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BOSTON MARATHON 2023

Karen Cathell

Bib: 17900•F

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 49%
Gender (Female)
#0 / 11423
Top 33%
Masters (Masters Women)
#0 / 6539
Top 20%
Division (F40-44)
#0 / 1878
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:23
Rank: #15234
Start → 5K
8:10/mi
25:23 split
10K· 6.21 mi
50:19
Rank: #15109 (+125)
5K → 10K
8:02/mi
24:56 split
15K· 9.32 mi
1:15:10
Rank: #14858 (+251)
10K → 15K
8:00/mi
24:51 split
20K· 12.43 mi
1:40:12
Rank: #14580 (+278)
15K → 20K
8:03/mi
25:02 split
Half· 13.11 mi
1:45:43
Rank: #14614 (-34)
20K → Half
8:05/mi
5:31 split
25K· 15.53 mi
2:05:16
Rank: #14364 (+250)
Half → 25K
8:04/mi
19:33 split
30K· 18.64 mi
2:30:45
Rank: #13994 (+370)
25K → 30K
8:12/mi
25:29 split
20M
2:41:58
Rank: #13814 (+180)
30K → 20M
8:15/mi
11:13 split
21M
2:50:38
Rank: #13654 (+160)
20M → 21M
8:40/mi
8:40 split
35K· 21.75 mi
2:56:39
Rank: #13597 (+57)
21M → 35K
8:03/mi
6:01 split
23M
3:07:07
Rank: #13484 (+113)
35K → 23M
8:22/mi
10:28 split
24M
3:15:10
Rank: #13353 (+131)
23M → 24M
8:03/mi
8:03 split
40K· 24.85 mi
3:22:10
Rank: #13259 (+94)
24M → 40K
8:11/mi
7:00 split
25.2M
3:25:12
Rank: #13204 (+55)
40K → 25.2M
8:48/mi
3:02 split
Finish· 26.22 mi
3:33:24
Rank: #13165 (+39)
25.2M → Finish
8:03/mi
8:12 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:43
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:47:41
Pace8:13 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5425:238:1025:23
8:10
-
10K
6.21 mi11:40:5050:198:0624:56
8:02
-0:08
15K
9.32 mi12:05:411:15:108:0424:51
8:00
-0:02
20K
12.43 mi12:30:431:40:128:0425:02
8:03
+0:03
Half
13.11 mi12:36:141:45:438:045:31
8:05
+0:02
25K
15.53 mi12:55:472:05:168:0419:33
8:04
-0:01
30K
18.64 mi13:21:162:30:458:0525:29
8:12
+0:08
20M
20.00 mi13:32:292:41:588:0611:13
8:15
+0:03
21M
21.00 mi13:41:092:50:388:088:40
8:40
+0:25
35K
21.75 mi13:47:102:56:398:076:01
8:03
-0:37
23M
23.00 mi13:57:383:07:078:0810:28
8:22
+0:19
24M
24.00 mi14:05:413:15:108:088:03
8:03
-0:19
40K
24.85 mi14:12:413:22:108:087:00
8:11
+0:08
25.2M
25.20 mi14:15:433:25:128:093:02
8:48
+0:37
Finish
26.22 mi14:23:553:33:248:098:12
8:03
-0:45

