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BOSTON MARATHON 2023

Katherine Crawford

Bib: 29717•F

CO

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
8:49/mi
27:22
↑ 97↓ 3451.5%
10K· 6.21 mi
7:59/mi
52:09
↑ 79↓ 1380.4%
15K· 9.32 mi
7:58/mi
1:16:55
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:42:09
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:47:34
↑ 19↓ 370.5%
25K· 15.53 mi
8:06/mi
2:07:13
↑ 66↓ 880.2%
30K· 18.64 mi
8:42/mi
2:34:15
↑ 181↓ 1480.2%
20M
9:44/mi
2:47:29
↑ 64↓ 500.2%
21M
11:06/mi
2:58:35
↑ 106↓ 241.6%
35K· 21.75 mi
9:21/mi
3:05:35
↑ 17↓ 861.7%
23M
10:13/mi
3:18:23
↑ 23↓ 630.6%
24M
10:11/mi
3:28:34
↓ 821.3%
40K· 24.85 mi
10:39/mi
3:37:40
↓ 200.3%
25.2M
11:56/mi
3:41:47
↑ 13↓ 160.2%
Finish· 26.22 mi
10:35/mi
3:52:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:34
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time2:05:00
Pace9:32 /mi
📊Positive Split: 16.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:1127:228:4927:22
8:49
-
10K
6.21 mi12:09:5852:098:2424:47
7:59
-0:50
15K
9.32 mi12:34:441:16:558:1524:46
7:58
-0:01
20K
12.43 mi12:59:581:42:098:1325:14
8:07
+0:09
Half
13.11 mi13:05:231:47:348:125:25
7:56
-0:11
25K
15.53 mi13:25:022:07:138:1119:39
8:06
+0:10
30K
18.64 mi13:52:042:34:158:1627:02
8:42
+0:36
20M
20.00 mi14:05:182:47:298:2213:14
9:44
+1:02
21M
21.00 mi14:16:242:58:358:3011:06
11:06
+1:22
35K
21.75 mi14:23:243:05:358:327:00
9:21
-1:45
23M
23.00 mi14:36:123:18:238:3812:48
10:13
+0:52
24M
24.00 mi14:46:233:28:348:4110:11
10:11
-0:02
40K
24.85 mi14:55:293:37:408:459:06
10:39
+0:28
25.2M
25.20 mi14:59:363:41:478:484:07
11:56
+1:17
Finish
26.22 mi15:10:233:52:348:5310:47
10:35
-1:21

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

7:56 /mi

Average Pace

8:53 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:53

55% of race

Time at Steady Pace

47:36

20% of race

Time at Slower Pace

58:05

25% 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 mi11:45:1127:228:4927:22
8:49
#19514
10K
6.21 mi12:09:5852:098:2424:47
7:59
#17173
15K
9.32 mi12:34:441:16:558:1524:46
7:58
#16202
20K
12.43 mi12:59:581:42:098:1325:14
8:07
#15715
Half
13.11 mi13:05:231:47:348:125:25
7:56
#15633
25K
15.53 mi13:25:022:07:138:1119:39
8:06
#15282
30K
18.64 mi13:52:042:34:158:1627:02
8:42
#15294
20M
20.00 mi14:05:182:47:298:2213:14
9:44
#15699
21M
21.00 mi14:16:242:58:358:3011:06
11:06
#16224
35K
21.75 mi14:23:243:05:358:327:00
9:21
#16348
23M
23.00 mi14:36:123:18:238:3812:48
10:13
#16735
24M
24.00 mi14:46:233:28:348:4110:11
10:11
#17038
40K
24.85 mi14:55:293:37:408:459:06
10:39
#17341
25.2M
25.20 mi14:59:363:41:478:484:07
11:56
#17523
Finish
26.22 mi15:10:233:52:348:5310:47
10:35
#17901
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi195147522752214173(Top 53%)4190(Top 37%)4190(Top 231%)
10K6.21 mi3.10 mi17173+23416037+14856037+148514664(Top 55%)4462(Top 39%)4462(Top 246%)
15K9.32 mi3.11 mi16202+9715412+6255412+62514173(Top 53%)4190(Top 37%)4190(Top 231%)
20K12.43 mi3.11 mi15715+4875125+2875125+28714392(Top 54%)4345(Top 38%)4345(Top 239%)
Half13.11 mi0.68 mi15633+825080+455080+4513989(Top 53%)4098(Top 36%)4098(Top 226%)
25K15.53 mi2.42 mi15282+3514887+1934887+19313563(Top 51%)3963(Top 35%)3963(Top 218%)
30K18.64 mi3.11 mi15294-124940-534940-5315530(Top 58%)5236(Top 46%)5236(Top 288%)
20M20.00 mi1.36 mi15699-4055208-2685208-26819668(Top 74%)7674(Top 67%)7674(Top 422%)
21M21.00 mi1.00 mi16224-5255552-3445552-34421030(Top 79%)8474(Top 74%)8474(Top 466%)
35K21.75 mi0.75 mi16348-1245631-795631-7919376(Top 73%)7584(Top 66%)7584(Top 417%)
23M23.00 mi1.25 mi16735-3875866-2355866-23520639(Top 78%)8312(Top 73%)8312(Top 457%)
24M24.00 mi1.00 mi17038-3036069-2036069-20321289(Top 80%)8714(Top 76%)8714(Top 480%)
40K24.85 mi0.85 mi17341-3036252-1836252-18321566(Top 81%)8917(Top 78%)8917(Top 491%)
25.2M25.20 mi0.35 mi17523-1826364-1126364-11222377(Top 84%)9325(Top 82%)9325(Top 513%)
Finish26.22 mi1.02 mi17901-3786593-2296593-22923171(Top 87%)9731(Top 85%)9731(Top 536%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14173

Females

4190

F45-49

4190

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

14664

Females

4462

F45-49

4462

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14173

Females

4190

F45-49

4190

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14392

Females

4345

F45-49

4345

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

13989

Females

4098

F45-49

4098

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13563

Females

3963

F45-49

3963

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15530

Females

5236

F45-49

5236

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

19668

Females

7674

F45-49

7674

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

21030

Females

8474

F45-49

8474

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

19376

Females

7584

F45-49

7584

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20639

Females

8312

F45-49

8312

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

21289

Females

8714

F45-49

8714

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21566

Females

8917

F45-49

8917

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22377

Females

9325

F45-49

9325

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

23171

Females

9731

F45-49

9731

Passing Analysis

Category:
Athletes Passed
4580
Passed By
2967
Net Change
+1613
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19514
5K → 10K235110+2341#19514#17173
10K → 15K98817+971#17173#16202
15K → 20K50821+487#16202#15715
20K → Half864+82#15715#15633
Half → 25K36413+351#15633#15282
25K → 30K181193-12#15282#15294
30K → 20M18423-405#15294#15699
20M → 21M14539-525#15699#16224
21M → 35K20144-124#16224#16348
35K → 23M18405-387#16348#16735
23M → 24M11314-303#16735#17038
24M → 40K15318-303#17038#17341
40K → 25.2M4186-182#17341#17523
25.2M → Finish2380-378#17523#17901
TOTALS45802967+1613
📊

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