Boston Marathon logo
BOSTON MARATHON 2023

Michael Yu

Bib: 4200•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 19%
Gender (Male)
#0 / 15176
Top 31%
Masters (Masters Men)
#0 / 9891
Top 17%
Division (M50-54)
#0 / 2052
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:43
Rank: #3389
Start → 5K
20:43 | 6:40/mi
10K· 6.21 mi
41:04
Rank: #3234 (+155)
5K → 10K
20:21 | 6:33/mi
15K· 9.32 mi
1:01:36
Rank: #3261 (-27)
10K → 15K
20:32 | 6:37/mi
20K· 12.43 mi
1:22:35
Rank: #3417 (-156)
15K → 20K
20:59 | 6:45/mi
Half· 13.11 mi
1:27:10
Rank: #3457 (-40)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:43:39
Rank: #3530 (-73)
Half → 25K
16:29 | 6:48/mi
30K· 18.64 mi
2:05:36
Rank: #3760 (-230)
25K → 30K
21:57 | 7:04/mi
20M
2:15:29
Rank: #3911 (-151)
30K → 20M
9:53 | 7:16/mi
21M
2:23:26
Rank: #4146 (-235)
20M → 21M
7:57 | 7:57/mi
35K· 21.75 mi
2:28:51
Rank: #4255 (-109)
21M → 35K
5:25 | 7:14/mi
23M
2:38:39
Rank: #4576 (-321)
35K → 23M
9:48 | 7:50/mi
24M
2:46:16
Rank: #4733 (-157)
23M → 24M
7:37 | 7:37/mi
40K· 24.85 mi
2:53:05
Rank: #4868 (-135)
24M → 40K
6:49 | 7:58/mi
25.2M
2:56:03
Rank: #4921 (-53)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:04:15
Rank: #5091 (-170)
25.2M → Finish
8:12 | 8:03/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
Time1:27:10
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:37:05
Pace7:24 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5920:436:4020:43
6:40
-
10K
6.21 mi10:43:2041:046:3720:21
6:33
-0:07
15K
9.32 mi11:03:521:01:366:3720:32
6:37
+0:04
20K
12.43 mi11:24:511:22:356:3920:59
6:45
+0:08
Half
13.11 mi11:29:261:27:106:394:35
6:43
-0:02
25K
15.53 mi11:45:551:43:396:4016:29
6:48
+0:05
30K
18.64 mi12:07:522:05:366:4421:57
7:04
+0:16
20M
20.00 mi12:17:452:15:296:469:53
7:16
+0:12
21M
21.00 mi12:25:422:23:266:507:57
7:57
+0:41
35K
21.75 mi12:31:072:28:516:515:25
7:14
-0:43
23M
23.00 mi12:40:552:38:396:549:48
7:50
+0:36
24M
24.00 mi12:48:322:46:166:567:37
7:37
-0:13
40K
24.85 mi12:55:212:53:056:586:49
7:58
+0:21
25.2M
25.20 mi12:58:192:56:036:592:58
8:36
+0:38
Finish
26.22 mi13:06:313:04:157:028:12
8:03
-0:33

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

6:33 /mi

Average Pace

7:02 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:39

56% of race

Time at Steady Pace

37:15

20% of race

Time at Slower Pace

43:21

24% of race

Average Pace: 7:02 /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 mi10:22:5920:436:4020:43
6:40
#3389
10K
6.21 mi10:43:2041:046:3720:21
6:33
#3234
15K
9.32 mi11:03:521:01:366:3720:32
6:37
#3261
20K
12.43 mi11:24:511:22:356:3920:59
6:45
#3417
Half
13.11 mi11:29:261:27:106:394:35
6:43
#3457
25K
15.53 mi11:45:551:43:396:4016:29
6:48
#3530
30K
18.64 mi12:07:522:05:366:4421:57
7:04
#3760
20M
20.00 mi12:17:452:15:296:469:53
7:16
#3911
21M
21.00 mi12:25:422:23:266:507:57
7:57
#4146
35K
21.75 mi12:31:072:28:516:515:25
7:14
#4255
23M
23.00 mi12:40:552:38:396:549:48
7:50
#4576
24M
24.00 mi12:48:322:46:166:567:37
7:37
#4733
40K
24.85 mi12:55:212:53:056:586:49
7:58
#4868
25.2M
25.20 mi12:58:192:56:036:592:58
8:36
#4921
Finish
26.22 mi13:06:313:04:157:028:12
8:03
#5091
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi3389319631963373(Top 13%)3202(Top 21%)3202(Top 156%)
10K6.21 mi3.10 mi3234+1553067+1293067+1293136(Top 12%)2992(Top 20%)2992(Top 146%)
15K9.32 mi3.11 mi3261-273100-333100-333373(Top 13%)3202(Top 21%)3202(Top 156%)
20K12.43 mi3.11 mi3417-1563240-1403240-1404030(Top 15%)3784(Top 25%)3784(Top 184%)
Half13.11 mi0.68 mi3457-403277-373277-374564(Top 17%)4256(Top 28%)4256(Top 207%)
25K15.53 mi2.42 mi3530-733348-713348-714147(Top 16%)3887(Top 26%)3887(Top 189%)
30K18.64 mi3.11 mi3760-2303550-2023550-2024755(Top 18%)4389(Top 29%)4389(Top 214%)
20M20.00 mi1.36 mi3911-1513683-1333683-1335473(Top 21%)4904(Top 32%)4904(Top 239%)
21M21.00 mi1.00 mi4146-2353886-2033886-2036992(Top 26%)5848(Top 39%)5848(Top 285%)
35K21.75 mi0.75 mi4255-1093981-953981-956722(Top 25%)5708(Top 38%)5708(Top 278%)
23M23.00 mi1.25 mi4576-3214262-2814262-2818565(Top 32%)6723(Top 44%)6723(Top 328%)
24M24.00 mi1.00 mi4733-1574396-1344396-1348468(Top 32%)6580(Top 43%)6580(Top 321%)
40K24.85 mi0.85 mi4868-1354493-974493-979808(Top 37%)7224(Top 48%)7224(Top 352%)
25.2M25.20 mi0.35 mi4921-534533-404533-4010056(Top 38%)7290(Top 48%)7290(Top 355%)
Finish26.22 mi1.02 mi5091-1704671-1384671-13812389(Top 47%)8457(Top 56%)8457(Top 412%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3373

Males

3202

M50-54

3202

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3136

Males

2992

M50-54

2992

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3373

Males

3202

M50-54

3202

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4030

Males

3784

M50-54

3784

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4564

Males

4256

M50-54

4256

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4147

Males

3887

M50-54

3887

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4755

Males

4389

M50-54

4389

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5473

Males

4904

M50-54

4904

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

6992

Males

5848

M50-54

5848

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

6722

Males

5708

M50-54

5708

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8565

Males

6723

M50-54

6723

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8468

Males

6580

M50-54

6580

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9808

Males

7224

M50-54

7224

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10056

Males

7290

M50-54

7290

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

12389

Males

8457

M50-54

8457

Passing Analysis

Category:
Athletes Passed
601
Passed By
2303
Net Change
-1702
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3389
5K → 10K25095+155#3389#3234
10K → 15K80107-27#3234#3261
15K → 20K45201-156#3261#3417
20K → Half343-40#3417#3457
Half → 25K53126-73#3457#3530
25K → 30K41271-230#3530#3760
30K → 20M27178-151#3760#3911
20M → 21M26261-235#3911#4146
21M → 35K12121-109#4146#4255
35K → 23M15336-321#4255#4576
23M → 24M16173-157#4576#4733
24M → 40K17152-135#4733#4868
40K → 25.2M760-53#4868#4921
25.2M → Finish9179-170#4921#5091
TOTALS6012303-1702
📊

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