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BOSTON MARATHON 2023

Shannon Chappon

Bib: 20921•F

WA

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

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
8:44/mi
27:07
↑ 97↓ 3451.5%
10K· 6.21 mi
8:33/mi
53:40
↑ 79↓ 1380.4%
15K· 9.32 mi
8:36/mi
1:20:23
↑ 67↓ 78
20K· 12.43 mi
8:45/mi
1:47:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:46/mi
1:53:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:51/mi
2:15:00
↑ 66↓ 880.2%
30K· 18.64 mi
9:09/mi
2:43:25
↑ 181↓ 1480.2%
20M
9:10/mi
2:55:52
↑ 64↓ 500.2%
21M
9:46/mi
3:05:38
↑ 106↓ 241.6%
35K· 21.75 mi
8:47/mi
3:12:12
↑ 17↓ 861.7%
23M
9:06/mi
3:23:36
↑ 23↓ 630.6%
24M
8:48/mi
3:32:24
↓ 821.3%
40K· 24.85 mi
9:05/mi
3:40:10
↓ 200.3%
25.2M
9:37/mi
3:43:29
↑ 13↓ 160.2%
Finish· 26.22 mi
8:58/mi
3:52:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:32
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time1:59:05
Pace9:05 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3427:078:4427:07
8:44
-
10K
6.21 mi11:46:0753:408:3826:33
8:33
-0:11
15K
9.32 mi12:12:501:20:238:3726:43
8:36
+0:03
20K
12.43 mi12:40:001:47:338:3927:10
8:45
+0:09
Half
13.11 mi12:45:591:53:328:405:59
8:46
+0:01
25K
15.53 mi13:07:272:15:008:4121:28
8:51
+0:05
30K
18.64 mi13:35:522:43:258:4628:25
9:09
+0:18
20M
20.00 mi13:48:192:55:528:4812:27
9:10
+0:01
21M
21.00 mi13:58:053:05:388:509:46
9:46
+0:36
35K
21.75 mi14:04:393:12:128:506:34
8:47
-0:59
23M
23.00 mi14:16:033:23:368:5111:24
9:06
+0:19
24M
24.00 mi14:24:513:32:248:518:48
8:48
-0:18
40K
24.85 mi14:32:373:40:108:517:46
9:05
+0:17
25.2M
25.20 mi14:35:563:43:298:523:19
9:37
+0:32
Finish
26.22 mi14:45:043:52:378:539:08
8:58
-0:39

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

8:33 /mi

Average Pace

8:53 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:39:32

94% of race

Time at Steady Pace

13:05

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 mi11:19:3427:078:4427:07
8:44
#19064
10K
6.21 mi11:46:0753:408:3826:33
8:33
#18730
15K
9.32 mi12:12:501:20:238:3726:43
8:36
#18611
20K
12.43 mi12:40:001:47:338:3927:10
8:45
#18537
Half
13.11 mi12:45:591:53:328:405:59
8:46
#18575
25K
15.53 mi13:07:272:15:008:4121:28
8:51
#18517
30K
18.64 mi13:35:522:43:258:4628:25
9:09
#18376
20M
20.00 mi13:48:192:55:528:4812:27
9:10
#18308
21M
21.00 mi13:58:053:05:388:509:46
9:46
#18222
35K
21.75 mi14:04:393:12:128:506:34
8:47
#18157
23M
23.00 mi14:16:033:23:368:5111:24
9:06
#18065
24M
24.00 mi14:24:513:32:248:518:48
8:48
#17980
40K
24.85 mi14:32:373:40:108:517:46
9:05
#17937
25.2M
25.20 mi14:35:563:43:298:523:19
9:37
#17899
Finish
26.22 mi14:45:043:52:378:539:08
8:58
#17910
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi190647238723818449(Top 69%)6764(Top 59%)6764(Top 372%)
10K6.21 mi3.10 mi18730+3346966+2726966+27218540(Top 70%)6793(Top 59%)6793(Top 374%)
15K9.32 mi3.11 mi18611+1196889+776889+7718449(Top 69%)6764(Top 59%)6764(Top 372%)
20K12.43 mi3.11 mi18537+746826+636826+6318384(Top 69%)6724(Top 59%)6724(Top 370%)
Half13.11 mi0.68 mi18575-386849-236849-2319351(Top 73%)7284(Top 64%)7284(Top 401%)
25K15.53 mi2.42 mi18517+586841+86841+818250(Top 69%)6694(Top 59%)6694(Top 368%)
30K18.64 mi3.11 mi18376+1416788+536788+5317916(Top 67%)6601(Top 58%)6601(Top 363%)
20M20.00 mi1.36 mi18308+686771+176771+1717382(Top 65%)6381(Top 56%)6381(Top 351%)
21M21.00 mi1.00 mi18222+866735+366735+3617138(Top 64%)6273(Top 55%)6273(Top 345%)
35K21.75 mi0.75 mi18157+656698+376698+3716864(Top 63%)6208(Top 54%)6208(Top 342%)
23M23.00 mi1.25 mi18065+926649+496649+4916588(Top 62%)6077(Top 53%)6077(Top 334%)
24M24.00 mi1.00 mi17980+856615+346615+3416229(Top 61%)5942(Top 52%)5942(Top 327%)
40K24.85 mi0.85 mi17937+436599+166599+1616591(Top 62%)6181(Top 54%)6181(Top 340%)
25.2M25.20 mi0.35 mi17899+386574+256574+2515816(Top 59%)5772(Top 51%)5772(Top 318%)
Finish26.22 mi1.02 mi17910-116600-266600-2617808(Top 67%)6812(Top 60%)6812(Top 375%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

18449

Females

6764

F45-49

6764

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

18540

Females

6793

F45-49

6793

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

18449

Females

6764

F45-49

6764

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18384

Females

6724

F45-49

6724

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19351

Females

7284

F45-49

7284

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18250

Females

6694

F45-49

6694

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17916

Females

6601

F45-49

6601

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17382

Females

6381

F45-49

6381

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

17138

Females

6273

F45-49

6273

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16864

Females

6208

F45-49

6208

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

16588

Females

6077

F45-49

6077

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16229

Females

5942

F45-49

5942

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16591

Females

6181

F45-49

6181

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15816

Females

5772

F45-49

5772

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17808

Females

6812

F45-49

6812

Passing Analysis

Category:
Athletes Passed
2141
Passed By
987
Net Change
+1154
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19064
5K → 10K555221+334#19064#18730
10K → 15K241122+119#18730#18611
15K → 20K193119+74#18611#18537
20K → Half2058-38#18537#18575
Half → 25K15395+58#18575#18517
25K → 30K24099+141#18517#18376
30K → 20M12658+68#18376#18308
20M → 21M13448+86#18308#18222
21M → 35K8722+65#18222#18157
35K → 23M11826+92#18157#18065
23M → 24M10419+85#18065#17980
24M → 40K7229+43#17980#17937
40K → 25.2M479+38#17937#17899
25.2M → Finish5162-11#17899#17910
TOTALS2141987+1154
📊

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