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BOSTON MARATHON 2023

Kathleen Brownsdon

Bib: 21136•F

VI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 46%
Masters (Masters Women)
#0 / 6539
Top 34%
Division (F50-54)
#0 / 1207
Top 26%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:42
Rank: #13664
Start → 5K
24:42 | 7:57/mi
10K· 6.21 mi
49:43
Rank: #14405 (-741)
5K → 10K
25:01 | 8:03/mi
15K· 9.32 mi
1:15:11
Rank: #14869 (-464)
10K → 15K
25:28 | 8:12/mi
20K· 12.43 mi
1:40:59
Rank: #15068 (-199)
15K → 20K
25:48 | 8:18/mi
Half· 13.11 mi
1:46:39
Rank: #15149 (-81)
20K → Half
5:40 | 8:18/mi
25K· 15.53 mi
2:07:17
Rank: #15313 (-164)
Half → 25K
20:38 | 8:31/mi
30K· 18.64 mi
2:35:09
Rank: #15633 (-320)
25K → 30K
27:52 | 8:58/mi
20M
2:47:28
Rank: #15690 (-57)
30K → 20M
12:19 | 9:04/mi
21M
2:57:08
Rank: #15760 (-70)
20M → 21M
9:40 | 9:40/mi
35K· 21.75 mi
3:03:29
Rank: #15732 (+28)
21M → 35K
6:21 | 8:29/mi
23M
3:14:40
Rank: #15703 (+29)
35K → 23M
11:11 | 8:56/mi
24M
3:23:03
Rank: #15606 (+97)
23M → 24M
8:23 | 8:23/mi
40K· 24.85 mi
3:30:21
Rank: #15536 (+70)
24M → 40K
7:18 | 8:32/mi
25.2M
3:33:38
Rank: #15545 (-9)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:42:24
Rank: #15543 (+2)
25.2M → Finish
8:46 | 8:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:39
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:55:45
Pace8:50 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2224:427:5724:42
7:57
-
10K
6.21 mi11:42:2349:438:0025:01
8:03
+0:06
15K
9.32 mi12:07:511:15:118:0425:28
8:12
+0:09
20K
12.43 mi12:33:391:40:598:0825:48
8:18
+0:06
Half
13.11 mi12:39:191:46:398:085:40
8:18
0:00
25K
15.53 mi12:59:572:07:178:1220:38
8:31
+0:13
30K
18.64 mi13:27:492:35:098:1927:52
8:58
+0:27
20M
20.00 mi13:40:082:47:288:2212:19
9:04
+0:06
21M
21.00 mi13:49:482:57:088:269:40
9:40
+0:36
35K
21.75 mi13:56:093:03:298:266:21
8:29
-1:11
23M
23.00 mi14:07:203:14:408:2811:11
8:56
+0:27
24M
24.00 mi14:15:433:23:038:288:23
8:23
-0:33
40K
24.85 mi14:23:013:30:218:287:18
8:32
+0:09
25.2M
25.20 mi14:26:183:33:388:293:17
9:31
+0:59
Finish
26.22 mi14:35:043:42:248:298:46
8:36
-0:55

