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BOSTON MARATHON 2023

Catherine Beck

Bib: 18236•F

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 45%
Gender (Female)
#0 / 11423
Top 28%
Division (F18-39)
#0 / 4884
Top 46%
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
8:14/mi
25:36
↑ 97↓ 3451.5%
10K· 6.21 mi
8:05/mi
50:44
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:15:35
↑ 67↓ 78
20K· 12.43 mi
8:03/mi
1:40:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:45:58
↑ 19↓ 370.5%
25K· 15.53 mi
7:58/mi
2:05:18
↑ 66↓ 880.2%
30K· 18.64 mi
8:04/mi
2:30:22
↑ 181↓ 1480.2%
20M
8:02/mi
2:41:17
↑ 64↓ 500.2%
21M
8:22/mi
2:49:39
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:55:20
↑ 17↓ 861.7%
23M
7:49/mi
3:05:07
↑ 23↓ 630.6%
24M
7:32/mi
3:12:39
↓ 821.3%
40K· 24.85 mi
7:35/mi
3:19:08
↓ 200.3%
25.2M
8:25/mi
3:22:02
↑ 13↓ 160.2%
Finish· 26.22 mi
7:21/mi
3:29:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:45:58
Pace8:05 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:43:33
Pace7:54 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4325:368:1425:36
8:14
-
10K
6.21 mi11:41:5150:448:1025:08
8:05
-0:09
15K
9.32 mi12:06:421:15:358:0724:51
8:00
-0:05
20K
12.43 mi12:31:421:40:358:0625:00
8:03
+0:03
Half
13.11 mi12:37:051:45:588:055:23
7:53
-0:10
25K
15.53 mi12:56:252:05:188:0419:20
7:58
+0:05
30K
18.64 mi13:21:292:30:228:0425:04
8:04
+0:06
20M
20.00 mi13:32:242:41:178:0410:55
8:02
-0:02
21M
21.00 mi13:40:462:49:398:058:22
8:22
+0:20
35K
21.75 mi13:46:272:55:208:045:41
7:36
-0:46
23M
23.00 mi13:56:143:05:078:039:47
7:49
+0:13
24M
24.00 mi14:03:463:12:398:027:32
7:32
-0:17
40K
24.85 mi14:10:153:19:088:016:29
7:35
+0:03
25.2M
25.20 mi14:13:093:22:028:012:54
8:25
+0:50
Finish
26.22 mi14:20:383:29:318:007:29
7:21
-1:04

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

7:21 /mi

Average Pace

8:00 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:39

82% of race

Time at Steady Pace

36:52

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:59 /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 mi11:16:4325:368:1425:36
8:14
#15723
10K
6.21 mi11:41:5150:448:1025:08
8:05
#15578
15K
9.32 mi12:06:421:15:358:0724:51
8:00
#15180
20K
12.43 mi12:31:421:40:358:0625:00
8:03
#14815
Half
13.11 mi12:37:051:45:588:055:23
7:53
#14753
25K
15.53 mi12:56:252:05:188:0419:20
7:58
#14389
30K
18.64 mi13:21:292:30:228:0425:04
8:04
#13826
20M
20.00 mi13:32:242:41:178:0410:55
8:02
#13550
21M
21.00 mi13:40:462:49:398:058:22
8:22
#13287
35K
21.75 mi13:46:272:55:208:045:41
7:36
#13111
23M
23.00 mi13:56:143:05:078:039:47
7:49
#12835
24M
24.00 mi14:03:463:12:398:027:32
7:32
#12587
40K
24.85 mi14:10:153:19:088:016:29
7:35
#12381
25.2M
25.20 mi14:13:093:22:028:012:54
8:25
#12318
Finish
26.22 mi14:20:383:29:318:007:29
7:21
#12106
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi157235103510314376(Top 54%)4307(Top 38%)4307(Top 88%)
10K6.21 mi3.10 mi15578+1455013+905013+9015439(Top 58%)4925(Top 43%)4925(Top 101%)
15K9.32 mi3.11 mi15180+3984768+2454768+24514376(Top 54%)4307(Top 38%)4307(Top 88%)
20K12.43 mi3.11 mi14815+3654564+2044564+20413812(Top 52%)3992(Top 35%)3992(Top 82%)
Half13.11 mi0.68 mi14753+624528+364528+3613522(Top 51%)3798(Top 33%)3798(Top 78%)
25K15.53 mi2.42 mi14389+3644337+1914337+19112537(Top 47%)3377(Top 30%)3377(Top 69%)
30K18.64 mi3.11 mi13826+5634032+3054032+30511439(Top 43%)2871(Top 25%)2871(Top 59%)
20M20.00 mi1.36 mi13550+2763891+1413891+14110556(Top 40%)2523(Top 22%)2523(Top 52%)
21M21.00 mi1.00 mi13287+2633745+1463745+1469686(Top 36%)2242(Top 20%)2242(Top 46%)
35K21.75 mi0.75 mi13111+1763658+873658+879329(Top 35%)2082(Top 18%)2082(Top 43%)
23M23.00 mi1.25 mi12835+2763528+1303528+1308552(Top 32%)1827(Top 16%)1827(Top 37%)
24M24.00 mi1.00 mi12587+2483402+1263402+1267982(Top 30%)1682(Top 15%)1682(Top 34%)
40K24.85 mi0.85 mi12381+2063301+1013301+1017267(Top 27%)1486(Top 13%)1486(Top 30%)
25.2M25.20 mi0.35 mi12318+633278+233278+239073(Top 34%)2299(Top 20%)2299(Top 47%)
Finish26.22 mi1.02 mi12106+2123182+963182+967445(Top 28%)1613(Top 14%)1613(Top 33%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14376

Females

4307

F18-39

4307

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

15439

Females

4925

F18-39

4925

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14376

Females

4307

F18-39

4307

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13812

Females

3992

F18-39

3992

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13522

Females

3798

F18-39

3798

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

12537

Females

3377

F18-39

3377

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11439

Females

2871

F18-39

2871

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

10556

Females

2523

F18-39

2523

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

9686

Females

2242

F18-39

2242

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9329

Females

2082

F18-39

2082

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8552

Females

1827

F18-39

1827

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

7982

Females

1682

F18-39

1682

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7267

Females

1486

F18-39

1486

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9073

Females

2299

F18-39

2299

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7445

Females

1613

F18-39

1613

Passing Analysis

Category:
Athletes Passed
3990
Passed By
373
Net Change
+3617
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15723
5K → 10K374229+145#15723#15578
10K → 15K44244+398#15578#15180
15K → 20K40136+365#15180#14815
20K → Half708+62#14815#14753
Half → 25K38117+364#14753#14389
25K → 30K57411+563#14389#13826
30K → 20M2793+276#13826#13550
20M → 21M2696+263#13550#13287
21M → 35K1793+176#13287#13111
35K → 23M2804+276#13111#12835
23M → 24M2502+248#12835#12587
24M → 40K2060+206#12587#12381
40K → 25.2M674+63#12381#12318
25.2M → Finish2186+212#12318#12106
TOTALS3990373+3617
📊

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