Boston Marathon logo
BOSTON MARATHON 2023

Pei Xun Woo

Bib: 17592•F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 35%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:02
Rank: #11796
Start → 5K
24:02 | 7:44/mi
10K· 6.21 mi
48:24
Rank: #12605 (-809)
5K → 10K
24:22 | 7:51/mi
15K· 9.32 mi
1:12:55
Rank: #12916 (-311)
10K → 15K
24:31 | 7:53/mi
20K· 12.43 mi
1:37:44
Rank: #12991 (-75)
15K → 20K
24:49 | 7:59/mi
Half· 13.11 mi
1:43:09
Rank: #13027 (-36)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:03:19
Rank: #13373 (-346)
Half → 25K
20:10 | 8:19/mi
30K· 18.64 mi
2:30:01
Rank: #13662 (-289)
25K → 30K
26:42 | 8:36/mi
20M
2:41:43
Rank: #13712 (-50)
30K → 20M
11:42 | 8:37/mi
21M
2:50:45
Rank: #13699 (+13)
20M → 21M
9:02 | 9:02/mi
35K· 21.75 mi
2:57:06
Rank: #13749 (-50)
21M → 35K
6:21 | 8:29/mi
23M
3:08:10
Rank: #13819 (-70)
35K → 23M
11:04 | 8:50/mi
24M
3:16:08
Rank: #13674 (+145)
23M → 24M
7:58 | 7:58/mi
40K· 24.85 mi
3:23:08
Rank: #13561 (+113)
24M → 40K
7:00 | 8:11/mi
25.2M
3:26:20
Rank: #13563 (-2)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:34:55
Rank: #13611 (-48)
25.2M → Finish
8:35 | 8:25/mi

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
Time1:43:09
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:51:46
Pace8:32 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2624:027:4424:02
7:44
-
10K
6.21 mi11:38:4848:247:4724:22
7:51
+0:07
15K
9.32 mi12:03:191:12:557:4924:31
7:53
+0:02
20K
12.43 mi12:28:081:37:447:5224:49
7:59
+0:06
Half
13.11 mi12:33:331:43:097:525:25
7:56
-0:03
25K
15.53 mi12:53:432:03:197:5620:10
8:19
+0:23
30K
18.64 mi13:20:252:30:018:0326:42
8:36
+0:17
20M
20.00 mi13:32:072:41:438:0511:42
8:37
+0:01
21M
21.00 mi13:41:092:50:458:089:02
9:02
+0:25
35K
21.75 mi13:47:302:57:068:096:21
8:29
-0:33
23M
23.00 mi13:58:343:08:108:1111:04
8:50
+0:21
24M
24.00 mi14:06:323:16:088:107:58
7:58
-0:52
40K
24.85 mi14:13:323:23:088:107:00
8:11
+0:13
25.2M
25.20 mi14:16:443:26:208:113:12
9:17
+1:06
Finish
26.22 mi14:25:193:34:558:128:35
8:25
-0:52