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

7:57 /mi

Average Pace

8:29 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:11

34% of race

Time at Steady Pace

1:22:54

37% of race

Time at Slower Pace

1:04:19

29% of race

Average Pace: 8:29 /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 mi11:17:2224:427:5724:42
7:57
#13664
10K
6.21 mi11:42:2349:438:0025:01
8:03
#14405
15K
9.32 mi12:07:511:15:118:0425:28
8:12
#14869
20K
12.43 mi12:33:391:40:598:0825:48
8:18
#15068
Half
13.11 mi12:39:191:46:398:085:40
8:18
#15149
25K
15.53 mi12:59:572:07:178:1220:38
8:31
#15313
30K
18.64 mi13:27:492:35:098:1927:52
8:58
#15633
20M
20.00 mi13:40:082:47:288:2212:19
9:04
#15690
21M
21.00 mi13:49:482:57:088:269:40
9:40
#15760
35K
21.75 mi13:56:093:03:298:266:21
8:29
#15732
23M
23.00 mi14:07:203:14:408:2811:11
8:56
#15703
24M
24.00 mi14:15:433:23:038:288:23
8:23
#15606
40K
24.85 mi14:23:013:30:218:287:18
8:32
#15536
25.2M
25.20 mi14:26:183:33:388:293:17
9:31
#15545
Finish
26.22 mi14:35:043:42:248:298:46
8:36
#15543
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi136643827382715854(Top 60%)5200(Top 46%)5200(Top 431%)
10K6.21 mi3.10 mi14405-7414288-4614288-46115199(Top 57%)4794(Top 42%)4794(Top 397%)
15K9.32 mi3.11 mi14869-4644579-2914579-29115854(Top 60%)5200(Top 46%)5200(Top 431%)
20K12.43 mi3.11 mi15068-1994726-1474726-14715640(Top 59%)5120(Top 45%)5120(Top 424%)
Half13.11 mi0.68 mi15149-814774-484774-4816532(Top 62%)5615(Top 49%)5615(Top 465%)
25K15.53 mi2.42 mi15313-1644906-1324906-13216263(Top 61%)5590(Top 49%)5590(Top 463%)
30K18.64 mi3.11 mi15633-3205142-2365142-23617005(Top 64%)6063(Top 53%)6063(Top 502%)
20M20.00 mi1.36 mi15690-575202-605202-6016868(Top 63%)6072(Top 53%)6072(Top 503%)
21M21.00 mi1.00 mi15760-705274-725274-7216718(Top 63%)6021(Top 53%)6021(Top 499%)
35K21.75 mi0.75 mi15732+285272+25272+215270(Top 57%)5274(Top 46%)5274(Top 437%)
23M23.00 mi1.25 mi15703+295285-135285-1315708(Top 59%)5577(Top 49%)5577(Top 462%)
24M24.00 mi1.00 mi15606+975244+415244+4113809(Top 52%)4567(Top 40%)4567(Top 378%)
40K24.85 mi0.85 mi15536+705211+335211+3313625(Top 51%)4546(Top 40%)4546(Top 377%)
25.2M25.20 mi0.35 mi15545-95219-85219-815326(Top 58%)5487(Top 48%)5487(Top 455%)
Finish26.22 mi1.02 mi15543+25231-125231-1216014(Top 60%)5815(Top 51%)5815(Top 482%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21stories
+97ft-345ft

Overall

15854

Females

5200

F50-54

5200

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15199

Females

4794

F50-54

4794

10K→15K

6.2 - 9.3 mi

Top 60%
×3stories
+67ft-78ft

Overall

15854

Females

5200

F50-54

5200

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

15640

Females

5120

F50-54

5120

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

16532

Females

5615

F50-54

5615

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16263

Females

5590

F50-54

5590

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17005

Females

6063

F50-54

6063

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16868

Females

6072

F50-54

6072

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

16718

Females

6021

F50-54

6021

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

15270

Females

5274

F50-54

5274

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

15708

Females

5577

F50-54

5577

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

13809

Females

4567

F50-54

4567

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13625

Females

4546

F50-54

4546

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15326

Females

5487

F50-54

5487

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

16014

Females

5815

F50-54

5815

Passing Analysis

Category:
Athletes Passed
1055
Passed By
2934
Net Change
-1879
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13664
5K → 10K71812-741#13664#14405
10K → 15K66530-464#14405#14869
15K → 20K128327-199#14869#15068
20K → Half1798-81#15068#15149
Half → 25K86250-164#15149#15313
25K → 30K91411-320#15313#15633
30K → 20M68125-57#15633#15690
20M → 21M71141-70#15690#15760
21M → 35K5729+28#15760#15732
35K → 23M9061+29#15732#15703
23M → 24M11821+97#15703#15606
24M → 40K9727+70#15606#15536
40K → 25.2M2635-9#15536#15545
25.2M → Finish6967+2#15545#15543
TOTALS10552934-1879
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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