-127198+167198+1619184(Top 72%)7207(Top 63%)7207(Top 397%)
20K12.43 mi3.11 mi18907+2057067+1317067+13118420(Top 69%)6745(Top 59%)6745(Top 371%)
Half13.11 mi0.68 mi18923-167075-87075-819077(Top 72%)7119(Top 62%)7119(Top 392%)
25K15.53 mi2.42 mi18644+2796922+1536922+15317184(Top 65%)6112(Top 54%)6112(Top 336%)
30K18.64 mi3.11 mi18490+1546857+656857+6517943(Top 67%)6618(Top 58%)6618(Top 364%)
20M20.00 mi1.36 mi18358+1326791+666791+6616951(Top 64%)6131(Top 54%)6131(Top 337%)
21M21.00 mi1.00 mi18337+216789+26789+217922(Top 67%)6711(Top 59%)6711(Top 369%)
35K21.75 mi0.75 mi18278+596765+246765+2417416(Top 65%)6509(Top 57%)6509(Top 358%)
23M23.00 mi1.25 mi18144+1346698+676698+6716030(Top 60%)5769(Top 51%)5769(Top 318%)
24M24.00 mi1.00 mi18027+1176645+536645+5315413(Top 58%)5494(Top 48%)5494(Top 302%)
40K24.85 mi0.85 mi17925+1026591+546591+5414873(Top 56%)5235(Top 46%)5235(Top 288%)
25.2M25.20 mi0.35 mi17890+356567+246567+2416258(Top 61%)6025(Top 53%)6025(Top 332%)
Finish26.22 mi1.02 mi17877+136573-66573-617286(Top 65%)6527(Top 57%)6527(Top 359%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19184

Females

7207

F45-49

7207

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19149

Females

7170

F45-49

7170

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19184

Females

7207

F45-49

7207

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18420

Females

6745

F45-49

6745

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19077

Females

7119

F45-49

7119

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17184

Females

6112

F45-49

6112

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17943

Females

6618

F45-49

6618

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

16951

Females

6131

F45-49

6131

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

17922

Females

6711

F45-49

6711

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17416

Females

6509

F45-49

6509

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

16030

Females

5769

F45-49

5769

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

15413

Females

5494

F45-49

5494

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14873

Females

5235

F45-49

5235

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16258

Females

6025

F45-49

6025

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17286

Females

6527

F45-49

6527

Passing Analysis

Category:
Athletes Passed
2200
Passed By
926
Net Change
+1274
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19151
5K → 10K373322+51#19151#19100
10K → 15K170182-12#19100#19112
15K → 20K26762+205#19112#18907
20K → Half2642-16#18907#18923
Half → 25K29011+279#18923#18644
25K → 30K24288+154#18644#18490
30K → 20M16432+132#18490#18358
20M → 21M9877+21#18358#18337
21M → 35K689+59#18337#18278
35K → 23M15521+134#18278#18144
23M → 24M13316+117#18144#18027
24M → 40K1119+102#18027#17925
40K → 25.2M449+35#17925#17890
25.2M → Finish5946+13#17890#17877
TOTALS2200926+1274
📊

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