Boston Marathon logo
BOSTON MARATHON 2023

Won Yi

Bib: 18192•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
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
9:27/mi
29:22
↑ 97↓ 3451.5%
10K· 6.21 mi
8:45/mi
56:34
↑ 79↓ 1380.4%
15K· 9.32 mi
8:45/mi
1:23:46
↑ 67↓ 78
20K· 12.43 mi
8:56/mi
1:51:32
↑ 106↓ 860.1%
Half· 13.11 mi
9:29/mi
1:58:00
↑ 19↓ 370.5%
25K· 15.53 mi
8:59/mi
2:19:47
↑ 66↓ 880.2%
30K· 18.64 mi
9:37/mi
2:49:39
↑ 181↓ 1480.2%
20M
9:42/mi
3:02:50
↑ 64↓ 500.2%
21M
10:33/mi
3:13:23
↑ 106↓ 241.6%
35K· 21.75 mi
9:23/mi
3:20:24
↑ 17↓ 861.7%
23M
10:27/mi
3:33:29
↑ 23↓ 630.6%
24M
9:24/mi
3:42:53
↓ 821.3%
40K· 24.85 mi
10:01/mi
3:51:27
↓ 200.3%
25.2M
10:50/mi
3:55:11
↑ 13↓ 160.2%
Finish· 26.22 mi
9:49/mi
4:05:11
↑ 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
Time1:58:00
Pace9:00 /mi
2nd Half
Distance13.11 mi
Time2:07:11
Pace9:42 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:0629:229:2729:22
9:27
-
10K
6.21 mi12:13:1856:349:0627:12
8:45
-0:42
15K
9.32 mi12:40:301:23:468:5927:12
8:45
0:00
20K
12.43 mi13:08:161:51:328:5827:46
8:56
+0:11
Half
13.11 mi13:14:441:58:009:006:28
9:29
+0:33
25K
15.53 mi13:36:312:19:479:0021:47
8:59
-0:30
30K
18.64 mi14:06:232:49:399:0629:52
9:37
+0:38
20M
20.00 mi14:19:343:02:509:0813:11
9:42
+0:05
21M
21.00 mi14:30:073:13:239:1310:33
10:33
+0:51
35K
21.75 mi14:37:083:20:249:137:01
9:23
-1:10
23M
23.00 mi14:50:133:33:299:1713:05
10:27
+1:04
24M
24.00 mi14:59:373:42:539:179:24
9:24
-1:03
40K
24.85 mi15:08:113:51:279:198:34
10:01
+0:37
25.2M
25.20 mi15:11:553:55:119:203:44
10:50
+0:49
Finish
26.22 mi15:21:554:05:119:2110:00
9:49
-1:01

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

8:45 /mi

Average Pace

9:21 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:57

42% of race

Time at Steady Pace

1:35:18

39% of race

Time at Slower Pace

45:56

19% of race

Average Pace: 9:21 /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 mi11:46:0629:229:2729:22
9:27
#21949
10K
6.21 mi12:13:1856:349:0627:12
8:45
#21061
15K
9.32 mi12:40:301:23:468:5927:12
8:45
#20509
20K
12.43 mi13:08:161:51:328:5827:46
8:56
#20237
Half
13.11 mi13:14:441:58:009:006:28
9:29
#20365
25K
15.53 mi13:36:312:19:479:0021:47
8:59
#20112
30K
18.64 mi14:06:232:49:399:0629:52
9:37
#20062
20M
20.00 mi14:19:343:02:509:0813:11
9:42
#20003
21M
21.00 mi14:30:073:13:239:1310:33
10:33
#19984
35K
21.75 mi14:37:083:20:249:137:01
9:23
#19958
23M
23.00 mi14:50:133:33:299:1713:05
10:27
#20068
24M
24.00 mi14:59:373:42:539:179:24
9:24
#20030
40K
24.85 mi15:08:113:51:279:198:34
10:01
#20022
25.2M
25.20 mi15:11:553:55:119:203:44
10:50
#20021
Finish
26.22 mi15:21:554:05:119:2110:00
9:49
#20052
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi21949130701307019257(Top 72%)11991(Top 79%)11991(Top 1080%)
10K6.21 mi3.10 mi21061+88812686+38412686+38419701(Top 74%)12169(Top 80%)12169(Top 1096%)
15K9.32 mi3.11 mi20509+55212470+21612470+21619257(Top 72%)11991(Top 79%)11991(Top 1080%)
20K12.43 mi3.11 mi20237+27212364+10612364+10619396(Top 73%)12054(Top 79%)12054(Top 1086%)
Half13.11 mi0.68 mi20365-12812423-5912423-5922026(Top 83%)13196(Top 87%)13196(Top 1189%)
25K15.53 mi2.42 mi20112+25312324+9912324+9918870(Top 71%)11795(Top 78%)11795(Top 1063%)
30K18.64 mi3.11 mi20062+5012280+4412280+4419834(Top 75%)12140(Top 80%)12140(Top 1094%)
20M20.00 mi1.36 mi20003+5912237+4312237+4319553(Top 73%)11925(Top 79%)11925(Top 1074%)
21M21.00 mi1.00 mi19984+1912222+1512222+1519735(Top 74%)11931(Top 79%)11931(Top 1075%)
35K21.75 mi0.75 mi19958+2612209+1312209+1319433(Top 73%)11792(Top 78%)11792(Top 1062%)
23M23.00 mi1.25 mi20068-11012236-2712236-2721185(Top 80%)12543(Top 83%)12543(Top 1130%)
24M24.00 mi1.00 mi20030+3812219+1712219+1718845(Top 71%)11469(Top 76%)11469(Top 1033%)
40K24.85 mi0.85 mi20022+812206+1312206+1320004(Top 75%)11918(Top 79%)11918(Top 1074%)
25.2M25.20 mi0.35 mi20021+112197+912197+920019(Top 75%)11927(Top 79%)11927(Top 1075%)
Finish26.22 mi1.02 mi20052-3112202-512202-521186(Top 80%)12509(Top 82%)12509(Top 1127%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19257

Males

11991

M60-64

11991

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19701

Males

12169

M60-64

12169

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19257

Males

11991

M60-64

11991

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19396

Males

12054

M60-64

12054

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

22026

Males

13196

M60-64

13196

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18870

Males

11795

M60-64

11795

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19834

Males

12140

M60-64

12140

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

19553

Males

11925

M60-64

11925

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19735

Males

11931

M60-64

11931

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

19433

Males

11792

M60-64

11792

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

21185

Males

12543

M60-64

12543

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18845

Males

11469

M60-64

11469

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

20004

Males

11918

M60-64

11918

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

20019

Males

11927

M60-64

11927

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

21186

Males

12509

M60-64

12509

Passing Analysis

Category:
Athletes Passed
2749
Passed By
852
Net Change
+1897
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21949
5K → 10K92234+888#21949#21061
10K → 15K57422+552#21061#20509
15K → 20K32755+272#20509#20237
20K → Half6134-128#20237#20365
Half → 25K28128+253#20365#20112
25K → 30K181131+50#20112#20062
30K → 20M10445+59#20062#20003
20M → 21M9475+19#20003#19984
21M → 35K4822+26#19984#19958
35K → 23M48158-110#19958#20068
23M → 24M6022+38#20068#20030
24M → 40K5345+8#20030#20022
40K → 25.2M2019+1#20022#20021
25.2M → Finish3162-31#20021#20052
TOTALS2749852+1897
📊

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