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

7:44 /mi

Average Pace

8:12 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:07

52% of race

Time at Steady Pace

42:06

20% of race

Time at Slower Pace

1:01:42

29% of race

Average Pace: 8:12 /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 mi11:14:2624:027:4424:02
7:44
#11796
10K
6.21 mi11:38:4848:247:4724:22
7:51
#12605
15K
9.32 mi12:03:191:12:557:4924:31
7:53
#12916
20K
12.43 mi12:28:081:37:447:5224:49
7:59
#12991
Half
13.11 mi12:33:331:43:097:525:25
7:56
#13027
25K
15.53 mi12:53:432:03:197:5620:10
8:19
#13373
30K
18.64 mi13:20:252:30:018:0326:42
8:36
#13662
20M
20.00 mi13:32:072:41:438:0511:42
8:37
#13712
21M
21.00 mi13:41:092:50:458:089:02
9:02
#13699
35K
21.75 mi13:47:302:57:068:096:21
8:29
#13749
23M
23.00 mi13:58:343:08:108:1111:04
8:50
#13819
24M
24.00 mi14:06:323:16:088:107:58
7:58
#13674
40K
24.85 mi14:13:323:23:088:107:00
8:11
#13561
25.2M
25.20 mi14:16:443:26:208:113:12
9:17
#13563
Finish
26.22 mi14:25:193:34:558:128:35
8:25
#13611
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi117962752275213468(Top 51%)3763(Top 33%)3763(Top 77%)
10K6.21 mi3.10 mi12605-8093216-4643216-46413509(Top 51%)3733(Top 33%)3733(Top 76%)
15K9.32 mi3.11 mi12916-3113410-1943410-19413468(Top 51%)3763(Top 33%)3763(Top 77%)
20K12.43 mi3.11 mi12991-753481-713481-7113326(Top 50%)3724(Top 33%)3724(Top 76%)
Half13.11 mi0.68 mi13027-363501-203501-2013938(Top 52%)4047(Top 35%)4047(Top 83%)
25K15.53 mi2.42 mi13373-3463729-2283729-22815064(Top 57%)4880(Top 43%)4880(Top 100%)
30K18.64 mi3.11 mi13662-2893934-2053934-20514887(Top 56%)4861(Top 43%)4861(Top 100%)
20M20.00 mi1.36 mi13712-503984-503984-5014333(Top 54%)4612(Top 40%)4612(Top 94%)
21M21.00 mi1.00 mi13699+133989-53989-513617(Top 51%)4273(Top 37%)4273(Top 87%)
35K21.75 mi0.75 mi13749-504039-504039-5015241(Top 57%)5245(Top 46%)5245(Top 107%)
23M23.00 mi1.25 mi13819-704112-734112-7315202(Top 57%)5283(Top 46%)5283(Top 108%)
24M24.00 mi1.00 mi13674+1454047+654047+6511049(Top 42%)3122(Top 27%)3122(Top 64%)
40K24.85 mi0.85 mi13561+1133996+513996+5111317(Top 43%)3326(Top 29%)3326(Top 68%)
25.2M25.20 mi0.35 mi13563-24008-124008-1214118(Top 53%)4802(Top 42%)4802(Top 98%)
Finish26.22 mi1.02 mi13611-484055-474055-4714899(Top 56%)5200(Top 46%)5200(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

13468

Females

3763

F18-39

3763

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13509

Females

3733

F18-39

3733

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

13468

Females

3763

F18-39

3763

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

13326

Females

3724

F18-39

3724

20K→Half

12.4 - 13.1 mi

Top 52%
×2stories
+19ft-37ft

Overall

13938

Females

4047

F18-39

4047

Half→25K

13.1 - 15.5 mi

Top 57%
×4stories
+66ft-88ft

Overall

15064

Females

4880

F18-39

4880

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

14887

Females

4861

F18-39

4861

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

14333

Females

4612

F18-39

4612

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

13617

Females

4273

F18-39

4273

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

15241

Females

5245

F18-39

5245

35K→23M

21.8 - 23.0 mi

Top 57%
×5stories
+23ft-63ft

Overall

15202

Females

5283

F18-39

5283

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

11049

Females

3122

F18-39

3122

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11317

Females

3326

F18-39

3326

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14118

Females

4802

F18-39

4802

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

14899

Females

5200

F18-39

5200

Passing Analysis

Category:
Athletes Passed
1183
Passed By
2998
Net Change
-1815
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11796
5K → 10K75884-809#11796#12605
10K → 15K86397-311#12605#12916
15K → 20K171246-75#12916#12991
20K → Half1854-36#12991#13027
Half → 25K68414-346#13027#13373
25K → 30K101390-289#13373#13662
30K → 20M81131-50#13662#13712
20M → 21M10390+13#13712#13699
21M → 35K4090-50#13699#13749
35K → 23M68138-70#13749#13819
23M → 24M1527+145#13819#13674
24M → 40K13219+113#13674#13561
40K → 25.2M3133-2#13561#13563
25.2M → Finish57105-48#13563#13611
TOTALS11832998-1815
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing