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BOSTON MARATHON 2023

Gillian Maclennan

Bib: 30614•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
29:34
↑ 97↓ 3451.5%
10K· 6.21 mi
9:27/mi
58:55
↑ 79↓ 1380.4%
15K· 9.32 mi
9:33/mi
1:28:34
↑ 67↓ 78
20K· 12.43 mi
9:41/mi
1:58:38
↑ 106↓ 860.1%
Half· 13.11 mi
9:40/mi
2:05:14
↑ 19↓ 370.5%
25K· 15.53 mi
10:07/mi
2:29:46
↑ 66↓ 880.2%
30K· 18.64 mi
10:40/mi
3:02:53
↑ 181↓ 1480.2%
20M
11:27/mi
3:18:26
↑ 64↓ 500.2%
21M
13:12/mi
3:31:38
↑ 106↓ 241.6%
35K· 21.75 mi
10:42/mi
3:39:38
↑ 17↓ 861.7%
23M
11:24/mi
3:53:55
↑ 23↓ 630.6%
24M
11:13/mi
4:05:08
↓ 821.3%
40K· 24.85 mi
11:50/mi
4:15:15
↓ 200.3%
25.2M
13:17/mi
4:19:50
↑ 13↓ 160.2%
Finish· 26.22 mi
11:39/mi
4:31:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:14
Pace9:33 /mi
2nd Half
Distance13.11 mi
Time2:26:28
Pace11:10 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:2929:349:3129:34
9:31
-
10K
6.21 mi12:21:5058:559:2929:21
9:27
-0:04
15K
9.32 mi12:51:291:28:349:3029:39
9:33
+0:06
20K
12.43 mi13:21:331:58:389:3330:04
9:41
+0:08
Half
13.11 mi13:28:092:05:149:336:36
9:40
-0:01
25K
15.53 mi13:52:412:29:469:3824:32
10:07
+0:27
30K
18.64 mi14:25:483:02:539:4933:07
10:40
+0:33
20M
20.00 mi14:41:213:18:269:5515:33
11:27
+0:47
21M
21.00 mi14:54:333:31:3810:0513:12
13:12
+1:45
35K
21.75 mi15:02:333:39:3810:068:00
10:42
-2:30
23M
23.00 mi15:16:503:53:5510:1014:17
11:24
+0:42
24M
24.00 mi15:28:034:05:0810:1311:13
11:13
-0:11
40K
24.85 mi15:38:104:15:1510:1610:07
11:50
+0:37
25.2M
25.20 mi15:42:454:19:5010:194:35
13:17
+1:27
Finish
26.22 mi15:54:374:31:4210:2211:52
11:39
-1:38

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

9:27 /mi

Average Pace

10:22 /mi

Slowest Pace

13:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:14

46% of race

Time at Steady Pace

1:16:52

28% of race

Time at Slower Pace

1:09:36

26% of race

Average Pace: 10:22 /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 mi11:52:2929:349:3129:34
9:31
#22146
10K
6.21 mi12:21:5058:559:2929:21
9:27
#22290
15K
9.32 mi12:51:291:28:349:3029:39
9:33
#22323
20K
12.43 mi13:21:331:58:389:3330:04
9:41
#22250
Half
13.11 mi13:28:092:05:149:336:36
9:40
#22259
25K
15.53 mi13:52:412:29:469:3824:32
10:07
#22323
30K
18.64 mi14:25:483:02:539:4933:07
10:40
#22362
20M
20.00 mi14:41:213:18:269:5515:33
11:27
#22453
21M
21.00 mi14:54:333:31:3810:0513:12
13:12
#22611
35K
21.75 mi15:02:333:39:3810:068:00
10:42
#22608
23M
23.00 mi15:16:503:53:5510:1014:17
11:24
#22637
24M
24.00 mi15:28:034:05:0810:1311:13
11:13
#22665
40K
24.85 mi15:38:104:15:1510:1610:07
11:50
#22726
25.2M
25.20 mi15:42:454:19:5010:194:35
13:17
#22757
Finish
26.22 mi15:54:374:31:4210:2211:52
11:39
#22863
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi221468950895022383(Top 84%)9001(Top 79%)9001(Top 746%)
10K6.21 mi3.10 mi22290-1448996-468996-4622362(Top 84%)9015(Top 79%)9015(Top 747%)
15K9.32 mi3.11 mi22323-339000-49000-422383(Top 84%)9001(Top 79%)9001(Top 746%)
20K12.43 mi3.11 mi22250+738961+398961+3922093(Top 83%)8859(Top 78%)8859(Top 734%)
Half13.11 mi0.68 mi22259-98964-38964-322613(Top 85%)9144(Top 80%)9144(Top 758%)
25K15.53 mi2.42 mi22323-649015-519015-5122473(Top 84%)9101(Top 80%)9101(Top 754%)
30K18.64 mi3.11 mi22362-399044-299044-2922525(Top 85%)9200(Top 81%)9200(Top 762%)
20M20.00 mi1.36 mi22453-919107-639107-6323437(Top 88%)9753(Top 85%)9753(Top 808%)
21M21.00 mi1.00 mi22611-1589205-989205-9824301(Top 91%)10246(Top 90%)10246(Top 849%)
35K21.75 mi0.75 mi22608+39213-89213-822748(Top 85%)9453(Top 83%)9453(Top 783%)
23M23.00 mi1.25 mi22637-299229-169229-1623090(Top 87%)9635(Top 84%)9635(Top 798%)
24M24.00 mi1.00 mi22665-289252-239252-2323433(Top 88%)9861(Top 86%)9861(Top 817%)
40K24.85 mi0.85 mi22726-619294-429294-4223677(Top 89%)10031(Top 88%)10031(Top 831%)
25.2M25.20 mi0.35 mi22757-319314-209314-2024312(Top 91%)10333(Top 90%)10333(Top 856%)
Finish26.22 mi1.02 mi22863-1069382-689382-6824872(Top 93%)10592(Top 93%)10592(Top 878%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

22383

Females

9001

F50-54

9001

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22362

Females

9015

F50-54

9015

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

22383

Females

9001

F50-54

9001

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

22093

Females

8859

F50-54

8859

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

22613

Females

9144

F50-54

9144

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

22473

Females

9101

F50-54

9101

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22525

Females

9200

F50-54

9200

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23437

Females

9753

F50-54

9753

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

24301

Females

10246

F50-54

10246

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22748

Females

9453

F50-54

9453

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

23090

Females

9635

F50-54

9635

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

23433

Females

9861

F50-54

9861

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23677

Females

10031

F50-54

10031

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

24312

Females

10333

F50-54

10333

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

24872

Females

10592

F50-54

10592

Passing Analysis

Category:
Athletes Passed
895
Passed By
1612
Net Change
-717
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22146
5K → 10K177321-144#22146#22290
10K → 15K146179-33#22290#22323
15K → 20K17097+73#22323#22250
20K → Half1726-9#22250#22259
Half → 25K81145-64#22259#22323
25K → 30K108147-39#22323#22362
30K → 20M27118-91#22362#22453
20M → 21M17175-158#22453#22611
21M → 35K4037+3#22611#22608
35K → 23M5382-29#22608#22637
23M → 24M2553-28#22637#22665
24M → 40K1475-61#22665#22726
40K → 25.2M1243-31#22726#22757
25.2M → Finish8114-106#22757#22863
TOTALS8951612-717
📊

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