Boston Marathon logo
BOSTON MARATHON 2023

Hyun Joong Lee

Bib: 11842•M

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 34%
Gender (Male)
#0 / 15176
Top 49%
Masters (Masters Men)
#0 / 9891
Top 37%
Division (M55-59)
#0 / 1422
Top 18%
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
7:38/mi
23:42
↑ 97↓ 3451.5%
10K· 6.21 mi
7:02/mi
45:32
↑ 79↓ 1380.4%
15K· 9.32 mi
6:56/mi
1:07:06
↑ 67↓ 78
20K· 12.43 mi
7:01/mi
1:28:54
↑ 106↓ 860.1%
Half· 13.11 mi
6:49/mi
1:33:33
↑ 19↓ 370.5%
25K· 15.53 mi
7:06/mi
1:50:45
↑ 66↓ 880.2%
30K· 18.64 mi
7:23/mi
2:13:40
↑ 181↓ 1480.2%
20M
7:22/mi
2:23:41
↑ 64↓ 500.2%
21M
7:57/mi
2:31:38
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:37:09
↑ 17↓ 861.7%
23M
8:06/mi
2:47:18
↑ 23↓ 630.6%
24M
9:29/mi
2:56:47
↓ 821.3%
40K· 24.85 mi
11:05/mi
3:06:16
↓ 200.3%
25.2M
11:13/mi
3:10:08
↑ 13↓ 160.2%
Finish· 26.22 mi
9:21/mi
3:19:40
↑ 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
Time1:33:33
Pace7:08 /mi
2nd Half
Distance13.11 mi
Time1:46:07
Pace8:06 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2223:427:3823:42
7:38
-
10K
6.21 mi11:12:1245:327:2021:50
7:02
-0:36
15K
9.32 mi11:33:461:07:067:1221:34
6:56
-0:06
20K
12.43 mi11:55:341:28:547:0921:48
7:01
+0:05
Half
13.11 mi12:00:131:33:337:084:39
6:49
-0:12
25K
15.53 mi12:17:251:50:457:0817:12
7:06
+0:17
30K
18.64 mi12:40:202:13:407:1022:55
7:23
+0:17
20M
20.00 mi12:50:212:23:417:1110:01
7:22
-0:01
21M
21.00 mi12:58:182:31:387:137:57
7:57
+0:35
35K
21.75 mi13:03:492:37:097:145:31
7:22
-0:35
23M
23.00 mi13:13:582:47:187:1610:09
8:06
+0:44
24M
24.00 mi13:23:272:56:477:229:29
9:29
+1:23
40K
24.85 mi13:32:563:06:167:309:29
11:05
+1:36
25.2M
25.20 mi13:36:483:10:087:333:52
11:13
+0:08
Finish
26.22 mi13:46:203:19:407:379:32
9:21
-1:52

