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BOSTON MARATHON 2026

Yongsung Lim

Bib: 24870•M

NC

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M70-74)
#0 / 281
Top 23%
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
25:43
3.11 mi
Rank: #18724
Start → 5K
25:43 | 8:17/mi
10K
51:52
6.21 mi
Rank: #19305 (-581)
5K → 10K
26:09 | 8:26/mi
15K
1:18:41
9.32 mi
Rank: #19798 (-493)
10K → 15K
26:49 | 8:38/mi
20K
1:46:19
12.43 mi
Rank: #20216 (-418)
15K → 20K
27:38 | 8:54/mi
HALF
1:52:16
13.11 mi
Rank: #20277 (-61)
20K → HALF
5:57 | 8:44/mi
25K
2:14:32
15.53 mi
Rank: #20616 (-339)
HALF → 25K
22:16 | 9:11/mi
30K
2:45:00
18.64 mi
Rank: #21068 (-452)
25K → 30K
30:28 | 9:49/mi
20M
2:58:33
20.00 mi
Rank: #21215 (-147)
30K → 20M
13:33 | 9:59/mi
21M
3:09:12
21.00 mi
Rank: #21324 (-109)
20M → 21M
10:39 | 10:39/mi
35K
3:16:17
21.75 mi
Rank: #21351 (-27)
21M → 35K
7:05 | 9:29/mi
23M
3:28:49
23.00 mi
Rank: #21427 (-76)
35K → 23M
12:32 | 10:01/mi
24M
3:38:47
24.00 mi
Rank: #21529 (-102)
23M → 24M
9:58 | 9:58/mi
40K
3:47:27
24.85 mi
Rank: #21597 (-68)
24M → 40K
8:40 | 10:09/mi
25.2M
3:51:08
25.20 mi
Rank: #21614 (-17)
40K → 25.2M
3:41 | 10:41/mi
FINISH
4:01:01
26.22 mi
Rank: #21715 (-101)
25.2M → FINISH
9:53 | 9:42/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:52:16
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time2:08:45
Pace9:50 /mi
📊Positive Split: 14.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:30:5825:438:1725:43
8:17
-
10K
6.21 mi11:57:0751:528:2126:09
8:26
+0:09
15K
9.32 mi12:23:561:18:418:2726:49
8:38
+0:12
20K
12.43 mi12:51:341:46:198:3427:38
8:54
+0:16
HALF
13.11 mi12:57:311:52:168:345:57
8:44
-0:10
25K
15.53 mi13:19:472:14:328:4022:16
9:11
+0:27
30K
18.64 mi13:50:152:45:008:5230:28
9:49
+0:38
20M
20.00 mi14:03:482:58:338:5613:33
9:59
+0:10
21M
21.00 mi14:14:273:09:129:0110:39
10:39
+0:40
35K
21.75 mi14:21:323:16:179:027:05
9:29
-1:10
23M
23.00 mi14:34:043:28:499:0512:32
10:01
+0:32
24M
24.00 mi14:44:023:38:479:079:58
9:58
-0:03
40K
24.85 mi14:52:423:47:279:108:40
10:09
+0:11
25.2M
25.20 mi14:56:233:51:089:113:41
10:41
+0:32
FINISH
26.22 mi15:06:164:01:019:129:53
9:42
-0:59

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:17 /mi

Average Pace

9:12 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:14:32

56% of race

Time at Steady Pace

1:23:29

35% of race

Time at Slower Pace

23:00

10% of race

Average Pace: 9:12 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:30:5825:438:1725:43
8:17
#18724
10K
6.21 mi11:57:0751:528:2126:09
8:26
#19305
15K
9.32 mi12:23:561:18:418:2726:49
8:38
#19798
20K
12.43 mi12:51:341:46:198:3427:38
8:54
#20216
HALF
13.11 mi12:57:311:52:168:345:57
8:44
#20277
25K
15.53 mi13:19:472:14:328:4022:16
9:11
#20616
30K
18.64 mi13:50:152:45:008:5230:28
9:49
#21068
20M
20.00 mi14:03:482:58:338:5613:33
9:59
#21215
21M
21.00 mi14:14:273:09:129:0110:39
10:39
#21324
35K
21.75 mi14:21:323:16:179:027:05
9:29
#21351
23M
23.00 mi14:34:043:28:499:0512:32
10:01
#21427
24M
24.00 mi14:44:023:38:479:079:58
9:58
#21529
40K
24.85 mi14:52:423:47:279:108:40
10:09
#21597
25.2M
25.20 mi14:56:233:51:089:113:41
10:41
#21614
FINISH
26.22 mi15:06:164:01:019:129:53
9:42
#21715
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi18724117291172920829(Top 72%)12723(Top 78%)12723(Top 4528%)
10K6.21 mi3.10 mi19305-58111986-25711986-25719879(Top 68%)12267(Top 75%)12267(Top 4365%)
15K9.32 mi3.11 mi19798-49312213-22712213-22720829(Top 72%)12723(Top 78%)12723(Top 4528%)
20K12.43 mi3.11 mi20216-41812389-17612389-17621433(Top 74%)12972(Top 79%)12972(Top 4616%)
HALF13.11 mi0.68 mi20277-6112416-2712416-2721437(Top 74%)13006(Top 80%)13006(Top 4628%)
25K15.53 mi2.42 mi20616-33912567-15112567-15121953(Top 76%)13208(Top 81%)13208(Top 4700%)
30K18.64 mi3.11 mi21068-45212762-19512762-19522583(Top 78%)13422(Top 82%)13422(Top 4777%)
20M20.00 mi1.36 mi21215-14712822-6012822-6022498(Top 78%)13303(Top 81%)13303(Top 4734%)
21M21.00 mi1.00 mi21324-10912874-5212874-5222298(Top 77%)13166(Top 81%)13166(Top 4685%)
35K21.75 mi0.75 mi21351-2712875-112875-121658(Top 75%)12801(Top 78%)12801(Top 4556%)
23M23.00 mi1.25 mi21427-7612912-3712912-3722167(Top 76%)12995(Top 80%)12995(Top 4625%)
24M24.00 mi1.00 mi21529-10212943-3112943-3122687(Top 78%)13220(Top 81%)13220(Top 4705%)
40K24.85 mi0.85 mi21597-6812964-2112964-2122295(Top 77%)12962(Top 79%)12962(Top 4613%)
25.2M25.20 mi0.35 mi21614-1712966-212966-221570(Top 74%)12628(Top 77%)12628(Top 4494%)
FINISH26.22 mi1.02 mi21715-10113007-4113007-4122952(Top 79%)13286(Top 81%)13286(Top 4728%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21
+97ft-345ft

Overall

20829

Males

12723

M70-74

12723

5K→10K

3.1 - 6.2 mi

Top 68%
×5
+79ft-138ft

Overall

19879

Males

12267

M70-74

12267

10K→15K

6.2 - 9.3 mi

Top 72%
×3
+67ft-78ft

Overall

20829

Males

12723

M70-74

12723

15K→20K

9.3 - 12.4 mi

Top 74%
×5
+106ft-86ft

Overall

21433

Males

12972

M70-74

12972

20K→HALF

12.4 - 13.1 mi

Top 74%
×2
+19ft-37ft

Overall

21437

Males

13006

M70-74

13006

HALF→25K

13.1 - 15.5 mi

Top 76%
×4
+66ft-88ft

Overall

21953

Males

13208

M70-74

13208

25K→30K

15.5 - 18.6 mi

Top 78%
×9
+181ft-148ft

Overall

22583

Males

13422

M70-74

13422

30K→20M

18.6 - 20.0 mi

Top 78%
×5
+64ft-50ft

Overall

22498

Males

13303

M70-74

13303

20M→21M

20.0 - 21.0 mi

Top 77%
×8
+106ft-24ft

Overall

22298

Males

13166

M70-74

13166

21M→35K

21.0 - 21.8 mi

Top 75%
×7
+17ft-86ft

Overall

21658

Males

12801

M70-74

12801

35K→23M

21.8 - 23.0 mi

Top 76%
×5
+23ft-63ft

Overall

22167

Males

12995

M70-74

12995

23M→24M

23.0 - 24.0 mi

Top 78%
×6
+12ft-82ft

Overall

22687

Males

13220

M70-74

13220

24M→40K

24.0 - 24.9 mi

Top 77%
×1
+6ft-20ft

Overall

22295

Males

12962

M70-74

12962

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1
+13ft-16ft

Overall

21570

Males

12628

M70-74

12628

25.2M→FINISH

25.2 - 26.2 mi

Top 79%
×2
+22ft-21ft

Overall

22952

Males

13286

M70-74

13286

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
630
Passed By
3621
Net Change
-2991
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18724
5K → 10K85666-581#18724#19305
10K → 15K50543-493#19305#19798
15K → 20K68486-418#19798#20216
20K → HALF1879-61#20216#20277
HALF → 25K58397-339#20277#20616
25K → 30K59511-452#20616#21068
30K → 20M63210-147#21068#21215
20M → 21M36145-109#21215#21324
21M → 35K4471-27#21324#21351
35K → 23M52128-76#21351#21427
23M → 24M25127-102#21427#21529
24M → 40K37105-68#21529#21597
40K → 25.2M1532-17#21597#21614
25.2M → FINISH20121-101#21614#21715
TOTALS6303621-2991
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing