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BOSTON MARATHON 2023

Caroline Macdonald

Bib: 23187•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
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
9:16/mi
28:46
↑ 97↓ 3451.5%
10K· 6.21 mi
9:16/mi
57:33
↑ 79↓ 1380.4%
15K· 9.32 mi
9:18/mi
1:26:26
↑ 67↓ 78
20K· 12.43 mi
9:48/mi
1:56:54
↑ 106↓ 860.1%
Half· 13.11 mi
11:44/mi
2:04:54
↑ 19↓ 370.5%
25K· 15.53 mi
10:01/mi
2:29:11
↑ 66↓ 880.2%
30K· 18.64 mi
10:03/mi
3:00:25
↑ 181↓ 1480.2%
20M
10:40/mi
3:14:55
↑ 64↓ 500.2%
21M
10:23/mi
3:25:18
↑ 106↓ 241.6%
35K· 21.75 mi
11:22/mi
3:33:48
↑ 17↓ 861.7%
23M
11:05/mi
3:47:41
↑ 23↓ 630.6%
24M
14:34/mi
4:02:15
↓ 821.3%
40K· 24.85 mi
16:06/mi
4:16:01
↓ 200.3%
25.2M
18:28/mi
4:22:23
↑ 13↓ 160.2%
Finish· 26.22 mi
13:41/mi
4:36:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:54
Pace9:32 /mi
2nd Half
Distance13.11 mi
Time2:31:26
Pace11:33 /mi
📊Positive Split: 21.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:5428:469:1628:46
9:16
-
10K
6.21 mi11:53:4157:339:1628:47
9:16
0:00
15K
9.32 mi12:22:341:26:269:1628:53
9:18
+0:02
20K
12.43 mi12:53:021:56:549:2430:28
9:48
+0:30
Half
13.11 mi13:01:022:04:549:328:00
11:44
+1:56
25K
15.53 mi13:25:192:29:119:3624:17
10:01
-1:43
30K
18.64 mi13:56:333:00:259:4131:14
10:03
+0:02
20M
20.00 mi14:11:033:14:559:4514:30
10:40
+0:37
21M
21.00 mi14:21:263:25:189:4710:23
10:23
-0:17
35K
21.75 mi14:29:563:33:489:508:30
11:22
+0:59
23M
23.00 mi14:43:493:47:419:5413:53
11:05
-0:17
24M
24.00 mi14:58:234:02:1510:0614:34
14:34
+3:29
40K
24.85 mi15:12:094:16:0110:1813:46
16:06
+1:32
25.2M
25.20 mi15:18:314:22:2310:256:22
18:28
+2:22
Finish
26.22 mi15:32:284:36:2010:3313:57
13:41
-4:47

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

9:16 /mi

Average Pace

10:33 /mi

Slowest Pace

18:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:26

31% of race

Time at Steady Pace

2:21:15

51% of race

Time at Slower Pace

48:39

18% of race

Average Pace: 10:32 /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 mi11:24:5428:469:1628:46
9:16
#21417
10K
6.21 mi11:53:4157:339:1628:47
9:16
#21616
15K
9.32 mi12:22:341:26:269:1628:53
9:18
#21613
20K
12.43 mi12:53:021:56:549:2430:28
9:48
#21830
Half
13.11 mi13:01:022:04:549:328:00
11:44
#22195
25K
15.53 mi13:25:192:29:119:3624:17
10:01
#22213
30K
18.64 mi13:56:333:00:259:4131:14
10:03
#21999
20M
20.00 mi14:11:033:14:559:4514:30
10:40
#22014
21M
21.00 mi14:21:263:25:189:4710:23
10:23
#21867
35K
21.75 mi14:29:563:33:489:508:30
11:22
#21974
23M
23.00 mi14:43:493:47:419:5413:53
11:05
#22012
24M
24.00 mi14:58:234:02:1510:0614:34
14:34
#22415
40K
24.85 mi15:12:094:16:0110:1813:46
16:06
#22790
25.2M
25.20 mi15:18:314:22:2310:256:22
18:28
#22956
Finish
26.22 mi15:32:284:36:2010:3313:57
13:41
#23233
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi214178589858921629(Top 81%)8574(Top 75%)8574(Top 1627%)
10K6.21 mi3.10 mi21616-1998645-568645-5621822(Top 82%)8726(Top 76%)8726(Top 1656%)
15K9.32 mi3.11 mi21613+38623+228623+2221629(Top 81%)8574(Top 75%)8574(Top 1627%)
20K12.43 mi3.11 mi21830-2178729-1068729-10622432(Top 84%)9044(Top 79%)9044(Top 1716%)
Half13.11 mi0.68 mi22195-3658936-2078936-20725673(Top 96%)10886(Top 95%)10886(Top 2066%)
25K15.53 mi2.42 mi22213-188948-128948-1222252(Top 84%)8975(Top 79%)8975(Top 1703%)
30K18.64 mi3.11 mi21999+2148833+1158833+11521172(Top 80%)8444(Top 74%)8444(Top 1602%)
20M20.00 mi1.36 mi22014-158855-228855-2222094(Top 83%)9039(Top 79%)9039(Top 1715%)
21M21.00 mi1.00 mi21867+1478780+758780+7519248(Top 72%)7496(Top 66%)7496(Top 1422%)
35K21.75 mi0.75 mi21974-1078842-628842-6223905(Top 90%)10079(Top 88%)10079(Top 1913%)
23M23.00 mi1.25 mi22012-388878-368878-3622516(Top 85%)9336(Top 82%)9336(Top 1772%)
24M24.00 mi1.00 mi22415-4039114-2369114-23626288(Top 99%)11291(Top 99%)11291(Top 2143%)
40K24.85 mi0.85 mi22790-3759330-2169330-21626429(Top 99%)11349(Top 99%)11349(Top 2154%)
25.2M25.20 mi0.35 mi22956-1669418-889418-8826535(Top 100%)11390(Top 100%)11390(Top 2161%)
Finish26.22 mi1.02 mi23233-2779573-1559573-15526266(Top 99%)11297(Top 99%)11297(Top 2144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21story building
+97ft-345ft

Overall

21629

Females

8574

F60-64

8574

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

21822

Females

8726

F60-64

8726

10K→15K

6.2 - 9.3 mi

Top 81%
×3story building
+67ft-78ft

Overall

21629

Females

8574

F60-64

8574

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

22432

Females

9044

F60-64

9044

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

25673

Females

10886

F60-64

10886

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

22252

Females

8975

F60-64

8975

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

21172

Females

8444

F60-64

8444

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

22094

Females

9039

F60-64

9039

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

19248

Females

7496

F60-64

7496

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

23905

Females

10079

F60-64

10079

35K→23M

21.8 - 23.0 mi

Top 85%
×5story building
+23ft-63ft

Overall

22516

Females

9336

F60-64

9336

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

26288

Females

11291

F60-64

11291

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26429

Females

11349

F60-64

11349

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

26535

Females

11390

F60-64

11390

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

26266

Females

11297

F60-64

11297

Passing Analysis

Category:
Athletes Passed
1036
Passed By
2852
Net Change
-1816
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21417
5K → 10K186385-199#21417#21616
10K → 15K164161+3#21616#21613
15K → 20K60277-217#21613#21830
20K → Half1366-365#21830#22195
Half → 25K101119-18#22195#22213
25K → 30K25238+214#22213#21999
30K → 20M5974-15#21999#22014
20M → 21M1569+147#22014#21867
21M → 35K7114-107#21867#21974
35K → 23M4078-38#21974#22012
23M → 24M3406-403#22012#22415
24M → 40K1376-375#22415#22790
40K → 25.2M0166-166#22790#22956
25.2M → Finish6283-277#22956#23233
TOTALS10362852-1816
📊

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