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BOSTON MARATHON 2023

Karen Brady

Bib: 17603•F

IN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 41%
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
8:04/mi
25:05
↑ 97↓ 3451.5%
10K· 6.21 mi
8:11/mi
50:30
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:16:18
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:42:29
↑ 106↓ 860.1%
Half· 13.11 mi
8:18/mi
1:48:09
↑ 19↓ 370.5%
25K· 15.53 mi
8:31/mi
2:08:48
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:36:30
↑ 181↓ 1480.2%
20M
9:15/mi
2:49:04
↑ 64↓ 500.2%
21M
9:37/mi
2:58:41
↑ 106↓ 241.6%
35K· 21.75 mi
8:55/mi
3:05:21
↑ 17↓ 861.7%
23M
9:13/mi
3:16:53
↑ 23↓ 630.6%
24M
9:02/mi
3:25:55
↓ 821.3%
40K· 24.85 mi
9:16/mi
3:33:50
↓ 200.3%
25.2M
10:18/mi
3:37:23
↑ 13↓ 160.2%
Finish· 26.22 mi
9:09/mi
3:46:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:09
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time1:58:33
Pace9:03 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4425:058:0425:05
8:04
-
10K
6.21 mi11:41:0950:308:0825:25
8:11
+0:07
15K
9.32 mi12:06:571:16:188:1125:48
8:18
+0:07
20K
12.43 mi12:33:081:42:298:1526:11
8:26
+0:08
Half
13.11 mi12:38:481:48:098:155:40
8:18
-0:08
25K
15.53 mi12:59:272:08:488:1720:39
8:31
+0:13
30K
18.64 mi13:27:092:36:308:2427:42
8:55
+0:24
20M
20.00 mi13:39:432:49:048:2712:34
9:15
+0:20
21M
21.00 mi13:49:202:58:418:319:37
9:37
+0:22
35K
21.75 mi13:56:003:05:218:316:40
8:55
-0:42
23M
23.00 mi14:07:323:16:538:3411:32
9:13
+0:18
24M
24.00 mi14:16:343:25:558:359:02
9:02
-0:11
40K
24.85 mi14:24:293:33:508:367:55
9:16
+0:14
25.2M
25.20 mi14:28:023:37:238:383:33
10:18
+1:02
Finish
26.22 mi14:37:213:46:428:399:19
9:09
-1:09

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

8:04 /mi

Average Pace

8:39 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:48

57% of race

Time at Steady Pace

52:43

23% of race

Time at Slower Pace

45:11

20% of race

Average Pace: 8:39 /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 mi11:15:4425:058:0425:05
8:04
#14530
10K
6.21 mi11:41:0950:308:0825:25
8:11
#15303
15K
9.32 mi12:06:571:16:188:1125:48
8:18
#15726
20K
12.43 mi12:33:081:42:298:1526:11
8:26
#15901
Half
13.11 mi12:38:481:48:098:155:40
8:18
#15913
25K
15.53 mi12:59:272:08:488:1720:39
8:31
#15980
30K
18.64 mi13:27:092:36:308:2427:42
8:55
#16128
20M
20.00 mi13:39:432:49:048:2712:34
9:15
#16241
21M
21.00 mi13:49:202:58:418:319:37
9:37
#16253
35K
21.75 mi13:56:003:05:218:316:40
8:55
#16294
23M
23.00 mi14:07:323:16:538:3411:32
9:13
#16338
24M
24.00 mi14:16:343:25:558:359:02
9:02
#16379
40K
24.85 mi14:24:293:33:508:367:55
9:16
#16410
25.2M
25.20 mi14:28:023:37:238:383:33
10:18
#16446
Finish
26.22 mi14:37:213:46:428:399:19
9:09
#16555
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi145304348434816572(Top 62%)5644(Top 49%)5644(Top 301%)
10K6.21 mi3.10 mi15303-7734840-4924840-49216127(Top 61%)5352(Top 47%)5352(Top 285%)
15K9.32 mi3.11 mi15726-4235111-2715111-27116572(Top 62%)5644(Top 49%)5644(Top 301%)
20K12.43 mi3.11 mi15901-1755244-1335244-13316427(Top 62%)5606(Top 49%)5606(Top 299%)
Half13.11 mi0.68 mi15913-125252-85252-816567(Top 62%)5650(Top 49%)5650(Top 301%)
25K15.53 mi2.42 mi15980-675325-735325-7316318(Top 61%)5625(Top 49%)5625(Top 300%)
30K18.64 mi3.11 mi16128-1485456-1315456-13116744(Top 63%)5918(Top 52%)5918(Top 315%)
20M20.00 mi1.36 mi16241-1135543-875543-8717793(Top 67%)6627(Top 58%)6627(Top 353%)
21M21.00 mi1.00 mi16253-125571-285571-2816521(Top 62%)5925(Top 52%)5925(Top 315%)
35K21.75 mi0.75 mi16294-415599-285599-2817509(Top 66%)6551(Top 57%)6551(Top 349%)
23M23.00 mi1.25 mi16338-445638-395638-3917123(Top 64%)6352(Top 56%)6352(Top 338%)
24M24.00 mi1.00 mi16379-415676-385676-3817388(Top 65%)6567(Top 57%)6567(Top 350%)
40K24.85 mi0.85 mi16410-315724-485724-4817352(Top 65%)6595(Top 58%)6595(Top 351%)
25.2M25.20 mi0.35 mi16446-365747-235747-2318465(Top 69%)7198(Top 63%)7198(Top 383%)
Finish26.22 mi1.02 mi16555-1095813-665813-6618660(Top 70%)7253(Top 63%)7253(Top 386%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16572

Females

5644

F40-44

5644

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

16127

Females

5352

F40-44

5352

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16572

Females

5644

F40-44

5644

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16427

Females

5606

F40-44

5606

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

16567

Females

5650

F40-44

5650

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

16318

Females

5625

F40-44

5625

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16744

Females

5918

F40-44

5918

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17793

Females

6627

F40-44

6627

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

16521

Females

5925

F40-44

5925

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

17509

Females

6551

F40-44

6551

35K→23M

21.8 - 23.0 mi

Top 64%
×5story building
+23ft-63ft

Overall

17123

Females

6352

F40-44

6352

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

17388

Females

6567

F40-44

6567

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17352

Females

6595

F40-44

6595

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18465

Females

7198

F40-44

7198

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

18660

Females

7253

F40-44

7253

Passing Analysis

Category:
Athletes Passed
928
Passed By
2953
Net Change
-2025
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14530
5K → 10K77850-773#14530#15303
10K → 15K64487-423#15303#15726
15K → 20K115290-175#15726#15901
20K → Half2941-12#15901#15913
Half → 25K114181-67#15913#15980
25K → 30K142290-148#15980#16128
30K → 20M50163-113#16128#16241
20M → 21M7688-12#16241#16253
21M → 35K3475-41#16253#16294
35K → 23M64108-44#16294#16338
23M → 24M5798-41#16338#16379
24M → 40K6697-31#16379#16410
40K → 25.2M1854-36#16410#16446
25.2M → Finish22131-109#16446#16555
TOTALS9282953-2025
📊

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