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BOSTON MARATHON 2023

Caroline Muirhead

Bib: 26887•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
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
9:31/mi
29:35
↑ 97↓ 3451.5%
10K· 6.21 mi
8:38/mi
56:24
↑ 79↓ 1380.4%
15K· 9.32 mi
8:28/mi
1:22:43
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:49:27
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:55:20
↑ 19↓ 370.5%
25K· 15.53 mi
8:56/mi
2:17:00
↑ 66↓ 880.2%
30K· 18.64 mi
9:17/mi
2:45:49
↑ 181↓ 1480.2%
20M
9:23/mi
2:58:34
↑ 64↓ 500.2%
21M
9:43/mi
3:08:17
↑ 106↓ 241.6%
35K· 21.75 mi
9:08/mi
3:15:07
↑ 17↓ 861.7%
23M
9:25/mi
3:26:55
↑ 23↓ 630.6%
24M
9:18/mi
3:36:13
↓ 821.3%
40K· 24.85 mi
9:24/mi
3:44:15
↓ 200.3%
25.2M
9:40/mi
3:47:35
↑ 13↓ 160.2%
Finish· 26.22 mi
8:19/mi
3:56:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:20
Pace8:48 /mi
2nd Half
Distance13.11 mi
Time2:00:44
Pace9:13 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3229:359:3129:35
9:31
-
10K
6.21 mi12:13:2156:249:0526:49
8:38
-0:53
15K
9.32 mi12:39:401:22:438:5226:19
8:28
-0:10
20K
12.43 mi13:06:241:49:278:4826:44
8:36
+0:08
Half
13.11 mi13:12:171:55:208:485:53
8:37
+0:01
25K
15.53 mi13:33:572:17:008:4921:40
8:56
+0:19
30K
18.64 mi14:02:462:45:498:5428:49
9:17
+0:21
20M
20.00 mi14:15:312:58:348:5612:45
9:23
+0:06
21M
21.00 mi14:25:143:08:178:589:43
9:43
+0:20
35K
21.75 mi14:32:043:15:078:586:50
9:08
-0:35
23M
23.00 mi14:43:523:26:559:0011:48
9:25
+0:17
24M
24.00 mi14:53:103:36:139:019:18
9:18
-0:07
40K
24.85 mi15:01:123:44:159:018:02
9:24
+0:06
25.2M
25.20 mi15:04:323:47:359:023:20
9:40
+0:16
Finish
26.22 mi15:13:013:56:049:018:29
8:19
-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

8:19 /mi

Average Pace

9:01 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:44

52% of race

Time at Steady Pace

1:53:20

48% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:00 /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 mi11:46:3229:359:3129:35
9:31
#22158
10K
6.21 mi12:13:2156:249:0526:49
8:38
#20966
15K
9.32 mi12:39:401:22:438:5226:19
8:28
#20001
20K
12.43 mi13:06:241:49:278:4826:44
8:36
#19357
Half
13.11 mi13:12:171:55:208:485:53
8:37
#19306
25K
15.53 mi13:33:572:17:008:4921:40
8:56
#19200
30K
18.64 mi14:02:462:45:498:5428:49
9:17
#19080
20M
20.00 mi14:15:312:58:348:5612:45
9:23
#19018
21M
21.00 mi14:25:143:08:178:589:43
9:43
#18897
35K
21.75 mi14:32:043:15:078:586:50
9:08
#18883
23M
23.00 mi14:43:523:26:559:0011:48
9:25
#18811
24M
24.00 mi14:53:103:36:139:019:18
9:18
#18792
40K
24.85 mi15:01:123:44:159:018:02
9:24
#18771
25.2M
25.20 mi15:04:323:47:359:023:20
9:40
#18730
Finish
26.22 mi15:13:013:56:049:018:29
8:19
#18571
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi221588956895617621(Top 66%)6287(Top 55%)6287(Top 129%)
10K6.21 mi3.10 mi20966+11928304+6528304+65219030(Top 71%)7097(Top 62%)7097(Top 145%)
15K9.32 mi3.11 mi20001+9657739+5657739+56517621(Top 66%)6287(Top 55%)6287(Top 129%)
20K12.43 mi3.11 mi19357+6447342+3977342+39717535(Top 66%)6252(Top 55%)6252(Top 128%)
Half13.11 mi0.68 mi19306+517307+357307+3518518(Top 70%)6795(Top 59%)6795(Top 139%)
25K15.53 mi2.42 mi19200+1067240+677240+6718655(Top 70%)6936(Top 61%)6936(Top 142%)
30K18.64 mi3.11 mi19080+1207183+577183+5718514(Top 70%)6926(Top 61%)6926(Top 142%)
20M20.00 mi1.36 mi19018+627169+147169+1418400(Top 69%)6968(Top 61%)6968(Top 143%)
21M21.00 mi1.00 mi18897+1217104+657104+6516944(Top 64%)6160(Top 54%)6160(Top 126%)
35K21.75 mi0.75 mi18883+147109-57109-518488(Top 69%)7096(Top 62%)7096(Top 145%)
23M23.00 mi1.25 mi18811+727081+287081+2818032(Top 68%)6885(Top 60%)6885(Top 141%)
24M24.00 mi1.00 mi18792+197079+27079+218470(Top 69%)7147(Top 63%)7147(Top 146%)
40K24.85 mi0.85 mi18771+217082-37082-317956(Top 67%)6928(Top 61%)6928(Top 142%)
25.2M25.20 mi0.35 mi18730+417065+177065+1716044(Top 60%)5908(Top 52%)5908(Top 121%)
Finish26.22 mi1.02 mi18571+1596978+876978+8714299(Top 54%)4911(Top 43%)4911(Top 101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

17621

Females

6287

F18-39

6287

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

19030

Females

7097

F18-39

7097

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

17621

Females

6287

F18-39

6287

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17535

Females

6252

F18-39

6252

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18518

Females

6795

F18-39

6795

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18655

Females

6936

F18-39

6936

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

18514

Females

6926

F18-39

6926

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18400

Females

6968

F18-39

6968

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

16944

Females

6160

F18-39

6160

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

18488

Females

7096

F18-39

7096

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

18032

Females

6885

F18-39

6885

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18470

Females

7147

F18-39

7147

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17956

Females

6928

F18-39

6928

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16044

Females

5908

F18-39

5908

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

14299

Females

4911

F18-39

4911

Passing Analysis

Category:
Athletes Passed
4043
Passed By
456
Net Change
+3587
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22158
5K → 10K120311+1192#22158#20966
10K → 15K9705+965#20966#20001
15K → 20K6506+644#20001#19357
20K → Half587+51#19357#19306
Half → 25K17670+106#19306#19200
25K → 30K225105+120#19200#19080
30K → 20M11553+62#19080#19018
20M → 21M14726+121#19018#18897
21M → 35K4733+14#18897#18883
35K → 23M11240+72#18883#18811
23M → 24M6849+19#18811#18792
24M → 40K5938+21#18792#18771
40K → 25.2M476+41#18771#18730
25.2M → Finish1667+159#18730#18571
TOTALS4043456+3587
📊

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