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BOSTON MARATHON 2023

Joan Butterton

MA

Bib: 27442 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F65-69)
#0 / 221
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
10:30/mi
32:36
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
10:44/mi
1:05:57
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
11:17/mi
1:41:00
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
11:56/mi
2:18:03
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
11:29/mi
2:25:53
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
12:30/mi
2:56:12
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
12:29/mi
3:34:59
↑ 181↓ 1480.2%
138 ft elev
20M
14:14/mi
3:54:20
↑ 64↓ 500.2%
148 ft elev
21M
16:03/mi
4:10:23
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
12:31/mi
4:19:45
↑ 17↓ 861.7%
156 ft elev
23M
13:24/mi
4:36:32
↑ 23↓ 630.6%
116 ft elev
24M
13:31/mi
4:50:03
↓ 821.3%
34 ft elev
40K· 24.85 mi
15:40/mi
5:03:27
↓ 200.3%
20 ft elev
25.2M
14:27/mi
5:08:26
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
13:09/mi
5:21:50
↑ 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
2:25:5311:08 /mi⚡ faster
2nd Half
2:55:5713:25 /mi+20.6%
Positive split — 20.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0432:3610:3032:36
10:30
-
10K
6.21 mi12:23:251:05:5710:3733:21
10:44
+0:14
15K
9.32 mi12:58:281:41:0010:5035:03
11:17
+0:33
20K
12.43 mi13:35:312:18:0311:0737:03
11:56
+0:39
Half
13.11 mi13:43:212:25:5311:087:50
11:29
-0:27
25K
15.53 mi14:13:402:56:1211:2130:19
12:30
+1:01
30K
18.64 mi14:52:273:34:5911:3238:47
12:29
-0:01
20M
20.00 mi15:11:483:54:2011:4319:21
14:14
+1:45
21M
21.00 mi15:27:514:10:2311:5516:03
16:03
+1:49
35K
21.75 mi15:37:134:19:4511:579:22
12:31
-3:32
23M
23.00 mi15:54:004:36:3212:0116:47
13:24
+0:53
24M
24.00 mi16:07:314:50:0312:0513:31
13:31
+0:07
40K
24.85 mi16:20:555:03:2712:1313:24
15:40
+2:09
25.2M
25.20 mi16:25:545:08:2612:144:59
14:27
-1:13
Finish
26.22 mi16:39:185:21:5012:1713:24
13:09
-1:18

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

10:30 /mi

Average Pace

12:17 /mi

Slowest Pace

16:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

1:48:50

34% of race

Time at Steady Pace

2:08:55

40% of race

Time at Slower Pace

1:24:05

26% of race

Average Pace: 12:16 /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 mi11:50:0432:3610:3032:36
10:30
#24702
10K
6.21 mi12:23:251:05:5710:3733:21
10:44
#24942
15K
9.32 mi12:58:281:41:0010:5035:03
11:17
#25194
20K
12.43 mi13:35:312:18:0311:0737:03
11:56
#25376
Half
13.11 mi13:43:212:25:5311:087:50
11:29
#25385
25K
15.53 mi14:13:402:56:1211:2130:19
12:30
#25437
30K
18.64 mi14:52:273:34:5911:3238:47
12:29
#25350
20M
20.00 mi15:11:483:54:2011:4319:21
14:14
#25448
21M
21.00 mi15:27:514:10:2311:5516:03
16:03
#25529
35K
21.75 mi15:37:134:19:4511:579:22
12:31
#25522
23M
23.00 mi15:54:004:36:3212:0116:47
13:24
#25525
24M
24.00 mi16:07:314:50:0312:0513:31
13:31
#25555
40K
24.85 mi16:20:555:03:2712:1313:24
15:40
#25623
25.2M
25.20 mi16:25:545:08:2612:144:59
14:27
#25619
Finish
26.22 mi16:39:185:21:5012:1713:24
13:09
#25664
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi247021027410274255011074910749
10K6.21 mi3.10 mi24942-24010403-12910403-129250671047910479
15K9.32 mi3.11 mi25194-25210549-14610549-146255011074910749
20K12.43 mi3.11 mi25376-18210674-12510674-125256061083310833
Half13.11 mi0.68 mi25385-910680-610680-6254831077810778
25K15.53 mi2.42 mi25437-5210723-4310723-43255511081910819
30K18.64 mi3.11 mi25350+8710691+3210691+32249821055710557
20M20.00 mi1.36 mi25448-9810753-6210753-62259671110511105
21M21.00 mi1.00 mi25529-8110802-4910802-49262411124111241
35K21.75 mi0.75 mi25522+71080210802252061076310763
23M23.00 mi1.25 mi25525-310806-410806-4254451086810868
24M24.00 mi1.00 mi25555-3010828-2210828-22258111107911079
40K24.85 mi0.85 mi25623-6810862-3410862-34263561132511325
25.2M25.20 mi0.35 mi25619+41086210862253771086810868
Finish26.22 mi1.02 mi25664-4510887-2510887-25260521119811198

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21story building
+97ft-345ft

Overall

25501

Females

10749

F65-69

10749

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

25067

Females

10479

F65-69

10479

10K→15K

6.2 - 9.3 mi

Top 96%
×3story building
+67ft-78ft

Overall

25501

Females

10749

F65-69

10749

15K→20K

9.3 - 12.4 mi

Top 96%
×5story building
+106ft-86ft

Overall

25606

Females

10833

F65-69

10833

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

25483

Females

10778

F65-69

10778

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

25551

Females

10819

F65-69

10819

25K→30K

15.5 - 18.6 mi

Top 94%
×9story building
+181ft-148ft

Overall

24982

Females

10557

F65-69

10557

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

25967

Females

11105

F65-69

11105

20M→21M

20.0 - 21.0 mi

Top 99%
×8story building
+106ft-24ft

Overall

26241

Females

11241

F65-69

11241

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

25206

Females

10763

F65-69

10763

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25445

Females

10868

F65-69

10868

23M→24M

23.0 - 24.0 mi

Top 97%
×6story building
+12ft-82ft

Overall

25811

Females

11079

F65-69

11079

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26356

Females

11325

F65-69

11325

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25377

Females

10868

F65-69

10868

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2story building
+22ft-21ft

Overall

26052

Females

11198

F65-69

11198

Passing Analysis

Category:
Athletes Passed
432
Passed By
1394
Net Change
-962
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24702
5K → 10K99339-240#24702#24942
10K → 15K35287-252#24942#25194
15K → 20K41223-182#25194#25376
20K → Half1322-9#25376#25385
Half → 25K3890-52#25385#25437
25K → 30K12841+87#25437#25350
30K → 20M7105-98#25350#25448
20M → 21M788-81#25448#25529
21M → 35K2417+7#25529#25522
35K → 23M1821-3#25522#25525
23M → 24M636-30#25525#25555
24M → 40K270-68#25555#25623
40K → 25.2M106+4#25623#25619
25.2M → Finish449-45#25619#25664
TOTALS4321394-962

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