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BOSTON MARATHON 2023

Stacy Clower

TN

Bib: 12526 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Female)
#0 / 11423
Top 22%
Masters (Masters Women)
#0 / 6539
Top 10%
Division (F45-49)
#0 / 1817
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:43/mi
23:58
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:34/mi
47:29
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:32/mi
1:10:52
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:37/mi
1:34:33
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:37/mi
1:39:45
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:47/mi
1:58:37
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:10/mi
2:23:59
↑ 181↓ 1480.2%
138 ft elev
20M
8:14/mi
2:35:10
↑ 64↓ 500.2%
148 ft elev
21M
8:37/mi
2:43:47
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:57/mi
2:49:44
↑ 17↓ 861.7%
156 ft elev
23M
8:11/mi
2:59:59
↑ 23↓ 630.6%
116 ft elev
24M
7:49/mi
3:07:48
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:00/mi
3:14:38
↓ 200.3%
20 ft elev
25.2M
8:30/mi
3:17:34
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:40/mi
3:25:23
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:39:457:37 /mi⚡ faster
2nd Half
1:45:388:03 /mi+5.9%
Positive split — 5.9% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
23:587:433.11 mi23:58
7:43
-
10K
47:297:393.10 mi23:31
7:34
-0:09
15K
1:10:527:363.11 mi23:23
7:32
-0:02
20K
1:34:337:363.11 mi23:41
7:37
+0:05
Half(13.11 mi)
1:39:457:370.68 mi5:12
7:37
0:00
25K
1:58:377:382.42 mi18:52
7:47
+0:10
30K
2:23:597:433.11 mi25:22
8:10
+0:23
20M
2:35:107:451.36 mi11:11
8:14
+0:04
21M
2:43:477:481.00 mi8:37
8:37
+0:23
35K
2:49:447:480.75 mi5:57
7:57
-0:40
23M
2:59:597:501.25 mi10:15
8:11
+0:14
24M
3:07:487:501.00 mi7:49
7:49
-0:22
40K
3:14:387:500.85 mi6:50
8:00
+0:11
25.2M
3:17:347:500.35 mi2:56
8:30
+0:30
Finish(26.22 mi)
3:25:237:501.02 mi7:49
7:40
-0:50
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:32 /mi

Average Pace

7:50 /mi

Slowest Pace

8:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:13:50

94% of race

Time at Steady Pace

11:33

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:50 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi11588263426341040220292029
10K3.10 mi11288+3002487+1472487+1471106123482348
15K3.11 mi10953+3352309+1782309+1781040220292029
20K3.11 mi10779+1742236+732236+731027720382038
Half(13.11 mi)0.68 mi10807-282249-132249-131126925002500
25K2.42 mi10791+162246+32246+31095524572457
30K3.11 mi10956-1652379-1332379-1331209532333233
20M1.36 mi11004-482434-552434-551189132073207
21M1.00 mi10997+72460-262460-261116729492949
35K0.75 mi11021-242483-232483-231179132983298
23M1.25 mi10993+282494-112494-111111130653065
24M1.00 mi10930+632488+62488+6995025682568
40K0.85 mi10883+472495-72495-71002126582658
25.2M0.35 mi10856+272497-22497-2964325262526
Finish(26.22 mi)1.02 mi10780+762487+102487+10981226172617

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10402

Females

2029

F45-49

2029

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11061

Females

2348

F45-49

2348

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10402

Females

2029

F45-49

2029

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10277

Females

2038

F45-49

2038

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11269

Females

2500

F45-49

2500

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10955

Females

2457

F45-49

2457

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12095

Females

3233

F45-49

3233

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

11891

Females

3207

F45-49

3207

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11167

Females

2949

F45-49

2949

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11791

Females

3298

F45-49

3298

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11111

Females

3065

F45-49

3065

23M→24M

23.0 - 24.0 mi

Top 37%
×6story building
+12ft-82ft

Overall

9950

Females

2568

F45-49

2568

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10021

Females

2658

F45-49

2658

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9643

Females

2526

F45-49

2526

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

9812

Females

2617

F45-49

2617

Passing Analysis

Category:
Passed
2028*
Passed By
1220
Net Change
+808
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11588
5K → 10K470170+300#11588#11288
10K → 15K39257+335#11288#10953
15K → 20K25177+174#10953#10779
20K → Half1947-28#10779#10807
Half → 25K136120+16#10807#10791
25K → 30K134299-165#10791#10956
30K → 20M71*119-48#10956#11004
20M → 21M7972+7#11004#10997
21M → 35K3862-24#10997#11021
35K → 23M10072+28#11021#10993
23M → 24M9936+63#10993#10930
24M → 40K8033+47#10930#10883
40K → 25.2M4821+27#10883#10856
25.2M → Finish11135+76#10856#10780
TOTALS2028*1220+808

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

Passing Charts

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