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BOSTON MARATHON 2024

Sung Jin Choi

Bib: 9092•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 20%
Gender (Male)
#0 / 14578
Top 31%
Masters (Masters Men)
#0 / 9729
Top 19%
Division (M50-54)
#0 / 1935
Top 15%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:10
Rank: #5743
Start → 5K
21:10 | 6:49/mi
10K· 6.21 mi
42:32
Rank: #5755 (-12)
5K → 10K
21:22 | 6:53/mi
15K· 9.32 mi
1:03:33
Rank: #5316 (+439)
10K → 15K
21:01 | 6:46/mi
20K· 12.43 mi
1:25:04
Rank: #5147 (+169)
15K → 20K
21:31 | 6:56/mi
Half· 13.11 mi
1:29:49
Rank: #5172 (-25)
20K → Half
4:45 | 6:58/mi
25K· 15.53 mi
1:47:19
Rank: #5154 (+18)
Half → 25K
17:30 | 7:13/mi
30K· 18.64 mi
2:10:54
Rank: #5132 (+22)
25K → 30K
23:35 | 7:35/mi
20M
2:21:59
Rank: #5247 (-115)
30K → 20M
11:05 | 8:09/mi
21M
2:30:31
Rank: #5220 (+27)
20M → 21M
8:32 | 8:32/mi
35K· 21.75 mi
2:36:11
Rank: #5169 (+51)
21M → 35K
5:40 | 7:34/mi
23M
2:45:59
Rank: #5049 (+120)
35K → 23M
9:48 | 7:50/mi
24M
2:54:27
Rank: #5149 (-100)
23M → 24M
8:28 | 8:28/mi
40K· 24.85 mi
3:02:02
Rank: #5259 (-110)
24M → 40K
7:35 | 8:52/mi
25.2M
3:05:04
Rank: #5223 (+36)
40K → 25.2M
3:02 | 8:48/mi
Finish· 26.22 mi
3:12:54
Rank: #5224 (-1)
25.2M → Finish
7:50 | 7:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:49
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:43:05
Pace7:52 /mi
📊Positive Split: 14.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:5021:106:4921:10
6:49
-
10K
6.21 mi11:08:1242:326:5121:22
6:53
+0:04
15K
9.32 mi11:29:131:03:336:4921:01
6:46
-0:07
20K
12.43 mi11:50:441:25:046:5121:31
6:56
+0:10
Half
13.11 mi11:55:291:29:496:514:45
6:58
+0:02
25K
15.53 mi12:12:591:47:196:5517:30
7:13
+0:15
30K
18.64 mi12:36:342:10:547:0123:35
7:35
+0:22
20M
20.00 mi12:47:392:21:597:0611:05
8:09
+0:34
21M
21.00 mi12:56:112:30:317:108:32
8:32
+0:23
35K
21.75 mi13:01:512:36:117:115:40
7:34
-0:58
23M
23.00 mi13:11:392:45:597:139:48
7:50
+0:16
24M
24.00 mi13:20:072:54:277:168:28
8:28
+0:38
40K
24.85 mi13:27:423:02:027:197:35
8:52
+0:24
25.2M
25.20 mi13:30:443:05:047:213:02
8:48
-0:04
Finish
26.22 mi13:38:343:12:547:227:50
7:41
-1:07

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

6:46 /mi

Average Pace

7:22 /mi

Slowest Pace

8:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:19

56% of race

Time at Steady Pace

46:53

24% of race

Time at Slower Pace

38:42

20% of race

Average Pace: 7:21 /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 mi10:46:5021:106:4921:10
6:49
#5743
10K
6.21 mi11:08:1242:326:5121:22
6:53
#5755
15K
9.32 mi11:29:131:03:336:4921:01
6:46
#5316
20K
12.43 mi11:50:441:25:046:5121:31
6:56
#5147
Half
13.11 mi11:55:291:29:496:514:45
6:58
#5172
25K
15.53 mi12:12:591:47:196:5517:30
7:13
#5154
30K
18.64 mi12:36:342:10:547:0123:35
7:35
#5132
20M
20.00 mi12:47:392:21:597:0611:05
8:09
#5247
21M
21.00 mi12:56:112:30:317:108:32
8:32
#5220
35K
21.75 mi13:01:512:36:117:115:40
7:34
#5169
23M
23.00 mi13:11:392:45:597:139:48
7:50
#5049
24M
24.00 mi13:20:072:54:277:168:28
8:28
#5149
40K
24.85 mi13:27:423:02:027:197:35
8:52
#5259
25.2M
25.20 mi13:30:443:05:047:213:02
8:48
#5223
Finish
26.22 mi13:38:343:12:547:227:50
7:41
#5224
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5743523652364433(Top 17%)4135(Top 28%)4135(Top 214%)
10K6.21 mi3.10 mi5755-125251-155251-155828(Top 23%)5282(Top 36%)5282(Top 273%)
15K9.32 mi3.11 mi5316+4394905+3464905+3464433(Top 17%)4135(Top 28%)4135(Top 214%)
20K12.43 mi3.11 mi5147+1694749+1564749+1564801(Top 19%)4406(Top 30%)4406(Top 228%)
Half13.11 mi0.68 mi5172-254765-164765-165487(Top 21%)4941(Top 34%)4941(Top 255%)
25K15.53 mi2.42 mi5154+184714+514714+515402(Top 21%)4778(Top 33%)4778(Top 247%)
30K18.64 mi3.11 mi5132+224670+444670+445563(Top 22%)4719(Top 32%)4719(Top 244%)
20M20.00 mi1.36 mi5247-1154723-534723-537578(Top 30%)5757(Top 39%)5757(Top 298%)
21M21.00 mi1.00 mi5220+274676+474676+476356(Top 25%)4885(Top 34%)4885(Top 252%)
35K21.75 mi0.75 mi5169+514621+554621+555396(Top 21%)4320(Top 30%)4320(Top 223%)
23M23.00 mi1.25 mi5049+1204500+1214500+1214917(Top 19%)3927(Top 27%)3927(Top 203%)
24M24.00 mi1.00 mi5149-1004544-444544-449223(Top 36%)6140(Top 42%)6140(Top 317%)
40K24.85 mi0.85 mi5259-1104594-504594-5010211(Top 40%)6505(Top 45%)6505(Top 336%)
25.2M25.20 mi0.35 mi5223+364552+424552+425605(Top 22%)4050(Top 28%)4050(Top 209%)
Finish26.22 mi1.02 mi5224-14523+294523+296626(Top 26%)4657(Top 32%)4657(Top 241%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4433

Males

4135

M50-54

4135

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

5828

Males

5282

M50-54

5282

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4433

Males

4135

M50-54

4135

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

4801

Males

4406

M50-54

4406

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5487

Males

4941

M50-54

4941

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5402

Males

4778

M50-54

4778

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5563

Males

4719

M50-54

4719

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

7578

Males

5757

M50-54

5757

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6356

Males

4885

M50-54

4885

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5396

Males

4320

M50-54

4320

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

4917

Males

3927

M50-54

3927

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

9223

Males

6140

M50-54

6140

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10211

Males

6505

M50-54

6505

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5605

Males

4050

M50-54

4050

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

6626

Males

4657

M50-54

4657

Passing Analysis

Category:
Athletes Passed
1878
Passed By
1359
Net Change
+519
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5743
5K → 10K177189-12#5743#5755
10K → 15K4489+439#5755#5316
15K → 20K25081+169#5316#5147
20K → Half1944-25#5147#5172
Half → 25K184166+18#5172#5154
25K → 30K187165+22#5154#5132
30K → 20M65180-115#5132#5247
20M → 21M9871+27#5247#5220
21M → 35K8332+51#5220#5169
35K → 23M15939+120#5169#5049
23M → 24M40140-100#5049#5149
24M → 40K48158-110#5149#5259
40K → 25.2M5418+36#5259#5223
25.2M → Finish6667-1#5223#5224
TOTALS18781359+519
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing