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BOSTON MARATHON 2023

Cathy Maclean

Bib: 24509•F

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F70-74)
#0 / 62
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
10:14/mi
31:49
↑ 97↓ 3451.5%
10K· 6.21 mi
10:17/mi
1:03:45
↑ 79↓ 1380.4%
15K· 9.32 mi
10:38/mi
1:36:47
↑ 67↓ 78
20K· 12.43 mi
11:37/mi
2:12:52
↑ 106↓ 860.1%
Half· 13.11 mi
11:10/mi
2:20:29
↑ 19↓ 370.5%
25K· 15.53 mi
11:51/mi
2:49:12
↑ 66↓ 880.2%
30K· 18.64 mi
12:20/mi
3:27:32
↑ 181↓ 1480.2%
20M
12:28/mi
3:44:29
↑ 64↓ 500.2%
21M
14:48/mi
3:59:17
↑ 106↓ 241.6%
35K· 21.75 mi
11:14/mi
4:07:41
↑ 17↓ 861.7%
23M
11:35/mi
4:22:11
↑ 23↓ 630.6%
24M
12:00/mi
4:34:11
↓ 821.3%
40K· 24.85 mi
12:04/mi
4:44:30
↓ 200.3%
25.2M
13:03/mi
4:49:00
↑ 13↓ 160.2%
Finish· 26.22 mi
11:45/mi
5:00:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:29
Pace10:43 /mi
2nd Half
Distance13.11 mi
Time2:40:29
Pace12:15 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:1931:4910:1431:49
10:14
-
10K
6.21 mi12:19:151:03:4510:1631:56
10:17
+0:03
15K
9.32 mi12:52:171:36:4710:2333:02
10:38
+0:21
20K
12.43 mi13:28:222:12:5210:4136:05
11:37
+0:59
Half
13.11 mi13:35:592:20:2910:437:37
11:10
-0:27
25K
15.53 mi14:04:422:49:1210:5428:43
11:51
+0:41
30K
18.64 mi14:43:023:27:3211:0838:20
12:20
+0:29
20M
20.00 mi14:59:593:44:2911:1316:57
12:28
+0:08
21M
21.00 mi15:14:473:59:1711:2414:48
14:48
+2:20
35K
21.75 mi15:23:114:07:4111:238:24
11:14
-3:34
23M
23.00 mi15:37:414:22:1111:2414:30
11:35
+0:21
24M
24.00 mi15:49:414:34:1111:2512:00
12:00
+0:25
40K
24.85 mi16:00:004:44:3011:2710:19
12:04
+0:04
25.2M
25.20 mi16:04:304:49:0011:284:30
13:03
+0:59
Finish
26.22 mi16:16:285:00:5811:2911:58
11:45
-1:18

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

10:14 /mi

Average Pace

11:29 /mi

Slowest Pace

14:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:24

35% of race

Time at Steady Pace

2:01:59

41% of race

Time at Slower Pace

1:14:35

25% of race

Average Pace: 11:29 /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 mi11:47:1931:4910:1431:49
10:14
#24062
10K
6.21 mi12:19:151:03:4510:1631:56
10:17
#24182
15K
9.32 mi12:52:171:36:4710:2333:02
10:38
#24396
20K
12.43 mi13:28:222:12:5210:4136:05
11:37
#24741
Half
13.11 mi13:35:592:20:2910:437:37
11:10
#24787
25K
15.53 mi14:04:422:49:1210:5428:43
11:51
#24844
30K
18.64 mi14:43:023:27:3211:0838:20
12:20
#24883
20M
20.00 mi14:59:593:44:2911:1316:57
12:28
#24866
21M
21.00 mi15:14:473:59:1711:2414:48
14:48
#24959
35K
21.75 mi15:23:114:07:4111:238:24
11:14
#24919
23M
23.00 mi15:37:414:22:1111:2414:30
11:35
#24855
24M
24.00 mi15:49:414:34:1111:2512:00
12:00
#24849
40K
24.85 mi16:00:004:44:3011:2710:19
12:04
#24837
25.2M
25.20 mi16:04:304:49:0011:284:30
13:03
#24833
Finish
26.22 mi16:16:285:00:5811:2911:58
11:45
#24866
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF70-74Seg. OverallSeg. FemalesSeg. F70-74
5K3.11 mi3.11 mi240629925992524696(Top 93%)10290(Top 90%)10290(Top 16597%)
10K6.21 mi3.10 mi24182-1209987-629987-6224268(Top 91%)10040(Top 88%)10040(Top 16194%)
15K9.32 mi3.11 mi24396-21410105-11810105-11824696(Top 93%)10290(Top 90%)10290(Top 16597%)
20K12.43 mi3.11 mi24741-34510311-20610311-20625372(Top 95%)10700(Top 94%)10700(Top 17258%)
Half13.11 mi0.68 mi24787-4610339-2810339-2825171(Top 95%)10591(Top 93%)10591(Top 17082%)
25K15.53 mi2.42 mi24844-5710381-4210381-4225026(Top 94%)10527(Top 92%)10527(Top 16979%)
30K18.64 mi3.11 mi24883-3910423-4210423-4224853(Top 93%)10486(Top 92%)10486(Top 16913%)
20M20.00 mi1.36 mi24866+1710425-210425-224719(Top 93%)10455(Top 92%)10455(Top 16863%)
21M21.00 mi1.00 mi24959-9310488-6310488-6325611(Top 96%)10912(Top 96%)10912(Top 17600%)
35K21.75 mi0.75 mi24919+4010466+2210466+2223707(Top 89%)9995(Top 87%)9995(Top 16121%)
23M23.00 mi1.25 mi24855+6410436+3010436+3023402(Top 88%)9809(Top 86%)9809(Top 15821%)
24M24.00 mi1.00 mi24849+610444-810444-824540(Top 92%)10450(Top 91%)10450(Top 16855%)
40K24.85 mi0.85 mi24837+1210442+210442+223984(Top 90%)10173(Top 89%)10173(Top 16408%)
25.2M25.20 mi0.35 mi24833+410441+110441+124047(Top 90%)10212(Top 89%)10212(Top 16471%)
Finish26.22 mi1.02 mi24866-3310468-2710468-2724985(Top 94%)10657(Top 93%)10657(Top 17189%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

24696

Females

10290

F70-74

10290

5K→10K

3.1 - 6.2 mi

Top 91%
×5story building
+79ft-138ft

Overall

24268

Females

10040

F70-74

10040

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

24696

Females

10290

F70-74

10290

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

25372

Females

10700

F70-74

10700

20K→Half

12.4 - 13.1 mi

Top 95%
×2story building
+19ft-37ft

Overall

25171

Females

10591

F70-74

10591

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

25026

Females

10527

F70-74

10527

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

24853

Females

10486

F70-74

10486

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

24719

Females

10455

F70-74

10455

20M→21M

20.0 - 21.0 mi

Top 96%
×8story building
+106ft-24ft

Overall

25611

Females

10912

F70-74

10912

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

23707

Females

9995

F70-74

9995

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

23402

Females

9809

F70-74

9809

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

24540

Females

10450

F70-74

10450

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

23984

Females

10173

F70-74

10173

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

24047

Females

10212

F70-74

10212

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

24985

Females

10657

F70-74

10657

Passing Analysis

Category:
Athletes Passed
633
Passed By
1437
Net Change
-804
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24062
5K → 10K149269-120#24062#24182
10K → 15K61275-214#24182#24396
15K → 20K20365-345#24396#24741
20K → Half1258-46#24741#24787
Half → 25K52109-57#24787#24844
25K → 30K73112-39#24844#24883
30K → 20M5336+17#24883#24866
20M → 21M12105-93#24866#24959
21M → 35K477+40#24959#24919
35K → 23M728+64#24919#24855
23M → 24M2923+6#24855#24849
24M → 40K3422+12#24849#24837
40K → 25.2M117+4#24837#24833
25.2M → Finish841-33#24833#24866
TOTALS6331437-804
📊

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