Boston Marathon logo
BOSTON MARATHON 2024

Sin Hyeong Choi

Bib: 4172•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 23%
Gender (Male)
#0 / 14578
Top 35%
Masters (Masters Men)
#0 / 9729
Top 23%
Division (M45-49)
#0 / 2218
Top 32%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:58
Rank: #2882
Start → 5K
19:58 | 6:26/mi
10K· 6.21 mi
40:28
Rank: #3234 (-352)
5K → 10K
20:30 | 6:36/mi
15K· 9.32 mi
1:01:17
Rank: #3409 (-175)
10K → 15K
20:49 | 6:42/mi
20K· 12.43 mi
1:22:26
Rank: #3488 (-79)
15K → 20K
21:09 | 6:48/mi
Half· 13.11 mi
1:27:05
Rank: #3542 (-54)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:43:45
Rank: #3500 (+42)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:07:17
Rank: #3924 (-424)
25K → 30K
23:32 | 7:34/mi
20M
2:18:49
Rank: #4366 (-442)
30K → 20M
11:32 | 8:29/mi
21M
2:28:36
Rank: #4736 (-370)
20M → 21M
9:47 | 9:47/mi
35K· 21.75 mi
2:35:21
Rank: #4966 (-230)
21M → 35K
6:45 | 9:01/mi
23M
2:46:40
Rank: #5210 (-244)
35K → 23M
11:19 | 9:02/mi
24M
2:55:21
Rank: #5355 (-145)
23M → 24M
8:41 | 8:41/mi
40K· 24.85 mi
3:03:35
Rank: #5621 (-266)
24M → 40K
8:14 | 9:38/mi
25.2M
3:07:14
Rank: #5722 (-101)
40K → 25.2M
3:39 | 10:35/mi
Finish· 26.22 mi
3:16:21
Rank: #5995 (-273)
25.2M → Finish
9:07 | 8:57/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
Time1:27:05
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:49:16
Pace8:20 /mi
📊Positive Split: 25.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4619:586:2619:58
6:26
-
10K
6.21 mi10:43:1640:286:3120:30
6:36
+0:10
15K
9.32 mi11:04:051:01:176:3520:49
6:42
+0:06
20K
12.43 mi11:25:141:22:266:3821:09
6:48
+0:06
Half
13.11 mi11:29:531:27:056:394:39
6:49
+0:01
25K
15.53 mi11:46:331:43:456:4116:40
6:52
+0:03
30K
18.64 mi12:10:052:07:176:5023:32
7:34
+0:42
20M
20.00 mi12:21:372:18:496:5611:32
8:29
+0:55
21M
21.00 mi12:31:242:28:367:059:47
9:47
+1:18
35K
21.75 mi12:38:092:35:217:096:45
9:01
-0:46
23M
23.00 mi12:49:282:46:407:1511:19
9:02
+0:01
24M
24.00 mi12:58:092:55:217:188:41
8:41
-0:21
40K
24.85 mi13:06:233:03:357:238:14
9:38
+0:57
25.2M
25.20 mi13:10:023:07:147:263:39
10:35
+0:57
Finish
26.22 mi13:19:093:16:217:309:07
8:57
-1:38