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

6:49 /mi

Average Pace

7:37 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:37:09

79% of race

Time at Slower Pace

42:31

21% of race

Average Pace: 7:37 /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 mi10:50:2223:427:3823:42
7:38
#10777
10K
6.21 mi11:12:1245:327:2021:50
7:02
#8640
15K
9.32 mi11:33:461:07:067:1221:34
6:56
#7742
20K
12.43 mi11:55:341:28:547:0921:48
7:01
#7237
Half
13.11 mi12:00:131:33:337:084:39
6:49
#7153
25K
15.53 mi12:17:251:50:457:0817:12
7:06
#6942
30K
18.64 mi12:40:202:13:407:1022:55
7:23
#6817
20M
20.00 mi12:50:212:23:417:1110:01
7:22
#6735
21M
21.00 mi12:58:182:31:387:137:57
7:57
#6706
35K
21.75 mi13:03:492:37:097:145:31
7:22
#6703
23M
23.00 mi13:13:582:47:187:1610:09
8:06
#6839
24M
24.00 mi13:23:272:56:477:229:29
9:29
#7381
40K
24.85 mi13:32:563:06:167:309:29
11:05
#8270
25.2M
25.20 mi13:36:483:10:087:333:52
11:13
#8575
Finish
26.22 mi13:46:203:19:407:379:32
9:21
#9102
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi10777854985496220(Top 23%)5639(Top 37%)5639(Top 397%)
10K6.21 mi3.10 mi8640+21377361+11887361+11887011(Top 26%)6251(Top 41%)6251(Top 440%)
15K9.32 mi3.11 mi7742+8986788+5736788+5736220(Top 23%)5639(Top 37%)5639(Top 397%)
20K12.43 mi3.11 mi7237+5056420+3686420+3686090(Top 23%)5540(Top 37%)5540(Top 390%)
Half13.11 mi0.68 mi7153+846363+576363+575457(Top 20%)5040(Top 33%)5040(Top 354%)
25K15.53 mi2.42 mi6942+2116196+1676196+1676083(Top 23%)5509(Top 36%)5509(Top 387%)
30K18.64 mi3.11 mi6817+1256078+1186078+1186471(Top 24%)5715(Top 38%)5715(Top 402%)
20M20.00 mi1.36 mi6735+826005+736005+736049(Top 23%)5334(Top 35%)5334(Top 375%)
21M21.00 mi1.00 mi6706+295967+385967+387034(Top 26%)5890(Top 39%)5890(Top 414%)
35K21.75 mi0.75 mi6703+35960+75960+77644(Top 29%)6286(Top 41%)6286(Top 442%)
23M23.00 mi1.25 mi6839-1366046-866046-8610489(Top 39%)7711(Top 51%)7711(Top 542%)
24M24.00 mi1.00 mi7381-5426391-3456391-34519130(Top 72%)11583(Top 76%)11583(Top 815%)
40K24.85 mi0.85 mi8270-8896933-5426933-54222522(Top 85%)13090(Top 86%)13090(Top 921%)
25.2M25.20 mi0.35 mi8575-3057119-1867119-18620896(Top 78%)12329(Top 81%)12329(Top 867%)
Finish26.22 mi1.02 mi9102-5277399-2807399-28019565(Top 73%)11771(Top 78%)11771(Top 828%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6220

Males

5639

M55-59

5639

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

7011

Males

6251

M55-59

6251

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6220

Males

5639

M55-59

5639

15K→20K

9.3 - 12.4 mi

Top 23%
×5story building
+106ft-86ft

Overall

6090

Males

5540

M55-59

5540

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5457

Males

5040

M55-59

5040

Half→25K

13.1 - 15.5 mi

Top 23%
×4story building
+66ft-88ft

Overall

6083

Males

5509

M55-59

5509

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6471

Males

5715

M55-59

5715

30K→20M

18.6 - 20.0 mi

Top 23%
×5story building
+64ft-50ft

Overall

6049

Males

5334

M55-59

5334

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

7034

Males

5890

M55-59

5890

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7644

Males

6286

M55-59

6286

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

10489

Males

7711

M55-59

7711

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19130

Males

11583

M55-59

11583

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22522

Males

13090

M55-59

13090

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20896

Males

12329

M55-59

12329

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

19565

Males

11771

M55-59

11771

Passing Analysis

Category:
Athletes Passed
4302*
Passed By
2627
Net Change
+1675
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10777
5K → 10K2144*7+2137#10777#8640
10K → 15K8991+898#8640#7742
15K → 20K5072+505#7742#7237
20K → Half840+84#7237#7153
Half → 25K2198+211#7153#6942
25K → 30K18257+125#6942#6817
30K → 20M10624+82#6817#6735
20M → 21M7546+29#6735#6706
21M → 35K3936+3#6706#6703
35K → 23M35171-136#6703#6839
23M → 24M5547-542#6839#7381
24M → 40K2891-889#7381#8270
40K → 25.2M3308-305#8270#8575
25.2M → Finish2529-527#8575#9102
TOTALS4302*2627+1675

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing