Boston Marathon logo
BOSTON MARATHON 2023

Chi Wing Gordon Lee

Bib: 2899•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 13%
Masters (Masters Men)
#0 / 9891
Top 4%
Division (M40-44)
#0 / 2241
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:12
Rank: #2278
Start → 5K
20:12 | 6:30/mi
10K· 6.21 mi
39:44
Rank: #1961 (+317)
5K → 10K
19:32 | 6:17/mi
15K· 9.32 mi
59:31
Rank: #1942 (+19)
10K → 15K
19:47 | 6:22/mi
20K· 12.43 mi
1:19:16
Rank: #1843 (+99)
15K → 20K
19:45 | 6:21/mi
Half· 13.11 mi
1:23:30
Rank: #1817 (+26)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:38:46
Rank: #1738 (+79)
Half → 25K
15:16 | 6:18/mi
30K· 18.64 mi
1:58:48
Rank: #1640 (+98)
25K → 30K
20:02 | 6:27/mi
20M
2:07:40
Rank: #1624 (+16)
30K → 20M
8:52 | 6:31/mi
21M
2:14:31
Rank: #1595 (+29)
20M → 21M
6:51 | 6:51/mi
35K· 21.75 mi
2:19:16
Rank: #1586 (+9)
21M → 35K
4:45 | 6:21/mi
23M
2:27:44
Rank: #1614 (-28)
35K → 23M
8:28 | 6:46/mi
24M
2:34:38
Rank: #1681 (-67)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:40:52
Rank: #1766 (-85)
24M → 40K
6:14 | 7:17/mi
25.2M
2:43:46
Rank: #1848 (-82)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
2:51:51
Rank: #2085 (-237)
25.2M → Finish
8:05 | 7:56/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
Time1:23:30
Pace6:22 /mi
2nd Half
Distance13.11 mi
Time1:28:21
Pace6:44 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3620:126:3020:12
6:30
-
10K
6.21 mi10:41:0839:446:2419:32
6:17
-0:13
15K
9.32 mi11:00:5559:316:2319:47
6:22
+0:05
20K
12.43 mi11:20:401:19:166:2319:45
6:21
-0:01
Half
13.11 mi11:24:541:23:306:224:14
6:12
-0:09
25K
15.53 mi11:40:101:38:466:2115:16
6:18
+0:06
30K
18.64 mi12:00:121:58:486:2220:02
6:27
+0:09
20M
20.00 mi12:09:042:07:406:238:52
6:31
+0:04
21M
21.00 mi12:15:552:14:316:246:51
6:51
+0:20
35K
21.75 mi12:20:402:19:166:244:45
6:21
-0:30
23M
23.00 mi12:29:082:27:446:258:28
6:46
+0:25
24M
24.00 mi12:36:022:34:386:276:54
6:54
+0:08
40K
24.85 mi12:42:162:40:526:286:14
7:17
+0:23
25.2M
25.20 mi12:45:102:43:466:302:54
8:25
+1:08
Finish
26.22 mi12:53:152:51:516:348:05
7:56
-0:29

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

6:12 /mi

Average Pace

6:34 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:20:53

82% of race

Time at Slower Pace

30:58

18% of race

Average Pace: 6:33 /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 mi10:21:3620:126:3020:12
6:30
#2278
10K
6.21 mi10:41:0839:446:2419:32
6:17
#1961
15K
9.32 mi11:00:5559:316:2319:47
6:22
#1942
20K
12.43 mi11:20:401:19:166:2319:45
6:21
#1843
Half
13.11 mi11:24:541:23:306:224:14
6:12
#1817
25K
15.53 mi11:40:101:38:466:2115:16
6:18
#1738
30K
18.64 mi12:00:121:58:486:2220:02
6:27
#1640
20M
20.00 mi12:09:042:07:406:238:52
6:31
#1624
21M
21.00 mi12:15:552:14:316:246:51
6:51
#1595
35K
21.75 mi12:20:402:19:166:244:45
6:21
#1586
23M
23.00 mi12:29:082:27:446:258:28
6:46
#1614
24M
24.00 mi12:36:022:34:386:276:54
6:54
#1681
40K
24.85 mi12:42:162:40:526:286:14
7:17
#1766
25.2M
25.20 mi12:45:102:43:466:302:54
8:25
#1848
Finish
26.22 mi12:53:152:51:516:348:05
7:56
#2085
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2278217221721949(Top 7%)1867(Top 12%)1867(Top 83%)
10K6.21 mi3.10 mi1961+3171878+2941878+2941725(Top 6%)1649(Top 11%)1649(Top 74%)
15K9.32 mi3.11 mi1942+191859+191859+191949(Top 7%)1867(Top 12%)1867(Top 83%)
20K12.43 mi3.11 mi1843+991764+951764+951629(Top 6%)1558(Top 10%)1558(Top 70%)
Half13.11 mi0.68 mi1817+261739+251739+251419(Top 5%)1359(Top 9%)1359(Top 61%)
25K15.53 mi2.42 mi1738+791662+771662+771336(Top 5%)1276(Top 8%)1276(Top 57%)
30K18.64 mi3.11 mi1640+981568+941568+941380(Top 5%)1322(Top 9%)1322(Top 59%)
20M20.00 mi1.36 mi1624+161553+151553+151558(Top 6%)1486(Top 10%)1486(Top 66%)
21M21.00 mi1.00 mi1595+291525+281525+281596(Top 6%)1520(Top 10%)1520(Top 68%)
35K21.75 mi0.75 mi1586+91516+91516+91760(Top 7%)1673(Top 11%)1673(Top 75%)
23M23.00 mi1.25 mi1614-281544-281544-282428(Top 9%)2280(Top 15%)2280(Top 102%)
24M24.00 mi1.00 mi1681-671608-641608-644128(Top 16%)3754(Top 25%)3754(Top 168%)
40K24.85 mi0.85 mi1766-851688-801688-805317(Top 20%)4547(Top 30%)4547(Top 203%)
25.2M25.20 mi0.35 mi1848-821767-791767-798819(Top 33%)6592(Top 43%)6592(Top 294%)
Finish26.22 mi1.02 mi2085-2371999-2321999-23211567(Top 43%)8060(Top 53%)8060(Top 360%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1949

Males

1867

M40-44

1867

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1725

Males

1649

M40-44

1649

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1949

Males

1867

M40-44

1867

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1629

Males

1558

M40-44

1558

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1419

Males

1359

M40-44

1359

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1336

Males

1276

M40-44

1276

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1380

Males

1322

M40-44

1322

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1558

Males

1486

M40-44

1486

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1596

Males

1520

M40-44

1520

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1760

Males

1673

M40-44

1673

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2428

Males

2280

M40-44

2280

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4128

Males

3754

M40-44

3754

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5317

Males

4547

M40-44

4547

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8819

Males

6592

M40-44

6592

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11567

Males

8060

M40-44

8060

Passing Analysis

Category:
Athletes Passed
865
Passed By
672
Net Change
+193
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2278
5K → 10K33013+317#2278#1961
10K → 15K7051+19#1961#1942
15K → 20K11819+99#1942#1843
20K → Half271+26#1843#1817
Half → 25K834+79#1817#1738
25K → 30K11214+98#1738#1640
30K → 20M2812+16#1640#1624
20M → 21M4112+29#1624#1595
21M → 35K167+9#1595#1586
35K → 23M1745-28#1586#1614
23M → 24M976-67#1614#1681
24M → 40K994-85#1681#1766
40K → 25.2M385-82#1766#1848
25.2M → Finish2239-237#1848#2085
TOTALS865672+193
📊

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