Boston Marathon logo
BOSTON MARATHON 2024

Youngil Choi

Bib: 15253•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 38%
Gender (Male)
#0 / 14578
Top 49%
Masters (Masters Men)
#0 / 9729
Top 39%
Division (M55-59)
#0 / 1529
Top 25%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
7:43/mi
23:57
↑ 97↓ 3451.5%
10K· 6.21 mi
7:39/mi
47:43
↑ 79↓ 1380.4%
15K· 9.32 mi
7:50/mi
1:12:04
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:37:18
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:42:43
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
2:02:20
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:28:53
↑ 181↓ 1480.2%
20M
8:23/mi
2:40:16
↑ 64↓ 500.2%
21M
8:45/mi
2:49:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:16/mi
2:55:12
↑ 17↓ 861.7%
23M
8:05/mi
3:05:19
↑ 23↓ 630.6%
24M
7:35/mi
3:12:54
↓ 821.3%
40K· 24.85 mi
7:47/mi
3:19:33
↓ 200.3%
25.2M
8:19/mi
3:22:25
↑ 13↓ 160.2%
Finish· 26.22 mi
7:34/mi
3:30:08
↑ 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
Time1:42:43
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:47:25
Pace8:12 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:1523:577:4323:57
7:43
-
10K
6.21 mi11:21:0147:437:4123:46
7:39
-0:04
15K
9.32 mi11:45:221:12:047:4424:21
7:50
+0:11
20K
12.43 mi12:10:361:37:187:5025:14
8:07
+0:17
Half
13.11 mi12:16:011:42:437:505:25
7:56
-0:11
25K
15.53 mi12:35:382:02:207:5319:37
8:05
+0:09
30K
18.64 mi13:02:112:28:537:5926:33
8:33
+0:28
20M
20.00 mi13:13:342:40:168:0111:23
8:23
-0:10
21M
21.00 mi13:22:192:49:018:038:45
8:45
+0:22
35K
21.75 mi13:28:302:55:128:036:11
8:16
-0:29
23M
23.00 mi13:38:373:05:198:0310:07
8:05
-0:11
24M
24.00 mi13:46:123:12:548:027:35
7:35
-0:30
40K
24.85 mi13:52:513:19:338:026:39
7:47
+0:12
25.2M
25.20 mi13:55:433:22:258:022:52
8:19
+0:32
Finish
26.22 mi14:03:263:30:088:017:43
7:34
-0:45

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

7:34 /mi

Average Pace

8:01 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:27

78% of race

Time at Steady Pace

46:41

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:01 /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 mi10:57:1523:577:4323:57
7:43
#12372
10K
6.21 mi11:21:0147:437:4123:46
7:39
#11898
15K
9.32 mi11:45:221:12:047:4424:21
7:50
#11986
20K
12.43 mi12:10:361:37:187:5025:14
8:07
#12119
Half
13.11 mi12:16:011:42:437:505:25
7:56
#12119
25K
15.53 mi12:35:382:02:207:5319:37
8:05
#11791
30K
18.64 mi13:02:112:28:537:5926:33
8:33
#11565
20M
20.00 mi13:13:342:40:168:0111:23
8:23
#11287
21M
21.00 mi13:22:192:49:018:038:45
8:45
#10930
35K
21.75 mi13:28:302:55:128:036:11
8:16
#10833
23M
23.00 mi13:38:373:05:198:0310:07
8:05
#10484
24M
24.00 mi13:46:123:12:548:027:35
7:35
#10153
40K
24.85 mi13:52:513:19:338:026:39
7:47
#9914
25.2M
25.20 mi13:55:433:22:258:022:52
8:19
#9759
Finish
26.22 mi14:03:263:30:088:017:43
7:34
#9596
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi123728999899912218(Top 48%)8819(Top 60%)8819(Top 577%)
10K6.21 mi3.10 mi11898+4748755+2448755+24411452(Top 45%)8526(Top 58%)8526(Top 558%)
15K9.32 mi3.11 mi11986-888763-88763-812218(Top 48%)8819(Top 60%)8819(Top 577%)
20K12.43 mi3.11 mi12119-1338800-378800-3712656(Top 50%)8966(Top 62%)8966(Top 586%)
Half13.11 mi0.68 mi121198795+58795+512234(Top 48%)8735(Top 60%)8735(Top 571%)
25K15.53 mi2.42 mi11791+3288614+1818614+18110748(Top 42%)7882(Top 54%)7882(Top 516%)
30K18.64 mi3.11 mi11565+2268414+2008414+20010868(Top 43%)7721(Top 53%)7721(Top 505%)
20M20.00 mi1.36 mi11287+2788231+1838231+1838777(Top 34%)6398(Top 44%)6398(Top 418%)
21M21.00 mi1.00 mi10930+3578005+2268005+2267387(Top 29%)5485(Top 38%)5485(Top 359%)
35K21.75 mi0.75 mi10833+977918+877918+879326(Top 37%)6418(Top 44%)6418(Top 420%)
23M23.00 mi1.25 mi10484+3497685+2337685+2336160(Top 24%)4630(Top 32%)4630(Top 303%)
24M24.00 mi1.00 mi10153+3317479+2067479+2064469(Top 17%)3593(Top 25%)3593(Top 235%)
40K24.85 mi0.85 mi9914+2397322+1577322+1574673(Top 18%)3611(Top 25%)3611(Top 236%)
25.2M25.20 mi0.35 mi9759+1557225+977225+973774(Top 15%)3033(Top 21%)3033(Top 198%)
Finish26.22 mi1.02 mi9596+1637108+1177108+1176011(Top 24%)4341(Top 30%)4341(Top 284%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

12218

Males

8819

M55-59

8819

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11452

Males

8526

M55-59

8526

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

12218

Males

8819

M55-59

8819

15K→20K

9.3 - 12.4 mi

Top 50%
×5story building
+106ft-86ft

Overall

12656

Males

8966

M55-59

8966

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12234

Males

8735

M55-59

8735

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

10748

Males

7882

M55-59

7882

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

10868

Males

7721

M55-59

7721

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

8777

Males

6398

M55-59

6398

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

7387

Males

5485

M55-59

5485

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9326

Males

6418

M55-59

6418

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6160

Males

4630

M55-59

4630

23M→24M

23.0 - 24.0 mi

Top 17%
×6story building
+12ft-82ft

Overall

4469

Males

3593

M55-59

3593

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4673

Males

3611

M55-59

3611

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

3774

Males

3033

M55-59

3033

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6011

Males

4341

M55-59

4341

Passing Analysis

Category:
Athletes Passed
3867*
Passed By
1091
Net Change
+2776
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12372
5K → 10K585111+474#12372#11898
10K → 15K201289-88#11898#11986
15K → 20K190323-133#11986#12119
20K → Half28280#12119#12119
Half → 25K39971+328#12119#11791
25K → 30K409183+226#11791#11565
30K → 20M30931+278#11565#11287
20M → 21M3647+357#11287#10930
21M → 35K12629+97#10930#10833
35K → 23M3534+349#10833#10484
23M → 24M3321+331#10484#10153
24M → 40K240*1+239#10153#9914
40K → 25.2M1561+155#9914#9759
25.2M → Finish17512+163#9759#9596
TOTALS3867*1091+2776

* 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