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BOSTON MARATHON 2023

Shannon Komow

Bib: 25091•F

MA

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

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
10:26/mi
32:26
↑ 97↓ 3451.5%
10K· 6.21 mi
10:25/mi
1:04:49
↑ 79↓ 1380.4%
15K· 9.32 mi
10:05/mi
1:36:08
↑ 67↓ 78
20K· 12.43 mi
10:19/mi
2:08:12
↑ 106↓ 860.1%
Half· 13.11 mi
10:19/mi
2:15:14
↑ 19↓ 370.5%
25K· 15.53 mi
10:38/mi
2:41:02
↑ 66↓ 880.2%
30K· 18.64 mi
12:14/mi
3:19:03
↑ 181↓ 1480.2%
20M
14:33/mi
3:38:50
↑ 64↓ 500.2%
21M
12:06/mi
3:50:56
↑ 106↓ 241.6%
35K· 21.75 mi
10:18/mi
3:58:38
↑ 17↓ 861.7%
23M
13:24/mi
4:15:25
↑ 23↓ 630.6%
24M
10:41/mi
4:26:06
↓ 821.3%
40K· 24.85 mi
11:00/mi
4:35:30
↓ 200.3%
25.2M
11:42/mi
4:39:32
↑ 13↓ 160.2%
Finish· 26.22 mi
10:35/mi
4:50:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:14
Pace10:19 /mi
2nd Half
Distance13.11 mi
Time2:35:05
Pace11:50 /mi
📊Positive Split: 14.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:2832:2610:2632:26
10:26
-
10K
6.21 mi12:28:511:04:4910:2632:23
10:25
-0:01
15K
9.32 mi13:00:101:36:0810:1931:19
10:05
-0:20
20K
12.43 mi13:32:142:08:1210:1932:04
10:19
+0:14
Half
13.11 mi13:39:162:15:1410:197:02
10:19
0:00
25K
15.53 mi14:05:042:41:0210:2225:48
10:38
+0:19
30K
18.64 mi14:43:053:19:0310:4138:01
12:14
+1:36
20M
20.00 mi15:02:523:38:5010:5619:47
14:33
+2:19
21M
21.00 mi15:14:583:50:5611:0012:06
12:06
-2:27
35K
21.75 mi15:22:403:58:3810:587:42
10:18
-1:48
23M
23.00 mi15:39:274:15:2511:0616:47
13:24
+3:06
24M
24.00 mi15:50:084:26:0611:0510:41
10:41
-2:43
40K
24.85 mi15:59:324:35:3011:059:24
11:00
+0:19
25.2M
25.20 mi16:03:344:39:3211:064:02
11:42
+0:42
Finish
26.22 mi16:14:214:50:1911:0510:47
10:35
-1:07

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

10:05 /mi

Average Pace

11:05 /mi

Slowest Pace

14:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:19:36

69% of race

Time at Slower Pace

1:30:43

31% of race

Average Pace: 11:04 /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 mi11:56:2832:2610:2632:26
10:26
#24566
10K
6.21 mi12:28:511:04:4910:2632:23
10:25
#24563
15K
9.32 mi13:00:101:36:0810:1931:19
10:05
#24257
20K
12.43 mi13:32:142:08:1210:1932:04
10:19
#24051
Half
13.11 mi13:39:162:15:1410:197:02
10:19
#24035
25K
15.53 mi14:05:042:41:0210:2225:48
10:38
#23896
30K
18.64 mi14:43:053:19:0310:4138:01
12:14
#24128
20M
20.00 mi15:02:523:38:5010:5619:47
14:33
#24442
21M
21.00 mi15:14:583:50:5611:0012:06
12:06
#24350
35K
21.75 mi15:22:403:58:3810:587:42
10:18
#24266
23M
23.00 mi15:39:274:15:2511:0616:47
13:24
#24395
24M
24.00 mi15:50:084:26:0611:0510:41
10:41
#24318
40K
24.85 mi15:59:324:35:3011:059:24
11:00
#24261
25.2M
25.20 mi16:03:344:39:3211:064:02
11:42
#24233
Finish
26.22 mi16:14:214:50:1911:0510:47
10:35
#24198
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi24566101971019723668(Top 89%)9704(Top 85%)9704(Top 517%)
10K6.21 mi3.10 mi24563+310195+210195+224543(Top 92%)10192(Top 89%)10192(Top 543%)
15K9.32 mi3.11 mi24257+30610034+16110034+16123668(Top 89%)9704(Top 85%)9704(Top 517%)
20K12.43 mi3.11 mi24051+2069922+1129922+11223518(Top 88%)9642(Top 84%)9642(Top 513%)
Half13.11 mi0.68 mi24035+169915+79915+723880(Top 90%)9853(Top 86%)9853(Top 525%)
25K15.53 mi2.42 mi23896+1399847+689847+6823430(Top 88%)9632(Top 84%)9632(Top 513%)
30K18.64 mi3.11 mi24128-2329993-1469993-14624747(Top 93%)10423(Top 91%)10423(Top 555%)
20M20.00 mi1.36 mi24442-31410180-18710180-18726129(Top 98%)11191(Top 98%)11191(Top 596%)
21M21.00 mi1.00 mi24350+9210135+4510135+4522917(Top 86%)9509(Top 83%)9509(Top 506%)
35K21.75 mi0.75 mi24266+8410106+2910106+2922002(Top 83%)9060(Top 79%)9060(Top 482%)
23M23.00 mi1.25 mi24395-12910176-7010176-7025443(Top 96%)10866(Top 95%)10866(Top 579%)
24M24.00 mi1.00 mi24318+7710141+3510141+3522438(Top 84%)9337(Top 82%)9337(Top 497%)
40K24.85 mi0.85 mi24261+5710114+2710114+2722362(Top 84%)9331(Top 82%)9331(Top 497%)
25.2M25.20 mi0.35 mi24233+2810106+810106+821992(Top 83%)9135(Top 80%)9135(Top 486%)
Finish26.22 mi1.02 mi24198+3510089+1710089+1723186(Top 87%)9746(Top 85%)9746(Top 519%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

23668

Females

9704

F40-44

9704

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

24543

Females

10192

F40-44

10192

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

23668

Females

9704

F40-44

9704

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

23518

Females

9642

F40-44

9642

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

23880

Females

9853

F40-44

9853

Half→25K

13.1 - 15.5 mi

Top 88%
×4story building
+66ft-88ft

Overall

23430

Females

9632

F40-44

9632

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

24747

Females

10423

F40-44

10423

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

26129

Females

11191

F40-44

11191

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

22917

Females

9509

F40-44

9509

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

22002

Females

9060

F40-44

9060

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25443

Females

10866

F40-44

10866

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

22438

Females

9337

F40-44

9337

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22362

Females

9331

F40-44

9331

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

21992

Females

9135

F40-44

9135

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

23186

Females

9746

F40-44

9746

Passing Analysis

Category:
Athletes Passed
1410
Passed By
1042
Net Change
+368
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24566
5K → 10K198195+3#24566#24563
10K → 15K33428+306#24563#24257
15K → 20K23226+206#24257#24051
20K → Half2913+16#24051#24035
Half → 25K16324+139#24035#23896
25K → 30K43275-232#23896#24128
30K → 20M4318-314#24128#24442
20M → 21M10513+92#24442#24350
21M → 35K840+84#24350#24266
35K → 23M5134-129#24266#24395
23M → 24M803+77#24395#24318
24M → 40K625+57#24318#24261
40K → 25.2M291+28#24261#24233
25.2M → Finish427+35#24233#24198
TOTALS14101042+368
📊

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