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BOSTON MARATHON 2023

Rebecca Glasgow

Bib: 12631•F

NV

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Division (F18-39)
#0 / 4884
Top 48%
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
7:30/mi
23:17
↑ 97↓ 3451.5%
10K· 6.21 mi
7:26/mi
46:23
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:09:55
↑ 67↓ 78
20K· 12.43 mi
7:47/mi
1:34:07
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:39:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:08/mi
1:59:09
↑ 66↓ 880.2%
30K· 18.64 mi
8:26/mi
2:25:21
↑ 181↓ 1480.2%
20M
8:33/mi
2:36:58
↑ 64↓ 500.2%
21M
9:18/mi
2:46:16
↑ 106↓ 241.6%
35K· 21.75 mi
8:16/mi
2:52:27
↑ 17↓ 861.7%
23M
8:45/mi
3:03:24
↑ 23↓ 630.6%
24M
8:16/mi
3:11:40
↓ 821.3%
40K· 24.85 mi
8:47/mi
3:19:11
↓ 200.3%
25.2M
9:37/mi
3:22:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:06/mi
3:30:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:27
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:51:18
Pace8:29 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4323:177:3023:17
7:30
-
10K
6.21 mi11:13:4946:237:2823:06
7:26
-0:04
15K
9.32 mi11:37:211:09:557:3023:32
7:34
+0:08
20K
12.43 mi12:01:331:34:077:3424:12
7:47
+0:13
Half
13.11 mi12:06:531:39:277:355:20
7:49
+0:02
25K
15.53 mi12:26:351:59:097:4019:42
8:08
+0:19
30K
18.64 mi12:52:472:25:217:4826:12
8:26
+0:18
20M
20.00 mi13:04:242:36:587:5111:37
8:33
+0:07
21M
21.00 mi13:13:422:46:167:559:18
9:18
+0:45
35K
21.75 mi13:19:532:52:277:566:11
8:16
-1:02
23M
23.00 mi13:30:503:03:247:5810:57
8:45
+0:29
24M
24.00 mi13:39:063:11:407:598:16
8:16
-0:29
40K
24.85 mi13:46:373:19:118:017:31
8:47
+0:31
25.2M
25.20 mi13:49:563:22:308:023:19
9:37
+0:50
Finish
26.22 mi13:58:113:30:458:038:15
8:06
-1:31

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

7:26 /mi

Average Pace

8:03 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:27

47% of race

Time at Steady Pace

1:20:13

38% of race

Time at Slower Pace

31:05

15% of race

Average Pace: 8:02 /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 mi10:50:4323:177:3023:17
7:30
#9602
10K
6.21 mi11:13:4946:237:2823:06
7:26
#9715
15K
9.32 mi11:37:211:09:557:3023:32
7:34
#10074
20K
12.43 mi12:01:331:34:077:3424:12
7:47
#10464
Half
13.11 mi12:06:531:39:277:355:20
7:49
#10603
25K
15.53 mi12:26:351:59:097:4019:42
8:08
#11063
30K
18.64 mi12:52:472:25:217:4826:12
8:26
#11592
20M
20.00 mi13:04:242:36:587:5111:37
8:33
#11781
21M
21.00 mi13:13:422:46:167:559:18
9:18
#12013
35K
21.75 mi13:19:532:52:277:566:11
8:16
#12071
23M
23.00 mi13:30:503:03:247:5810:57
8:45
#12249
24M
24.00 mi13:39:063:11:407:598:16
8:16
#12280
40K
24.85 mi13:46:373:19:118:017:31
8:47
#12404
25.2M
25.20 mi13:49:563:22:308:023:19
9:37
#12464
Finish
26.22 mi13:58:113:30:458:038:15
8:06
#12459
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi96021668166810813(Top 41%)2243(Top 20%)2243(Top 46%)
10K6.21 mi3.10 mi9715-1131714-461714-469945(Top 37%)1795(Top 16%)1795(Top 37%)
15K9.32 mi3.11 mi10074-3591857-1431857-14310813(Top 41%)2243(Top 20%)2243(Top 46%)
20K12.43 mi3.11 mi10464-3902052-1952052-19511666(Top 44%)2777(Top 24%)2777(Top 57%)
Half13.11 mi0.68 mi10603-1392125-732125-7312917(Top 49%)3446(Top 30%)3446(Top 71%)
25K15.53 mi2.42 mi11063-4602389-2642389-26413681(Top 51%)4016(Top 35%)4016(Top 82%)
30K18.64 mi3.11 mi11592-5292744-3552744-35513886(Top 52%)4260(Top 37%)4260(Top 87%)
20M20.00 mi1.36 mi11781-1892871-1272871-12713925(Top 52%)4359(Top 38%)4359(Top 89%)
21M21.00 mi1.00 mi12013-2323017-1463017-14614982(Top 56%)5036(Top 44%)5036(Top 103%)
35K21.75 mi0.75 mi12071-583071-543071-5413912(Top 52%)4503(Top 39%)4503(Top 92%)
23M23.00 mi1.25 mi12249-1783196-1253196-12514673(Top 55%)4986(Top 44%)4986(Top 102%)
24M24.00 mi1.00 mi12280-313234-383234-3813072(Top 49%)4161(Top 36%)4161(Top 85%)
40K24.85 mi0.85 mi12404-1243314-803314-8015043(Top 57%)5312(Top 47%)5312(Top 109%)
25.2M25.20 mi0.35 mi12464-603366-523366-5215746(Top 59%)5702(Top 50%)5702(Top 117%)
Finish26.22 mi1.02 mi12459+53382-163382-1612765(Top 48%)4089(Top 36%)4089(Top 84%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

10813

Females

2243

F18-39

2243

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9945

Females

1795

F18-39

1795

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

10813

Females

2243

F18-39

2243

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

11666

Females

2777

F18-39

2777

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

12917

Females

3446

F18-39

3446

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13681

Females

4016

F18-39

4016

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

13886

Females

4260

F18-39

4260

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13925

Females

4359

F18-39

4359

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14982

Females

5036

F18-39

5036

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

13912

Females

4503

F18-39

4503

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

14673

Females

4986

F18-39

4986

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13072

Females

4161

F18-39

4161

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15043

Females

5312

F18-39

5312

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15746

Females

5702

F18-39

5702

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

12765

Females

4089

F18-39

4089

Passing Analysis

Category:
Athletes Passed
817
Passed By
3672
Net Change
-2857
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9602
5K → 10K252365-113#9602#9715
10K → 15K72429-359#9715#10074
15K → 20K60450-390#10074#10464
20K → Half7146-139#10464#10603
Half → 25K44504-460#10603#11063
25K → 30K57586-529#11063#11592
30K → 20M57246-189#11592#11781
20M → 21M31263-232#11781#12013
21M → 35K3189-58#12013#12071
35K → 23M41219-178#12071#12249
23M → 24M4980-31#12249#12280
24M → 40K26150-124#12280#12404
40K → 25.2M2282-60#12404#12464
25.2M → Finish6863+5#12464#12459
TOTALS8173672-2857
📊

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