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BOSTON MARATHON 2024

Sung Guk Choi

Bib: 12376•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 41%
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Top 43%
Division (M55-59)
#0 / 1529
Top 30%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:34
Rank: #8903
Start → 5K
7:16/mi
22:34 split
10K· 6.21 mi
44:58
Rank: #8412 (+491)
5K → 10K
7:13/mi
22:24 split
15K· 9.32 mi
1:07:58
Rank: #8553 (-141)
10K → 15K
7:24/mi
23:00 split
20K· 12.43 mi
1:32:00
Rank: #8877 (-324)
15K → 20K
7:44/mi
24:02 split
Half· 13.11 mi
1:37:16
Rank: #8969 (-92)
20K → Half
7:43/mi
5:16 split
25K· 15.53 mi
1:56:52
Rank: #9246 (-277)
Half → 25K
8:05/mi
19:36 split
30K· 18.64 mi
2:23:25
Rank: #9495 (-249)
25K → 30K
8:33/mi
26:33 split
20M
2:35:53
Rank: #9733 (-238)
30K → 20M
9:10/mi
12:28 split
21M
2:46:35
Rank: #10169 (-436)
20M → 21M
10:42/mi
10:42 split
35K· 21.75 mi
2:52:47
Rank: #10114 (+55)
21M → 35K
8:17/mi
6:12 split
23M
3:04:17
Rank: #10202 (-88)
35K → 23M
9:11/mi
11:30 split
24M
3:13:46
Rank: #10389 (-187)
23M → 24M
9:29/mi
9:29 split
40K· 24.85 mi
3:21:09
Rank: #10316 (+73)
24M → 40K
8:38/mi
7:23 split
25.2M
3:25:12
Rank: #10468 (-152)
40K → 25.2M
11:45/mi
4:03 split
Finish· 26.22 mi
3:33:55
Rank: #10497 (-29)
25.2M → Finish
8:33/mi
8:43 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:16
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time1:56:39
Pace8:54 /mi
📊Positive Split: 19.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5522:347:1622:34
7:16
-
10K
6.21 mi11:13:1944:587:1422:24
7:13
-0:03
15K
9.32 mi11:36:191:07:587:1823:00
7:24
+0:11
20K
12.43 mi12:00:211:32:007:2424:02
7:44
+0:20
Half
13.11 mi12:05:371:37:167:255:16
7:43
-0:01
25K
15.53 mi12:25:131:56:527:3119:36
8:05
+0:22
30K
18.64 mi12:51:462:23:257:4226:33
8:33
+0:28
20M
20.00 mi13:04:142:35:537:4812:28
9:10
+0:37
21M
21.00 mi13:14:562:46:357:5610:42
10:42
+1:32
35K
21.75 mi13:21:082:52:477:576:12
8:17
-2:25
23M
23.00 mi13:32:383:04:178:0111:30
9:11
+0:54
24M
24.00 mi13:42:073:13:468:049:29
9:29
+0:18
40K
24.85 mi13:49:303:21:098:067:23
8:38
-0:51
25.2M
25.20 mi13:53:333:25:128:094:03
11:45
+3:07
Finish
26.22 mi14:02:163:33:558:108:43
8:33
-3:12

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

7:13 /mi

Average Pace

8:10 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:16

45% of race

Time at Steady Pace

1:08:27

32% of race

Time at Slower Pace

48:12

23% of race

Average Pace: 8:10 /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 mi10:50:5522:347:1622:34
7:16
#8903
10K
6.21 mi11:13:1944:587:1422:24
7:13
#8412
15K
9.32 mi11:36:191:07:587:1823:00
7:24
#8553
20K
12.43 mi12:00:211:32:007:2424:02
7:44
#8877
Half
13.11 mi12:05:371:37:167:255:16
7:43
#8969
25K
15.53 mi12:25:131:56:527:3119:36
8:05
#9246
30K
18.64 mi12:51:462:23:257:4226:33
8:33
#9495
20M
20.00 mi13:04:142:35:537:4812:28
9:10
#9733
21M
21.00 mi13:14:562:46:357:5610:42
10:42
#10169
35K
21.75 mi13:21:082:52:477:576:12
8:17
#10114
23M
23.00 mi13:32:383:04:178:0111:30
9:11
#10202
24M
24.00 mi13:42:073:13:468:049:29
9:29
#10389
40K
24.85 mi13:49:303:21:098:067:23
8:38
#10316
25.2M
25.20 mi13:53:333:25:128:094:03
11:45
#10468
Finish
26.22 mi14:02:163:33:558:108:43
8:33
#10497
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi8903734773478909(Top 35%)7234(Top 50%)7234(Top 473%)
10K6.21 mi3.10 mi8412+4917016+3317016+3317992(Top 31%)6740(Top 46%)6740(Top 441%)
15K9.32 mi3.11 mi8553-1417099-837099-838909(Top 35%)7234(Top 50%)7234(Top 473%)
20K12.43 mi3.11 mi8877-3247248-1497248-1499980(Top 39%)7641(Top 52%)7641(Top 500%)
Half13.11 mi0.68 mi8969-927289-417289-4110697(Top 42%)8026(Top 55%)8026(Top 525%)
25K15.53 mi2.42 mi9246-2777401-1127401-11210707(Top 42%)7863(Top 54%)7863(Top 514%)
30K18.64 mi3.11 mi9495-2497418-177418-1710871(Top 43%)7724(Top 53%)7724(Top 505%)
20M20.00 mi1.36 mi9733-2387475-577475-5712972(Top 51%)8382(Top 57%)8382(Top 548%)
21M21.00 mi1.00 mi10169-4367631-1567631-15615444(Top 60%)9368(Top 64%)9368(Top 613%)
35K21.75 mi0.75 mi10114+557571+607571+609463(Top 37%)6494(Top 45%)6494(Top 425%)
23M23.00 mi1.25 mi10202-887555+167555+1612052(Top 47%)7591(Top 52%)7591(Top 496%)
24M24.00 mi1.00 mi10389-1877590-357590-3514390(Top 56%)8713(Top 60%)8713(Top 570%)
40K24.85 mi0.85 mi10316+737515+757515+759040(Top 35%)5919(Top 41%)5919(Top 387%)
25.2M25.20 mi0.35 mi10468-1527567-527567-5216653(Top 65%)9747(Top 67%)9747(Top 637%)
Finish26.22 mi1.02 mi10497-297541+267541+2611798(Top 46%)7401(Top 51%)7401(Top 484%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

8909

Males

7234

M55-59

7234

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

7992

Males

6740

M55-59

6740

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

8909

Males

7234

M55-59

7234

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

9980

Males

7641

M55-59

7641

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

10697

Males

8026

M55-59

8026

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

10707

Males

7863

M55-59

7863

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

10871

Males

7724

M55-59

7724

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

12972

Males

8382

M55-59

8382

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

15444

Males

9368

M55-59

9368

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9463

Males

6494

M55-59

6494

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

12052

Males

7591

M55-59

7591

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

14390

Males

8713

M55-59

8713

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9040

Males

5919

M55-59

5919

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

16653

Males

9747

M55-59

9747

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

11798

Males

7401

M55-59

7401

Passing Analysis

Category:
Athletes Passed
1706*
Passed By
3297
Net Change
-1594
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8903
5K → 10K55463+491#8903#8412
10K → 15K131272-141#8412#8553
15K → 20K112436-324#8553#8877
20K → Half10102-92#8877#8969
Half → 25K132409-277#8969#9246
25K → 30K186435-249#9246#9495
30K → 20M85322-238#9495#9733
20M → 21M36470-436#9733#10169
21M → 35K9641+55#10169#10114
35K → 23M110198-88#10114#10202
23M → 24M56243-187#10202#10389
24M → 40K116*43+73#10389#10316
40K → 25.2M12164-152#10316#10468
25.2M → Finish7099-29#10468#10497
TOTALS1706*3297-1594

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

📊

Passing Visuals

Category:
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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