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BOSTON MARATHON 2023

Sylvie Grenier

Bib: 15520•F

MA

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

Start
0:00:00
Race begins
5K· 3.11 mi
23:51
Rank: #11261
Start → 5K
23:51 | 7:41/mi
10K· 6.21 mi
47:30
Rank: #11315 (-54)
5K → 10K
23:39 | 7:37/mi
15K· 9.32 mi
1:10:59
Rank: #11074 (+241)
10K → 15K
23:29 | 7:34/mi
20K· 12.43 mi
1:35:54
Rank: #11668 (-594)
15K → 20K
24:55 | 8:01/mi
Half· 13.11 mi
1:41:08
Rank: #11665 (+3)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
2:00:48
Rank: #11978 (-313)
Half → 25K
19:40 | 8:07/mi
30K· 18.64 mi
2:25:48
Rank: #11798 (+180)
25K → 30K
25:00 | 8:03/mi
20M
2:38:44
Rank: #12527 (-729)
30K → 20M
12:56 | 9:31/mi
21M
2:47:25
Rank: #12433 (+94)
20M → 21M
8:41 | 8:41/mi
35K· 21.75 mi
2:53:19
Rank: #12391 (+42)
21M → 35K
5:54 | 7:53/mi
23M
3:03:48
Rank: #12380 (+11)
35K → 23M
10:29 | 8:22/mi
24M
3:11:54
Rank: #12351 (+29)
23M → 24M
8:06 | 8:06/mi
40K· 24.85 mi
3:19:03
Rank: #12352 (-1)
24M → 40K
7:09 | 8:22/mi
25.2M
3:22:47
Rank: #12540 (-188)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
3:31:16
Rank: #12621 (-81)
25.2M → Finish
8:29 | 8:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:08
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:50:08
Pace8:24 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3023:517:4123:51
7:41
-
10K
6.21 mi11:17:0947:307:3923:39
7:37
-0:04
15K
9.32 mi11:40:381:10:597:3723:29
7:34
-0:03
20K
12.43 mi12:05:331:35:547:4324:55
8:01
+0:27
Half
13.11 mi12:10:471:41:087:435:14
7:40
-0:21
25K
15.53 mi12:30:272:00:487:4719:40
8:07
+0:27
30K
18.64 mi12:55:272:25:487:4925:00
8:03
-0:04
20M
20.00 mi13:08:232:38:447:5612:56
9:31
+1:28
21M
21.00 mi13:17:042:47:257:588:41
8:41
-0:50
35K
21.75 mi13:22:582:53:197:585:54
7:53
-0:48
23M
23.00 mi13:33:273:03:487:5910:29
8:22
+0:29
24M
24.00 mi13:41:333:11:548:008:06
8:06
-0:16
40K
24.85 mi13:48:423:19:038:017:09
8:22
+0:16
25.2M
25.20 mi13:52:263:22:478:033:44
10:50
+2:28
Finish
26.22 mi14:00:553:31:168:048:29
8:19
-2:31

