Boston Marathon logo
BOSTON MARATHON 2023

Chen-Hung Wu

Bib: 9093•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 25%
Gender (Male)
#0 / 15176
Top 38%
Masters (Masters Men)
#0 / 9891
Top 24%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:59
Rank: #4197
Start → 5K
6:45/mi
20:59 split
10K· 6.21 mi
42:08
Rank: #4808 (-611)
5K → 10K
6:48/mi
21:09 split
15K· 9.32 mi
1:03:34
Rank: #5181 (-373)
10K → 15K
6:54/mi
21:26 split
20K· 12.43 mi
1:25:33
Rank: #5587 (-406)
15K → 20K
7:05/mi
21:59 split
Half· 13.11 mi
1:30:16
Rank: #5622 (-35)
20K → Half
6:55/mi
4:43 split
25K· 15.53 mi
1:47:52
Rank: #5864 (-242)
Half → 25K
7:16/mi
17:36 split
30K· 18.64 mi
2:12:04
Rank: #6323 (-459)
25K → 30K
7:47/mi
24:12 split
20M
2:22:54
Rank: #6493 (-170)
30K → 20M
7:58/mi
10:50 split
21M
2:31:12
Rank: #6588 (-95)
20M → 21M
8:18/mi
8:18 split
35K· 21.75 mi
2:36:39
Rank: #6571 (+17)
21M → 35K
7:17/mi
5:27 split
23M
2:46:29
Rank: #6633 (-62)
35K → 23M
7:51/mi
9:50 split
24M
2:53:52
Rank: #6598 (+35)
23M → 24M
7:23/mi
7:23 split
40K· 24.85 mi
3:00:21
Rank: #6557 (+41)
24M → 40K
7:35/mi
6:29 split
25.2M
3:03:10
Rank: #6563 (-6)
40K → 25.2M
8:10/mi
2:49 split
Finish· 26.22 mi
3:10:39
Rank: #6557 (+6)
25.2M → Finish
7:21/mi
7:29 split

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
Time1:30:16
Pace6:53 /mi
2nd Half
Distance13.11 mi
Time1:40:23
Pace7:39 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3020:596:4520:59
6:45
-
10K
6.21 mi11:07:3942:086:4721:09
6:48
+0:03
15K
9.32 mi11:29:051:03:346:4921:26
6:54
+0:06
20K
12.43 mi11:51:041:25:336:5321:59
7:05
+0:11
Half
13.11 mi11:55:471:30:166:534:43
6:55
-0:10
25K
15.53 mi12:13:231:47:526:5717:36
7:16
+0:21
30K
18.64 mi12:37:352:12:047:0524:12
7:47
+0:31
20M
20.00 mi12:48:252:22:547:0910:50
7:58
+0:11
21M
21.00 mi12:56:432:31:127:128:18
8:18
+0:20
35K
21.75 mi13:02:102:36:397:125:27
7:17
-1:01
23M
23.00 mi13:12:002:46:297:149:50
7:51
+0:34
24M
24.00 mi13:19:232:53:527:157:23
7:23
-0:28
40K
24.85 mi13:25:523:00:217:156:29
7:35
+0:12
25.2M
25.20 mi13:28:413:03:107:162:49
8:10
+0:35
Finish
26.22 mi13:36:103:10:397:177:29
7:21
-0:49

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

6:45 /mi

Average Pace

7:17 /mi

Slowest Pace

8:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:16

47% of race

Time at Steady Pace

44:24

23% of race

Time at Slower Pace

55:59

29% of race

Average Pace: 7:16 /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 mi10:46:3020:596:4520:59
6:45
#4197
10K
6.21 mi11:07:3942:086:4721:09
6:48
#4808
15K
9.32 mi11:29:051:03:346:4921:26
6:54
#5181
20K
12.43 mi11:51:041:25:336:5321:59
7:05
#5587
Half
13.11 mi11:55:471:30:166:534:43
6:55
#5622
25K
15.53 mi12:13:231:47:526:5717:36
7:16
#5864
30K
18.64 mi12:37:352:12:047:0524:12
7:47
#6323
20M
20.00 mi12:48:252:22:547:0910:50
7:58
#6493
21M
21.00 mi12:56:432:31:127:128:18
8:18
#6588
35K
21.75 mi13:02:102:36:397:125:27
7:17
#6571
23M
23.00 mi13:12:002:46:297:149:50
7:51
#6633
24M
24.00 mi13:19:232:53:527:157:23
7:23
#6598
40K
24.85 mi13:25:523:00:217:156:29
7:35
#6557
25.2M
25.20 mi13:28:413:03:107:162:49
8:10
#6563
Finish
26.22 mi13:36:103:10:397:177:29
7:21
#6557
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4197393339335956(Top 22%)5431(Top 36%)5431(Top 242%)
10K6.21 mi3.10 mi4808-6114471-5384471-5385380(Top 20%)4965(Top 33%)4965(Top 222%)
15K9.32 mi3.11 mi5181-3734803-3324803-3325956(Top 22%)5431(Top 36%)5431(Top 242%)
20K12.43 mi3.11 mi5587-4065151-3485151-3486421(Top 24%)5785(Top 38%)5785(Top 258%)
Half13.11 mi0.68 mi5622-355182-315182-316077(Top 23%)5547(Top 37%)5547(Top 248%)
25K15.53 mi2.42 mi5864-2425374-1925374-1926995(Top 26%)6149(Top 41%)6149(Top 274%)
30K18.64 mi3.11 mi6323-4595705-3315705-3319252(Top 35%)7419(Top 49%)7419(Top 331%)
20M20.00 mi1.36 mi6493-1705823-1185823-11810029(Top 38%)7762(Top 51%)7762(Top 346%)
21M21.00 mi1.00 mi6588-955879-565879-569198(Top 35%)7170(Top 47%)7170(Top 320%)
35K21.75 mi0.75 mi6571+175858+215858+217001(Top 26%)5886(Top 39%)5886(Top 263%)
23M23.00 mi1.25 mi6633-625895-375895-378738(Top 33%)6819(Top 45%)6819(Top 304%)
24M24.00 mi1.00 mi6598+355851+445851+446914(Top 26%)5667(Top 37%)5667(Top 253%)
40K24.85 mi0.85 mi6557+415808+435808+437187(Top 27%)5735(Top 38%)5735(Top 256%)
25.2M25.20 mi0.35 mi6563-65804+45804+47428(Top 28%)5828(Top 38%)5828(Top 260%)
Finish26.22 mi1.02 mi6557+65785+195785+197378(Top 28%)5788(Top 38%)5788(Top 258%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21story building
+97ft-345ft

Overall

5956

Males

5431

M40-44

5431

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5380

Males

4965

M40-44

4965

10K→15K

6.2 - 9.3 mi

Top 22%
×3story building
+67ft-78ft

Overall

5956

Males

5431

M40-44

5431

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6421

Males

5785

M40-44

5785

20K→Half

12.4 - 13.1 mi

Top 23%
×2story building
+19ft-37ft

Overall

6077

Males

5547

M40-44

5547

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

6995

Males

6149

M40-44

6149

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9252

Males

7419

M40-44

7419

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10029

Males

7762

M40-44

7762

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9198

Males

7170

M40-44

7170

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

7001

Males

5886

M40-44

5886

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

8738

Males

6819

M40-44

6819

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

6914

Males

5667

M40-44

5667

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7187

Males

5735

M40-44

5735

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7428

Males

5828

M40-44

5828

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7378

Males

5788

M40-44

5788

Passing Analysis

Category:
Athletes Passed
543
Passed By
2903
Net Change
-2360
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4197
5K → 10K49660-611#4197#4808
10K → 15K27400-373#4808#5181
15K → 20K32438-406#5181#5587
20K → Half1045-35#5587#5622
Half → 25K25267-242#5622#5864
25K → 30K44503-459#5864#6323
30K → 20M18188-170#6323#6493
20M → 21M33128-95#6493#6588
21M → 35K5235+17#6588#6571
35K → 23M39101-62#6571#6633
23M → 24M6429+35#6633#6598
24M → 40K7130+41#6598#6557
40K → 25.2M2026-6#6557#6563
25.2M → Finish5953+6#6563#6557
TOTALS5432903-2360
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing