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BOSTON MARATHON 2023

Stephanie Li

Bib: 9705•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 25%
Gender (Female)
#0 / 11423
Top 7%
Division (F18-39)
#0 / 4884
Top 14%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
21:48
Rank: #6357
Start → 5K
21:48 | 7:01/mi
10K· 6.21 mi
43:22
Rank: #6385 (-28)
5K → 10K
21:34 | 6:56/mi
15K· 9.32 mi
1:04:58
Rank: #6325 (+60)
10K → 15K
21:36 | 6:57/mi
20K· 12.43 mi
1:26:58
Rank: #6342 (-17)
15K → 20K
22:00 | 7:05/mi
Half· 13.11 mi
1:31:46
Rank: #6371 (-29)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:49:05
Rank: #6359 (+12)
Half → 25K
17:19 | 7:09/mi
30K· 18.64 mi
2:12:15
Rank: #6373 (-14)
25K → 30K
23:10 | 7:27/mi
20M
2:22:28
Rank: #6368 (+5)
30K → 20M
10:13 | 7:31/mi
21M
2:30:54
Rank: #6500 (-132)
20M → 21M
8:26 | 8:26/mi
35K· 21.75 mi
2:36:48
Rank: #6616 (-116)
21M → 35K
5:54 | 7:53/mi
23M
2:46:22
Rank: #6606 (+10)
35K → 23M
9:34 | 7:38/mi
24M
2:54:02
Rank: #6639 (-33)
23M → 24M
7:40 | 7:40/mi
40K· 24.85 mi
3:00:34
Rank: #6623 (+16)
24M → 40K
6:32 | 7:38/mi
25.2M
3:03:30
Rank: #6658 (-35)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:11:31
Rank: #6776 (-118)
25.2M → Finish
8:01 | 7:52/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:46
Pace7:00 /mi
2nd Half
Distance13.11 mi
Time1:39:45
Pace7:37 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2221:487:0121:48
7:01
-
10K
6.21 mi11:08:5643:226:5921:34
6:56
-0:05
15K
9.32 mi11:30:321:04:586:5821:36
6:57
+0:01
20K
12.43 mi11:52:321:26:587:0022:00
7:05
+0:08
Half
13.11 mi11:57:201:31:467:004:48
7:02
-0:03
25K
15.53 mi12:14:391:49:057:0117:19
7:09
+0:07
30K
18.64 mi12:37:492:12:157:0623:10
7:27
+0:18
20M
20.00 mi12:48:022:22:287:0710:13
7:31
+0:04
21M
21.00 mi12:56:282:30:547:118:26
8:26
+0:55
35K
21.75 mi13:02:222:36:487:135:54
7:53
-0:33
23M
23.00 mi13:11:562:46:227:149:34
7:38
-0:15
24M
24.00 mi13:19:362:54:027:157:40
7:40
+0:02
40K
24.85 mi13:26:083:00:347:166:32
7:38
-0:02
25.2M
25.20 mi13:29:043:03:307:172:56
8:30
+0:52
Finish
26.22 mi13:37:053:11:317:198:01
7:52
-0:38

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

6:56 /mi

Average Pace

7:19 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:49:05

57% of race

Time at Steady Pace

57:09

30% of race

Time at Slower Pace

25:17

13% of race

Average Pace: 7:18 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:47:2221:487:0121:48
7:01
#6357
10K
6.21 mi11:08:5643:226:5921:34
6:56
#6385
15K
9.32 mi11:30:321:04:586:5821:36
6:57
#6325
20K
12.43 mi11:52:321:26:587:0022:00
7:05
#6342
Half
13.11 mi11:57:201:31:467:004:48
7:02
#6371
25K
15.53 mi12:14:391:49:057:0117:19
7:09
#6359
30K
18.64 mi12:37:492:12:157:0623:10
7:27
#6373
20M
20.00 mi12:48:022:22:287:0710:13
7:31
#6368
21M
21.00 mi12:56:282:30:547:118:26
8:26
#6500
35K
21.75 mi13:02:222:36:487:135:54
7:53
#6616
23M
23.00 mi13:11:562:46:227:149:34
7:38
#6606
24M
24.00 mi13:19:362:54:027:157:40
7:40
#6639
40K
24.85 mi13:26:083:00:347:166:32
7:38
#6623
25.2M
25.20 mi13:29:043:03:307:172:56
8:30
#6658
Finish
26.22 mi13:37:053:11:317:198:01
7:52
#6776
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi63575695696281(Top 24%)596(Top 5%)596(Top 12%)
10K6.21 mi3.10 mi6385-28599-30599-306448(Top 24%)627(Top 5%)627(Top 13%)
15K9.32 mi3.11 mi6325+60589+10589+106281(Top 24%)596(Top 5%)596(Top 12%)
20K12.43 mi3.11 mi6342-17595-6595-66467(Top 24%)646(Top 6%)646(Top 13%)
Half13.11 mi0.68 mi6371-29605-10605-106820(Top 26%)717(Top 6%)717(Top 15%)
25K15.53 mi2.42 mi6359+126056056364(Top 24%)665(Top 6%)665(Top 14%)
30K18.64 mi3.11 mi6373-14619-14619-146944(Top 26%)910(Top 8%)910(Top 19%)
20M20.00 mi1.36 mi6368+5633-14633-146929(Top 26%)997(Top 9%)997(Top 20%)
21M21.00 mi1.00 mi6500-132683-50683-5010075(Top 38%)2408(Top 21%)2408(Top 49%)
35K21.75 mi0.75 mi6616-116721-38721-3811300(Top 42%)3007(Top 26%)3007(Top 62%)
23M23.00 mi1.25 mi6606+10724-3724-37379(Top 28%)1321(Top 12%)1321(Top 27%)
24M24.00 mi1.00 mi6639-33749-25749-258864(Top 33%)2026(Top 18%)2026(Top 41%)
40K24.85 mi0.85 mi6623+16767-18767-187581(Top 28%)1588(Top 14%)1588(Top 33%)
25.2M25.20 mi0.35 mi6658-35783-16783-169585(Top 36%)2468(Top 22%)2468(Top 51%)
Finish26.22 mi1.02 mi6776-118831-48831-4811158(Top 42%)3264(Top 29%)3264(Top 67%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6281

Females

596

F18-39

596

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6448

Females

627

F18-39

627

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6281

Females

596

F18-39

596

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6467

Females

646

F18-39

646

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

6820

Females

717

F18-39

717

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6364

Females

665

F18-39

665

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

6944

Females

910

F18-39

910

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

6929

Females

997

F18-39

997

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10075

Females

2408

F18-39

2408

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11300

Females

3007

F18-39

3007

35K→23M

21.8 - 23.0 mi

Top 28%
×5stories
+23ft-63ft

Overall

7379

Females

1321

F18-39

1321

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

8864

Females

2026

F18-39

2026

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7581

Females

1588

F18-39

1588

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9585

Females

2468

F18-39

2468

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

11158

Females

3264

F18-39

3264

Passing Analysis

Category:
Athletes Passed
933
Passed By
1352
Net Change
-419
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6357
5K → 10K175203-28#6357#6385
10K → 15K14383+60#6385#6325
15K → 20K106123-17#6325#6342
20K → Half635-29#6342#6371
Half → 25K7967+12#6371#6359
25K → 30K115129-14#6359#6373
30K → 20M6257+5#6373#6368
20M → 21M28160-132#6368#6500
21M → 35K17133-116#6500#6616
35K → 23M6555+10#6616#6606
23M → 24M3770-33#6606#6639
24M → 40K6145+16#6639#6623
40K → 25.2M1550-35#6623#6658
25.2M → Finish24142-118#6658#6776
TOTALS9331352-419
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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