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

8:00 /mi

Average Pace

8:09 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:42

95% of race

Time at Steady Pace

11:42

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:08 /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 mi11:15:5425:238:1025:23
8:10
#15234
10K
6.21 mi11:40:5050:198:0624:56
8:02
#15109
15K
9.32 mi12:05:411:15:108:0424:51
8:00
#14858
20K
12.43 mi12:30:431:40:128:0425:02
8:03
#14580
Half
13.11 mi12:36:141:45:438:045:31
8:05
#14614
25K
15.53 mi12:55:472:05:168:0419:33
8:04
#14364
30K
18.64 mi13:21:162:30:458:0525:29
8:12
#13994
20M
20.00 mi13:32:292:41:588:0611:13
8:15
#13814
21M
21.00 mi13:41:092:50:388:088:40
8:40
#13654
35K
21.75 mi13:47:102:56:398:076:01
8:03
#13597
23M
23.00 mi13:57:383:07:078:0810:28
8:22
#13484
24M
24.00 mi14:05:413:15:108:088:03
8:03
#13353
40K
24.85 mi14:12:413:22:108:087:00
8:11
#13259
25.2M
25.20 mi14:15:433:25:128:093:02
8:48
#13204
Finish
26.22 mi14:23:553:33:248:098:12
8:03
#13165
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi152344793479314384(Top 54%)4315(Top 38%)4315(Top 230%)
10K6.21 mi3.10 mi15109+1254714+794714+7914995(Top 56%)4668(Top 41%)4668(Top 249%)
15K9.32 mi3.11 mi14858+2514571+1434571+14314384(Top 54%)4315(Top 38%)4315(Top 230%)
20K12.43 mi3.11 mi14580+2784418+1534418+15313904(Top 52%)4051(Top 35%)4051(Top 216%)
Half13.11 mi0.68 mi14614-344439-214439-2115045(Top 57%)4690(Top 41%)4690(Top 250%)
25K15.53 mi2.42 mi14364+2504322+1174322+11713266(Top 50%)3787(Top 33%)3787(Top 202%)
30K18.64 mi3.11 mi13994+3704138+1844138+18412375(Top 46%)3402(Top 30%)3402(Top 181%)
20M20.00 mi1.36 mi13814+1804044+944044+9412076(Top 45%)3324(Top 29%)3324(Top 177%)
21M21.00 mi1.00 mi13654+1603966+783966+7811490(Top 43%)3141(Top 27%)3141(Top 167%)
35K21.75 mi0.75 mi13597+573947+193947+1912464(Top 47%)3683(Top 32%)3683(Top 196%)
23M23.00 mi1.25 mi13484+1133908+393908+3912328(Top 46%)3706(Top 32%)3706(Top 197%)
24M24.00 mi1.00 mi13353+1313851+573851+5711617(Top 44%)3395(Top 30%)3395(Top 181%)
40K24.85 mi0.85 mi13259+943813+383813+3811309(Top 42%)3318(Top 29%)3318(Top 177%)
25.2M25.20 mi0.35 mi13204+553801+123801+1211398(Top 43%)3410(Top 30%)3410(Top 182%)
Finish26.22 mi1.02 mi13165+393794+73794+712464(Top 47%)3941(Top 35%)3941(Top 210%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

14384

Females

4315

F40-44

4315

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14995

Females

4668

F40-44

4668

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

14384

Females

4315

F40-44

4315

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

13904

Females

4051

F40-44

4051

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15045

Females

4690

F40-44

4690

Half→25K

13.1 - 15.5 mi

Top 50%
×4stories
+66ft-88ft

Overall

13266

Females

3787

F40-44

3787

25K→30K

15.5 - 18.6 mi

Top 46%
×9stories
+181ft-148ft

Overall

12375

Females

3402

F40-44

3402

30K→20M

18.6 - 20.0 mi

Top 45%
×5stories
+64ft-50ft

Overall

12076

Females

3324

F40-44

3324

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

11490

Females

3141

F40-44

3141

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

12464

Females

3683

F40-44

3683

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12328

Females

3706

F40-44

3706

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

11617

Females

3395

F40-44

3395

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11309

Females

3318

F40-44

3318

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11398

Females

3410

F40-44

3410

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

12464

Females

3941

F40-44

3941

Passing Analysis

Category:
Athletes Passed
2771
Passed By
702
Net Change
+2069
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15234
5K → 10K374249+125#15234#15109
10K → 15K32877+251#15109#14858
15K → 20K34163+278#14858#14580
20K → Half1953-34#14580#14614
Half → 25K28535+250#14614#14364
25K → 30K40535+370#14364#13994
30K → 20M19717+180#13994#13814
20M → 21M18828+160#13814#13654
21M → 35K8225+57#13654#13597
35K → 23M14734+113#13597#13484
23M → 24M14615+131#13484#13353
24M → 40K11319+94#13353#13259
40K → 25.2M6510+55#13259#13204
25.2M → Finish8142+39#13204#13165
TOTALS2771702+2069
📊

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