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BOSTON MARATHON 2023

Chelsey Mccarthy

Bib: 14691•F

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0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 15%
Division (F18-39)
#0 / 4884
Top 27%
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
7:34/mi
23:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:19/mi
46:14
↑ 79↓ 1380.4%
15K· 9.32 mi
7:20/mi
1:09:01
↑ 67↓ 78
20K· 12.43 mi
7:37/mi
1:32:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:37:53
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:56:17
↑ 66↓ 880.2%
30K· 18.64 mi
7:45/mi
2:20:22
↑ 181↓ 1480.2%
20M
7:46/mi
2:30:55
↑ 64↓ 500.2%
21M
8:08/mi
2:39:03
↑ 106↓ 241.6%
35K· 21.75 mi
7:38/mi
2:44:46
↑ 17↓ 861.7%
23M
8:22/mi
2:55:15
↑ 23↓ 630.6%
24M
7:57/mi
3:03:12
↓ 821.3%
40K· 24.85 mi
7:58/mi
3:10:01
↓ 200.3%
25.2M
7:41/mi
3:12:40
↑ 13↓ 160.2%
Finish· 26.22 mi
7:00/mi
3:19:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:53
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:41:55
Pace7:46 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4623:297:3423:29
7:34
-
10K
6.21 mi11:15:3146:147:2622:45
7:19
-0:15
15K
9.32 mi11:38:181:09:017:2422:47
7:20
+0:01
20K
12.43 mi12:01:571:32:407:2723:39
7:37
+0:17
Half
13.11 mi12:07:101:37:537:285:13
7:39
+0:02
25K
15.53 mi12:25:341:56:177:2918:24
7:35
-0:04
30K
18.64 mi12:49:392:20:227:3224:05
7:45
+0:10
20M
20.00 mi13:00:122:30:557:3310:33
7:46
+0:01
21M
21.00 mi13:08:202:39:037:348:08
8:08
+0:22
35K
21.75 mi13:14:032:44:467:355:43
7:38
-0:30
23M
23.00 mi13:24:322:55:157:3710:29
8:22
+0:44
24M
24.00 mi13:32:293:03:127:387:57
7:57
-0:25
40K
24.85 mi13:39:183:10:017:396:49
7:58
+0:01
25.2M
25.20 mi13:41:573:12:407:392:39
7:41
-0:17
Finish
26.22 mi13:49:053:19:487:387:08
7:00
-0:41

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

7:00 /mi

Average Pace

7:38 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:47

66% of race

Time at Steady Pace

57:32

29% of race

Time at Slower Pace

10:29

5% of race

Average Pace: 7:37 /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 mi10:52:4623:297:3423:29
7:34
#10155
10K
6.21 mi11:15:3146:147:2622:45
7:19
#9508
15K
9.32 mi11:38:181:09:017:2422:47
7:20
#9224
20K
12.43 mi12:01:571:32:407:2723:39
7:37
#9463
Half
13.11 mi12:07:101:37:537:285:13
7:39
#9570
25K
15.53 mi12:25:341:56:177:2918:24
7:35
#9523
30K
18.64 mi12:49:392:20:227:3224:05
7:45
#9398
20M
20.00 mi13:00:122:30:557:3310:33
7:46
#9325
21M
21.00 mi13:08:202:39:037:348:08
8:08
#9215
35K
21.75 mi13:14:032:44:467:355:43
7:38
#9212
23M
23.00 mi13:24:322:55:157:3710:29
8:22
#9369
24M
24.00 mi13:32:293:03:127:387:57
7:57
#9429
40K
24.85 mi13:39:183:10:017:396:49
7:58
#9416
25.2M
25.20 mi13:41:573:12:407:392:39
7:41
#9317
Finish
26.22 mi13:49:053:19:487:387:08
7:00
#9135
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10155193619368841(Top 33%)1384(Top 12%)1384(Top 28%)
10K6.21 mi3.10 mi9508+6471615+3211615+3219043(Top 34%)1425(Top 12%)1425(Top 29%)
15K9.32 mi3.11 mi9224+2841510+1051510+1058841(Top 33%)1384(Top 12%)1384(Top 28%)
20K12.43 mi3.11 mi9463-2391617-1071617-10710181(Top 38%)1991(Top 17%)1991(Top 41%)
Half13.11 mi0.68 mi9570-1071654-371654-3711413(Top 43%)2554(Top 22%)2554(Top 52%)
25K15.53 mi2.42 mi9523+471660-61660-69472(Top 36%)1763(Top 15%)1763(Top 36%)
30K18.64 mi3.11 mi9398+1251652+81652+89008(Top 34%)1711(Top 15%)1711(Top 35%)
20M20.00 mi1.36 mi9325+731645+71645+78608(Top 32%)1641(Top 14%)1641(Top 34%)
21M21.00 mi1.00 mi9215+1101621+241621+248227(Top 31%)1623(Top 14%)1623(Top 33%)
35K21.75 mi0.75 mi9212+31635-141635-149585(Top 36%)2170(Top 19%)2170(Top 44%)
23M23.00 mi1.25 mi9369-1571719-841719-8412399(Top 47%)3729(Top 33%)3729(Top 76%)
24M24.00 mi1.00 mi9429-601769-501769-5010889(Top 41%)3020(Top 26%)3020(Top 62%)
40K24.85 mi0.85 mi9416+131798-291798-299883(Top 37%)2581(Top 23%)2581(Top 53%)
25.2M25.20 mi0.35 mi9317+991764+341764+344900(Top 18%)707(Top 6%)707(Top 14%)
Finish26.22 mi1.02 mi9135+1821704+601704+605250(Top 20%)810(Top 7%)810(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

8841

Females

1384

F18-39

1384

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9043

Females

1425

F18-39

1425

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

8841

Females

1384

F18-39

1384

15K→20K

9.3 - 12.4 mi

Top 38%
×5story building
+106ft-86ft

Overall

10181

Females

1991

F18-39

1991

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

11413

Females

2554

F18-39

2554

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9472

Females

1763

F18-39

1763

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9008

Females

1711

F18-39

1711

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8608

Females

1641

F18-39

1641

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8227

Females

1623

F18-39

1623

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

9585

Females

2170

F18-39

2170

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

12399

Females

3729

F18-39

3729

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10889

Females

3020

F18-39

3020

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9883

Females

2581

F18-39

2581

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4900

Females

707

F18-39

707

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5250

Females

810

F18-39

810

Passing Analysis

Category:
Athletes Passed
2262*
Passed By
1242
Net Change
+1020
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10155
5K → 10K730*83+647#10155#9508
10K → 15K33147+284#9508#9224
15K → 20K70309-239#9224#9463
20K → Half3110-107#9463#9570
Half → 25K14194+47#9570#9523
25K → 30K231*106+125#9523#9398
30K → 20M11340+73#9398#9325
20M → 21M14232+110#9325#9215
21M → 35K4744+3#9215#9212
35K → 23M44201-157#9212#9369
23M → 24M53113-60#9369#9429
24M → 40K7259+13#9429#9416
40K → 25.2M1001+99#9416#9317
25.2M → Finish1853+182#9317#9135
TOTALS2262*1242+1020

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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