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BOSTON MARATHON 2023

Buffy Kuiper

Bib: 27149•F

AK

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:47
Rank: #22343
Start → 5K
29:47 | 9:35/mi
10K· 6.21 mi
57:38
Rank: #21656 (+687)
5K → 10K
27:51 | 8:58/mi
15K· 9.32 mi
1:26:53
Rank: #21747 (-91)
10K → 15K
29:15 | 9:25/mi
20K· 12.43 mi
1:57:21
Rank: #21926 (-179)
15K → 20K
30:28 | 9:48/mi
Half· 13.11 mi
2:03:56
Rank: #21954 (-28)
20K → Half
6:35 | 9:39/mi
25K· 15.53 mi
2:29:33
Rank: #22285 (-331)
Half → 25K
25:37 | 10:34/mi
30K· 18.64 mi
3:03:16
Rank: #22399 (-114)
25K → 30K
33:43 | 10:51/mi
20M
3:18:30
Rank: #22461 (-62)
30K → 20M
15:14 | 11:13/mi
21M
3:30:36
Rank: #22491 (-30)
20M → 21M
12:06 | 12:06/mi
35K· 21.75 mi
3:38:09
Rank: #22450 (+41)
21M → 35K
7:33 | 10:06/mi
23M
3:52:30
Rank: #22503 (-53)
35K → 23M
14:21 | 11:28/mi
24M
4:03:16
Rank: #22505 (-2)
23M → 24M
10:46 | 10:46/mi
40K· 24.85 mi
4:13:57
Rank: #22615 (-110)
24M → 40K
10:41 | 12:30/mi
25.2M
4:17:59
Rank: #22598 (+17)
40K → 25.2M
4:02 | 11:42/mi
Finish· 26.22 mi
4:28:27
Rank: #22595 (+3)
25.2M → Finish
10:28 | 10:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:56
Pace9:27 /mi
2nd Half
Distance13.11 mi
Time2:24:31
Pace11:01 /mi
📊Positive Split: 16.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:2129:479:3529:47
9:35
-
10K
6.21 mi12:14:1257:389:1727:51
8:58
-0:37
15K
9.32 mi12:43:271:26:539:1929:15
9:25
+0:27
20K
12.43 mi13:13:551:57:219:2730:28
9:48
+0:23
Half
13.11 mi13:20:302:03:569:276:35
9:39
-0:09
25K
15.53 mi13:46:072:29:339:3825:37
10:34
+0:55
30K
18.64 mi14:19:503:03:169:5033:43
10:51
+0:17
20M
20.00 mi14:35:043:18:309:5515:14
11:13
+0:22
21M
21.00 mi14:47:103:30:3610:0212:06
12:06
+0:53
35K
21.75 mi14:54:433:38:0910:027:33
10:06
-2:00
23M
23.00 mi15:09:043:52:3010:0714:21
11:28
+1:22
24M
24.00 mi15:19:504:03:1610:0810:46
10:46
-0:42
40K
24.85 mi15:30:314:13:5710:1310:41
12:30
+1:44
25.2M
25.20 mi15:34:334:17:5910:144:02
11:42
-0:48
Finish
26.22 mi15:45:014:28:2710:1510:28
10:16
-1:26

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

8:58 /mi

Average Pace

10:15 /mi

Slowest Pace

12:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:56

46% of race

Time at Steady Pace

1:28:07

33% of race

Time at Slower Pace

56:24

21% of race

Average Pace: 10:14 /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 mi11:46:2129:479:3529:47
9:35
#22343
10K
6.21 mi12:14:1257:389:1727:51
8:58
#21656
15K
9.32 mi12:43:271:26:539:1929:15
9:25
#21747
20K
12.43 mi13:13:551:57:219:2730:28
9:48
#21926
Half
13.11 mi13:20:302:03:569:276:35
9:39
#21954
25K
15.53 mi13:46:072:29:339:3825:37
10:34
#22285
30K
18.64 mi14:19:503:03:169:5033:43
10:51
#22399
20M
20.00 mi14:35:043:18:309:5515:14
11:13
#22461
21M
21.00 mi14:47:103:30:3610:0212:06
12:06
#22491
35K
21.75 mi14:54:433:38:0910:027:33
10:06
#22450
23M
23.00 mi15:09:043:52:3010:0714:21
11:28
#22503
24M
24.00 mi15:19:504:03:1610:0810:46
10:46
#22505
40K
24.85 mi15:30:314:13:5710:1310:41
12:30
#22615
25.2M
25.20 mi15:34:334:17:5910:144:02
11:42
#22598
Finish
26.22 mi15:45:014:28:2710:1510:28
10:16
#22595
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi223439049904922010(Top 83%)8795(Top 77%)8795(Top 468%)
10K6.21 mi3.10 mi21656+6878667+3828667+38220737(Top 78%)8116(Top 71%)8116(Top 432%)
15K9.32 mi3.11 mi21747-918698-318698-3122010(Top 83%)8795(Top 77%)8795(Top 468%)
20K12.43 mi3.11 mi21926-1798792-948792-9422430(Top 84%)9042(Top 79%)9042(Top 481%)
Half13.11 mi0.68 mi21954-288804-128804-1222537(Top 85%)9100(Top 80%)9100(Top 485%)
25K15.53 mi2.42 mi22285-3318997-1938997-19323298(Top 88%)9555(Top 84%)9555(Top 509%)
30K18.64 mi3.11 mi22399-1149061-649061-6422881(Top 86%)9398(Top 82%)9398(Top 500%)
20M20.00 mi1.36 mi22461-629112-519112-5123034(Top 87%)9528(Top 83%)9528(Top 507%)
21M21.00 mi1.00 mi22491-309139-279139-2722910(Top 86%)9502(Top 83%)9502(Top 506%)
35K21.75 mi0.75 mi22450+419119+209119+2021553(Top 81%)8805(Top 77%)8805(Top 469%)
23M23.00 mi1.25 mi22503-539156-379156-3723190(Top 87%)9688(Top 85%)9688(Top 516%)
24M24.00 mi1.00 mi22505-29163-79163-722612(Top 85%)9426(Top 83%)9426(Top 502%)
40K24.85 mi0.85 mi22615-1109238-759238-7524440(Top 92%)10409(Top 91%)10409(Top 554%)
25.2M25.20 mi0.35 mi22598+179230+89230+821975(Top 83%)9118(Top 80%)9118(Top 486%)
Finish26.22 mi1.02 mi22595+39239-99239-922478(Top 84%)9373(Top 82%)9373(Top 499%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

22010

Females

8795

F40-44

8795

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

20737

Females

8116

F40-44

8116

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

22010

Females

8795

F40-44

8795

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

22430

Females

9042

F40-44

9042

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

22537

Females

9100

F40-44

9100

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23298

Females

9555

F40-44

9555

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22881

Females

9398

F40-44

9398

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

23034

Females

9528

F40-44

9528

20M→21M

20.0 - 21.0 mi

Top 86%
×8stories
+106ft-24ft

Overall

22910

Females

9502

F40-44

9502

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21553

Females

8805

F40-44

8805

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

23190

Females

9688

F40-44

9688

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22612

Females

9426

F40-44

9426

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

24440

Females

10409

F40-44

10409

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

21975

Females

9118

F40-44

9118

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

22478

Females

9373

F40-44

9373

Passing Analysis

Category:
Athletes Passed
1367
Passed By
1619
Net Change
-252
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22343
5K → 10K74659+687#22343#21656
10K → 15K127218-91#21656#21747
15K → 20K73252-179#21747#21926
20K → Half1644-28#21926#21954
Half → 25K29360-331#21954#22285
25K → 30K84198-114#22285#22399
30K → 20M3597-62#22399#22461
20M → 21M5080-30#22461#22491
21M → 35K5817+41#22491#22450
35K → 23M3992-53#22450#22503
23M → 24M3638-2#22503#22505
24M → 40K8118-110#22505#22615
40K → 25.2M236+17#22615#22598
25.2M → Finish4340+3#22598#22595
TOTALS13671619-252
📊

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