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BOSTON MARATHON 2023

Stacy Butler

Bib: 17903•F

TX

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 45%
Division (F18-39)
#0 / 4884
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
8:21/mi
25:57
↑ 97↓ 3451.5%
10K· 6.21 mi
8:22/mi
51:58
↑ 79↓ 1380.4%
15K· 9.32 mi
8:17/mi
1:17:43
↑ 67↓ 78
20K· 12.43 mi
8:17/mi
1:43:26
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:49:00
↑ 19↓ 370.5%
25K· 15.53 mi
8:19/mi
2:09:09
↑ 66↓ 880.2%
30K· 18.64 mi
8:40/mi
2:36:05
↑ 181↓ 1480.2%
20M
8:43/mi
2:47:56
↑ 64↓ 500.2%
21M
9:14/mi
2:57:10
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
3:03:25
↑ 17↓ 861.7%
23M
8:42/mi
3:14:18
↑ 23↓ 630.6%
24M
8:28/mi
3:22:46
↓ 821.3%
40K· 24.85 mi
8:46/mi
3:30:16
↓ 200.3%
25.2M
9:20/mi
3:33:29
↑ 13↓ 160.2%
Finish· 26.22 mi
8:24/mi
3:42:03
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:00
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:53:03
Pace8:37 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4625:578:2125:57
8:21
-
10K
6.21 mi11:44:4751:588:2226:01
8:22
+0:01
15K
9.32 mi12:10:321:17:438:2025:45
8:17
-0:05
20K
12.43 mi12:36:151:43:268:1925:43
8:17
0:00
Half
13.11 mi12:41:491:49:008:195:34
8:10
-0:07
25K
15.53 mi13:01:582:09:098:1920:09
8:19
+0:09
30K
18.64 mi13:28:542:36:058:2226:56
8:40
+0:21
20M
20.00 mi13:40:452:47:568:2411:51
8:43
+0:03
21M
21.00 mi13:49:592:57:108:269:14
9:14
+0:31
35K
21.75 mi13:56:143:03:258:266:15
8:21
-0:53
23M
23.00 mi14:07:073:14:188:2710:53
8:42
+0:21
24M
24.00 mi14:15:353:22:468:278:28
8:28
-0:14
40K
24.85 mi14:23:053:30:168:287:30
8:46
+0:18
25.2M
25.20 mi14:26:183:33:298:283:13
9:20
+0:34
Finish
26.22 mi14:34:523:42:038:298:34
8:24
-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

8:10 /mi

Average Pace

8:29 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:29:36

94% of race

Time at Steady Pace

12:27

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:28 /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 mi11:18:4625:578:2125:57
8:21
#16524
10K
6.21 mi11:44:4751:588:2226:01
8:22
#16944
15K
9.32 mi12:10:321:17:438:2025:45
8:17
#16776
20K
12.43 mi12:36:151:43:268:1925:43
8:17
#16446
Half
13.11 mi12:41:491:49:008:195:34
8:10
#16401
25K
15.53 mi13:01:582:09:098:1920:09
8:19
#16134
30K
18.64 mi13:28:542:36:058:2226:56
8:40
#15958
20M
20.00 mi13:40:452:47:568:2411:51
8:43
#15884
21M
21.00 mi13:49:592:57:108:269:14
9:14
#15772
35K
21.75 mi13:56:143:03:258:266:15
8:21
#15710
23M
23.00 mi14:07:073:14:188:2710:53
8:42
#15612
24M
24.00 mi14:15:353:22:468:278:28
8:28
#15541
40K
24.85 mi14:23:053:30:168:287:30
8:46
#15512
25.2M
25.20 mi14:26:183:33:298:283:13
9:20
#15498
Finish
26.22 mi14:34:523:42:038:298:34
8:24
#15459
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi165245617561716475(Top 62%)5579(Top 49%)5579(Top 114%)
10K6.21 mi3.10 mi16944-4205878-2615878-26117405(Top 65%)6125(Top 54%)6125(Top 125%)
15K9.32 mi3.11 mi16776+1685780+985780+9816475(Top 62%)5579(Top 49%)5579(Top 114%)
20K12.43 mi3.11 mi16446+3305571+2095571+20915480(Top 58%)5019(Top 44%)5019(Top 103%)
Half13.11 mi0.68 mi16401+455552+195552+1915551(Top 58%)5023(Top 44%)5023(Top 103%)
25K15.53 mi2.42 mi16134+2675416+1365416+13615042(Top 57%)4870(Top 43%)4870(Top 100%)
30K18.64 mi3.11 mi15958+1765343+735343+7315328(Top 58%)5128(Top 45%)5128(Top 105%)
20M20.00 mi1.36 mi15884+745332+115332+1115007(Top 56%)4996(Top 44%)4996(Top 102%)
21M21.00 mi1.00 mi15772+1125284+485284+4814661(Top 55%)4854(Top 42%)4854(Top 99%)
35K21.75 mi0.75 mi15710+625261+235261+2314483(Top 54%)4835(Top 42%)4835(Top 99%)
23M23.00 mi1.25 mi15612+985233+285233+2814355(Top 54%)4828(Top 42%)4828(Top 99%)
24M24.00 mi1.00 mi15541+715206+275206+2714314(Top 54%)4855(Top 43%)4855(Top 99%)
40K24.85 mi0.85 mi15512+295199+75199+714961(Top 56%)5276(Top 46%)5276(Top 108%)
25.2M25.20 mi0.35 mi15498+145190+95190+914392(Top 54%)4962(Top 43%)4962(Top 102%)
Finish26.22 mi1.02 mi15459+395184+65184+614809(Top 56%)5158(Top 45%)5158(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16475

Females

5579

F18-39

5579

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17405

Females

6125

F18-39

6125

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16475

Females

5579

F18-39

5579

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

15480

Females

5019

F18-39

5019

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15551

Females

5023

F18-39

5023

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

15042

Females

4870

F18-39

4870

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15328

Females

5128

F18-39

5128

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

15007

Females

4996

F18-39

4996

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

14661

Females

4854

F18-39

4854

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14483

Females

4835

F18-39

4835

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14355

Females

4828

F18-39

4828

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

14314

Females

4855

F18-39

4855

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14961

Females

5276

F18-39

5276

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14392

Females

4962

F18-39

4962

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

14809

Females

5158

F18-39

5158

Passing Analysis

Category:
Athletes Passed
2198
Passed By
1133
Net Change
+1065
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16524
5K → 10K150570-420#16524#16944
10K → 15K291123+168#16944#16776
15K → 20K37040+330#16776#16446
20K → Half5813+45#16446#16401
Half → 25K29730+267#16401#16134
25K → 30K25377+176#16134#15958
30K → 20M13056+74#15958#15884
20M → 21M15038+112#15884#15772
21M → 35K7513+62#15772#15710
35K → 23M12628+98#15710#15612
23M → 24M10433+71#15612#15541
24M → 40K6334+29#15541#15512
40K → 25.2M3723+14#15512#15498
25.2M → Finish9455+39#15498#15459
TOTALS21981133+1065
📊

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