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

7:34 /mi

Average Pace

8:04 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:13

36% of race

Time at Steady Pace

1:49:42

52% of race

Time at Slower Pace

25:21

12% of race

Average Pace: 8:03 /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 mi10:53:3023:517:4123:51
7:41
#11261
10K
6.21 mi11:17:0947:307:3923:39
7:37
#11315
15K
9.32 mi11:40:381:10:597:3723:29
7:34
#11074
20K
12.43 mi12:05:331:35:547:4324:55
8:01
#11668
Half
13.11 mi12:10:471:41:087:435:14
7:40
#11665
25K
15.53 mi12:30:272:00:487:4719:40
8:07
#11978
30K
18.64 mi12:55:272:25:487:4925:00
8:03
#11798
20M
20.00 mi13:08:232:38:447:5612:56
9:31
#12527
21M
21.00 mi13:17:042:47:257:588:41
8:41
#12433
35K
21.75 mi13:22:582:53:197:585:54
7:53
#12391
23M
23.00 mi13:33:273:03:487:5910:29
8:22
#12380
24M
24.00 mi13:41:333:11:548:008:06
8:06
#12351
40K
24.85 mi13:48:423:19:038:017:09
8:22
#12352
25.2M
25.20 mi13:52:263:22:478:033:44
10:50
#12540
Finish
26.22 mi14:00:553:31:168:048:29
8:19
#12621
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi112612469246910674(Top 40%)2175(Top 19%)2175(Top 45%)
10K6.21 mi3.10 mi11315-542503-342503-3411456(Top 43%)2584(Top 23%)2584(Top 53%)
15K9.32 mi3.11 mi11074+2412374+1292374+12910674(Top 40%)2175(Top 19%)2175(Top 45%)
20K12.43 mi3.11 mi11668-5942723-3492723-34913613(Top 51%)3883(Top 34%)3883(Top 80%)
Half13.11 mi0.68 mi11665+32722+12722+111737(Top 44%)2781(Top 24%)2781(Top 57%)
25K15.53 mi2.42 mi11978-3132927-2052927-20513583(Top 51%)3969(Top 35%)3969(Top 81%)
30K18.64 mi3.11 mi11798+1802865+622865+6211289(Top 42%)2789(Top 24%)2789(Top 57%)
20M20.00 mi1.36 mi12527-7293289-4243289-42418924(Top 71%)7250(Top 63%)7250(Top 148%)
21M21.00 mi1.00 mi12433+943254+353254+3511586(Top 44%)3191(Top 28%)3191(Top 65%)
35K21.75 mi0.75 mi12391+423250+43250+411352(Top 43%)3059(Top 27%)3059(Top 63%)
23M23.00 mi1.25 mi12380+113268-183268-1812415(Top 47%)3745(Top 33%)3745(Top 77%)
24M24.00 mi1.00 mi12351+293267+13267+111970(Top 45%)3571(Top 31%)3571(Top 73%)
40K24.85 mi0.85 mi12352-13288-213288-2112488(Top 47%)3929(Top 34%)3929(Top 80%)
25.2M25.20 mi0.35 mi12540-1883401-1133401-11320040(Top 75%)8071(Top 71%)8071(Top 165%)
Finish26.22 mi1.02 mi12621-813474-733474-7314266(Top 54%)4878(Top 43%)4878(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

10674

Females

2175

F18-39

2175

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11456

Females

2584

F18-39

2584

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

10674

Females

2175

F18-39

2175

15K→20K

9.3 - 12.4 mi

Top 51%
×5stories
+106ft-86ft

Overall

13613

Females

3883

F18-39

3883

20K→Half

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

11737

Females

2781

F18-39

2781

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13583

Females

3969

F18-39

3969

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11289

Females

2789

F18-39

2789

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

18924

Females

7250

F18-39

7250

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

11586

Females

3191

F18-39

3191

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11352

Females

3059

F18-39

3059

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

12415

Females

3745

F18-39

3745

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

11970

Females

3571

F18-39

3571

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12488

Females

3929

F18-39

3929

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

20040

Females

8071

F18-39

8071

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

14266

Females

4878

F18-39

4878

Passing Analysis

Category:
Athletes Passed
1505
Passed By
2865
Net Change
-1360
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11261
5K → 10K281335-54#11261#11315
10K → 15K32382+241#11315#11074
15K → 20K38632-594#11074#11668
20K → Half2724+3#11668#11665
Half → 25K53366-313#11665#11978
25K → 30K281101+180#11978#11798
30K → 20M12741-729#11798#12527
20M → 21M13743+94#12527#12433
21M → 35K7129+42#12433#12391
35K → 23M9382+11#12391#12380
23M → 24M7849+29#12380#12351
24M → 40K6061-1#12351#12352
40K → 25.2M4192-188#12352#12540
25.2M → Finish47128-81#12540#12621
TOTALS15052865-1360
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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