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

6:26 /mi

Average Pace

7:30 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:17

65% of race

Time at Steady Pace

47:24

24% of race

Time at Slower Pace

21:40

11% of race

Average Pace: 7:29 /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 mi10:22:4619:586:2619:58
6:26
#2882
10K
6.21 mi10:43:1640:286:3120:30
6:36
#3234
15K
9.32 mi11:04:051:01:176:3520:49
6:42
#3409
20K
12.43 mi11:25:141:22:266:3821:09
6:48
#3488
Half
13.11 mi11:29:531:27:056:394:39
6:49
#3542
25K
15.53 mi11:46:331:43:456:4116:40
6:52
#3500
30K
18.64 mi12:10:052:07:176:5023:32
7:34
#3924
20M
20.00 mi12:21:372:18:496:5611:32
8:29
#4366
21M
21.00 mi12:31:242:28:367:059:47
9:47
#4736
35K
21.75 mi12:38:092:35:217:096:45
9:01
#4966
23M
23.00 mi12:49:282:46:407:1511:19
9:02
#5210
24M
24.00 mi12:58:092:55:217:188:41
8:41
#5355
40K
24.85 mi13:06:233:03:357:238:14
9:38
#5621
25.2M
25.20 mi13:10:023:07:147:263:39
10:35
#5722
Finish
26.22 mi13:19:093:16:217:309:07
8:57
#5995
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi2882276127613941(Top 15%)3711(Top 25%)3711(Top 167%)
10K6.21 mi3.10 mi3234-3523083-3223083-3223604(Top 14%)3414(Top 23%)3414(Top 154%)
15K9.32 mi3.11 mi3409-1753243-1603243-1603941(Top 15%)3711(Top 25%)3711(Top 167%)
20K12.43 mi3.11 mi3488-793313-703313-703921(Top 15%)3674(Top 25%)3674(Top 166%)
Half13.11 mi0.68 mi3542-543362-493362-494653(Top 18%)4291(Top 29%)4291(Top 193%)
25K15.53 mi2.42 mi3500+423318+443318+443648(Top 14%)3398(Top 23%)3398(Top 153%)
30K18.64 mi3.11 mi3924-4243676-3583676-3585481(Top 21%)4666(Top 32%)4666(Top 210%)
20M20.00 mi1.36 mi4366-4424030-3544030-3549338(Top 37%)6687(Top 46%)6687(Top 301%)
21M21.00 mi1.00 mi4736-3704314-2844314-28412021(Top 47%)7714(Top 53%)7714(Top 348%)
35K21.75 mi0.75 mi4966-2304463-1494463-14913368(Top 52%)8330(Top 57%)8330(Top 376%)
23M23.00 mi1.25 mi5210-2444612-1494612-14911343(Top 44%)7234(Top 50%)7234(Top 326%)
24M24.00 mi1.00 mi5355-1454691-794691-7910452(Top 41%)6755(Top 46%)6755(Top 305%)
40K24.85 mi0.85 mi5621-2664846-1554846-15513584(Top 53%)8206(Top 56%)8206(Top 370%)
25.2M25.20 mi0.35 mi5722-1014900-544900-5413035(Top 51%)7886(Top 54%)7886(Top 356%)
Finish26.22 mi1.02 mi5995-2735052-1525052-15213898(Top 54%)8436(Top 58%)8436(Top 380%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3941

Males

3711

M45-49

3711

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3604

Males

3414

M45-49

3414

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3941

Males

3711

M45-49

3711

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

3921

Males

3674

M45-49

3674

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4653

Males

4291

M45-49

4291

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3648

Males

3398

M45-49

3398

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5481

Males

4666

M45-49

4666

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9338

Males

6687

M45-49

6687

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

12021

Males

7714

M45-49

7714

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

13368

Males

8330

M45-49

8330

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11343

Males

7234

M45-49

7234

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

10452

Males

6755

M45-49

6755

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

13584

Males

8206

M45-49

8206

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13035

Males

7886

M45-49

7886

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

13898

Males

8436

M45-49

8436

Passing Analysis

Category:
Athletes Passed
622
Passed By
3735
Net Change
-3113
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2882
5K → 10K42394-352#2882#3234
10K → 15K56231-175#3234#3409
15K → 20K90169-79#3409#3488
20K → Half559-54#3488#3542
Half → 25K146104+42#3542#3500
25K → 30K78502-424#3500#3924
30K → 20M34476-442#3924#4366
20M → 21M23393-370#4366#4736
21M → 35K10240-230#4736#4966
35K → 23M44288-244#4966#5210
23M → 24M38183-145#5210#5355
24M → 40K28294-266#5355#5621
40K → 25.2M9110-101#5621#5722
25.2M → Finish19292-273#5722#5995
TOTALS6223735-3113
📊

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