Boston Marathon logo
BOSTON MARATHON 2023

Laura Li Foa Wing

Bib: 10538•F

BC

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 28%
Gender (Female)
#0 / 11423
Top 9%
Division (F18-39)
#0 / 4884
Top 17%
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
7:20/mi
22:46
↑ 97↓ 3451.5%
10K· 6.21 mi
7:12/mi
45:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:11/mi
1:07:25
↑ 67↓ 78
20K· 12.43 mi
7:17/mi
1:30:03
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:35:01
↑ 19↓ 370.5%
25K· 15.53 mi
7:23/mi
1:52:54
↑ 66↓ 880.2%
30K· 18.64 mi
7:35/mi
2:16:29
↑ 181↓ 1480.2%
20M
7:33/mi
2:26:44
↑ 64↓ 500.2%
21M
7:55/mi
2:34:39
↑ 106↓ 241.6%
35K· 21.75 mi
7:06/mi
2:39:58
↑ 17↓ 861.7%
23M
7:34/mi
2:49:27
↑ 23↓ 630.6%
24M
7:25/mi
2:56:52
↓ 821.3%
40K· 24.85 mi
7:34/mi
3:03:20
↓ 200.3%
25.2M
8:16/mi
3:06:11
↑ 13↓ 160.2%
Finish· 26.22 mi
7:36/mi
3:13:56
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:01
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:38:55
Pace7:33 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5222:467:2022:46
7:20
-
10K
6.21 mi11:12:1345:077:1622:21
7:12
-0:08
15K
9.32 mi11:34:311:07:257:1422:18
7:11
-0:01
20K
12.43 mi11:57:091:30:037:1522:38
7:17
+0:06
Half
13.11 mi12:02:071:35:017:154:58
7:17
0:00
25K
15.53 mi12:20:001:52:547:1617:53
7:23
+0:06
30K
18.64 mi12:43:352:16:297:1923:35
7:35
+0:12
20M
20.00 mi12:53:502:26:447:2010:15
7:33
-0:02
21M
21.00 mi13:01:452:34:397:227:55
7:55
+0:22
35K
21.75 mi13:07:042:39:587:215:19
7:06
-0:49
23M
23.00 mi13:16:332:49:277:229:29
7:34
+0:28
24M
24.00 mi13:23:582:56:527:227:25
7:25
-0:09
40K
24.85 mi13:30:263:03:207:236:28
7:34
+0:09
25.2M
25.20 mi13:33:173:06:117:232:51
8:16
+0:42
Finish
26.22 mi13:41:023:13:567:247:45
7:36
-0:40

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

7:06 /mi

Average Pace

7:24 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:10

94% of race

Time at Steady Pace

10:46

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:24 /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 mi10:49:5222:467:2022:46
7:20
#8313
10K
6.21 mi11:12:1345:077:1622:21
7:12
#8195
15K
9.32 mi11:34:311:07:257:1422:18
7:11
#8005
20K
12.43 mi11:57:091:30:037:1522:38
7:17
#7872
Half
13.11 mi12:02:071:35:017:154:58
7:17
#7895
25K
15.53 mi12:20:001:52:547:1617:53
7:23
#7849
30K
18.64 mi12:43:352:16:297:1923:35
7:35
#7793
20M
20.00 mi12:53:502:26:447:2010:15
7:33
#7710
21M
21.00 mi13:01:452:34:397:227:55
7:55
#7629
35K
21.75 mi13:07:042:39:587:215:19
7:06
#7537
23M
23.00 mi13:16:332:49:277:229:29
7:34
#7446
24M
24.00 mi13:23:582:56:527:227:25
7:25
#7404
40K
24.85 mi13:30:263:03:207:236:28
7:34
#7375
25.2M
25.20 mi13:33:173:06:117:232:51
8:16
#7376
Finish
26.22 mi13:41:023:13:567:247:45
7:36
#7423
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8313113111317662(Top 29%)954(Top 8%)954(Top 20%)
10K6.21 mi3.10 mi8195+1181102+291102+298062(Top 30%)1066(Top 9%)1066(Top 22%)
15K9.32 mi3.11 mi8005+1901038+641038+647662(Top 29%)954(Top 8%)954(Top 20%)
20K12.43 mi3.11 mi7872+1331006+321006+327687(Top 29%)996(Top 9%)996(Top 20%)
Half13.11 mi0.68 mi7895-231017-111017-118487(Top 32%)1266(Top 11%)1266(Top 26%)
25K15.53 mi2.42 mi7849+461025-81025-87827(Top 29%)1126(Top 10%)1126(Top 23%)
30K18.64 mi3.11 mi7793+561044-191044-197887(Top 30%)1259(Top 11%)1259(Top 26%)
20M20.00 mi1.36 mi7710+831024+201024+207106(Top 27%)1056(Top 9%)1056(Top 22%)
21M21.00 mi1.00 mi7629+811018+61018+66861(Top 26%)1080(Top 9%)1080(Top 22%)
35K21.75 mi0.75 mi7537+92999+19999+196003(Top 23%)773(Top 7%)773(Top 16%)
23M23.00 mi1.25 mi7446+91987+12987+126927(Top 26%)1139(Top 10%)1139(Top 23%)
24M24.00 mi1.00 mi7404+42992-5992-57180(Top 27%)1350(Top 12%)1350(Top 28%)
40K24.85 mi0.85 mi7375+291009-171009-177123(Top 27%)1410(Top 12%)1410(Top 29%)
25.2M25.20 mi0.35 mi7376-11021-121021-128126(Top 31%)1853(Top 16%)1853(Top 38%)
Finish26.22 mi1.02 mi7423-471052-311052-319318(Top 35%)2376(Top 21%)2376(Top 49%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

7662

Females

954

F18-39

954

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

8062

Females

1066

F18-39

1066

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

7662

Females

954

F18-39

954

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

7687

Females

996

F18-39

996

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8487

Females

1266

F18-39

1266

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

7827

Females

1126

F18-39

1126

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

7887

Females

1259

F18-39

1259

30K→20M

18.6 - 20.0 mi

Top 27%
×5story building
+64ft-50ft

Overall

7106

Females

1056

F18-39

1056

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

6861

Females

1080

F18-39

1080

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6003

Females

773

F18-39

773

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6927

Females

1139

F18-39

1139

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7180

Females

1350

F18-39

1350

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7123

Females

1410

F18-39

1410

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8126

Females

1853

F18-39

1853

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9318

Females

2376

F18-39

2376

Passing Analysis

Category:
Athletes Passed
1686
Passed By
796
Net Change
+890
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8313
5K → 10K300182+118#8313#8195
10K → 15K24858+190#8195#8005
15K → 20K18350+133#8005#7872
20K → Half1235-23#7872#7895
Half → 25K11771+46#7895#7849
25K → 30K165109+56#7849#7793
30K → 20M11027+83#7793#7710
20M → 21M10726+81#7710#7629
21M → 35K964+92#7629#7537
35K → 23M11726+91#7537#7446
23M → 24M7634+42#7446#7404
24M → 40K6940+29#7404#7375
40K → 25.2M2829-1#7375#7376
25.2M → Finish58105-47#7376#7423
TOTALS1686796+890
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing