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BOSTON MARATHON 2025

Brian Suh

Bib: 4912•M

TN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 14%
Gender (Male)
#0 / 16105
Top 23%
Division (M18-39)
#0 / 5642
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:48
Rank: #2912
Start → 5K
6:22/mi
19:48 split
10K· 6.21 mi
39:41
Rank: #2958 (-46)
5K → 10K
6:24/mi
19:53 split
15K· 9.32 mi
59:46
Rank: #3092 (-134)
10K → 15K
6:28/mi
20:05 split
20K· 12.43 mi
1:20:02
Rank: #3109 (-17)
15K → 20K
6:31/mi
20:16 split
Half· 13.11 mi
1:24:24
Rank: #3104 (+5)
20K → Half
6:24/mi
4:22 split
25K· 15.53 mi
1:40:29
Rank: #3182 (-78)
Half → 25K
6:38/mi
16:05 split
30K· 18.64 mi
2:02:11
Rank: #3355 (-173)
25K → 30K
6:59/mi
21:42 split
20M
2:12:00
Rank: #3478 (-123)
30K → 20M
7:13/mi
9:49 split
21M
2:19:55
Rank: #3628 (-150)
20M → 21M
7:55/mi
7:55 split
35K· 21.75 mi
2:25:25
Rank: #3736 (-108)
21M → 35K
7:21/mi
5:30 split
23M
2:34:34
Rank: #3811 (-75)
35K → 23M
7:18/mi
9:09 split
24M
2:41:46
Rank: #3893 (-82)
23M → 24M
7:12/mi
7:12 split
40K· 24.85 mi
2:48:08
Rank: #3968 (-75)
24M → 40K
7:27/mi
6:22 split
25.2M
2:50:50
Rank: #3976 (-8)
40K → 25.2M
7:50/mi
2:42 split
Finish· 26.22 mi
2:57:51
Rank: #3992 (-16)
25.2M → Finish
6:53/mi
7:01 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:24
Pace6:26 /mi
2nd Half
Distance13.11 mi
Time1:33:27
Pace7:08 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0119:486:2219:48
6:22
-
10K
6.21 mi10:42:5439:416:2319:53
6:24
+0:02
15K
9.32 mi11:02:5959:466:2520:05
6:28
+0:04
20K
12.43 mi11:23:151:20:026:2620:16
6:31
+0:03
Half
13.11 mi11:27:371:24:246:264:22
6:24
-0:07
25K
15.53 mi11:43:421:40:296:2816:05
6:38
+0:14
30K
18.64 mi12:05:242:02:116:3321:42
6:59
+0:21
20M
20.00 mi12:15:132:12:006:369:49
7:13
+0:14
21M
21.00 mi12:23:082:19:556:407:55
7:55
+0:42
35K
21.75 mi12:28:382:25:256:415:30
7:21
-0:34
23M
23.00 mi12:37:472:34:346:439:09
7:18
-0:03
24M
24.00 mi12:44:592:41:466:447:12
7:12
-0:06
40K
24.85 mi12:51:212:48:086:466:22
7:27
+0:15
25.2M
25.20 mi12:54:032:50:506:472:42
7:50
+0:23
Finish
26.22 mi13:01:042:57:516:477:01
6:53
-0:57

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

6:22 /mi

Average Pace

6:47 /mi

Slowest Pace

7:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:29

56% of race

Time at Steady Pace

45:44

26% of race

Time at Slower Pace

31:38

18% of race

Average Pace: 6:47 /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 mi10:23:0119:486:2219:48
6:22
#2912
10K
6.21 mi10:42:5439:416:2319:53
6:24
#2958
15K
9.32 mi11:02:5959:466:2520:05
6:28
#3092
20K
12.43 mi11:23:151:20:026:2620:16
6:31
#3109
Half
13.11 mi11:27:371:24:246:264:22
6:24
#3104
25K
15.53 mi11:43:421:40:296:2816:05
6:38
#3182
30K
18.64 mi12:05:242:02:116:3321:42
6:59
#3355
20M
20.00 mi12:15:132:12:006:369:49
7:13
#3478
21M
21.00 mi12:23:082:19:556:407:55
7:55
#3628
35K
21.75 mi12:28:382:25:256:415:30
7:21
#3736
23M
23.00 mi12:37:472:34:346:439:09
7:18
#3811
24M
24.00 mi12:44:592:41:466:447:12
7:12
#3893
40K
24.85 mi12:51:212:48:086:466:22
7:27
#3968
25.2M
25.20 mi12:54:032:50:506:472:42
7:50
#3976
Finish
26.22 mi13:01:042:57:516:477:01
6:53
#3992
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2912277127713328(Top 12%)3158(Top 20%)3158(Top 56%)
10K6.21 mi3.10 mi2958-462813-422813-423040(Top 11%)2894(Top 18%)2894(Top 51%)
15K9.32 mi3.11 mi3092-1342945-1322945-1323328(Top 12%)3158(Top 20%)3158(Top 56%)
20K12.43 mi3.11 mi3109-172963-182963-183252(Top 11%)3082(Top 19%)3082(Top 55%)
Half13.11 mi0.68 mi3104+52958+52958+53050(Top 11%)2911(Top 18%)2911(Top 52%)
25K15.53 mi2.42 mi3182-783030-723030-723671(Top 13%)3450(Top 21%)3450(Top 61%)
30K18.64 mi3.11 mi3355-1733176-1463176-1464589(Top 16%)4186(Top 26%)4186(Top 74%)
20M20.00 mi1.36 mi3478-1233285-1093285-1095296(Top 19%)4693(Top 29%)4693(Top 83%)
21M21.00 mi1.00 mi3628-1503416-1313416-1316835(Top 24%)5569(Top 35%)5569(Top 99%)
35K21.75 mi0.75 mi3736-1083511-953511-957487(Top 26%)5964(Top 37%)5964(Top 106%)
23M23.00 mi1.25 mi3811-753565-543565-545484(Top 19%)4647(Top 29%)4647(Top 82%)
24M24.00 mi1.00 mi3893-823622-573622-575787(Top 20%)4775(Top 30%)4775(Top 85%)
40K24.85 mi0.85 mi3968-753685-633685-636439(Top 23%)5095(Top 32%)5095(Top 90%)
25.2M25.20 mi0.35 mi3976-83687-23687-24944(Top 17%)4061(Top 25%)4061(Top 72%)
Finish26.22 mi1.02 mi3992-163689-23689-24957(Top 17%)4072(Top 25%)4072(Top 72%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3328

Males

3158

M18-39

3158

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3040

Males

2894

M18-39

2894

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3328

Males

3158

M18-39

3158

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

3252

Males

3082

M18-39

3082

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3050

Males

2911

M18-39

2911

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3671

Males

3450

M18-39

3450

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4589

Males

4186

M18-39

4186

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5296

Males

4693

M18-39

4693

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6835

Males

5569

M18-39

5569

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

7487

Males

5964

M18-39

5964

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5484

Males

4647

M18-39

4647

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5787

Males

4775

M18-39

4775

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6439

Males

5095

M18-39

5095

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4944

Males

4061

M18-39

4061

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4957

Males

4072

M18-39

4072

Passing Analysis

Category:
Athletes Passed
596
Passed By
1676
Net Change
-1080
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2912
5K → 10K114160-46#2912#2958
10K → 15K46180-134#2958#3092
15K → 20K83100-17#3092#3109
20K → Half1712+5#3109#3104
Half → 25K46124-78#3104#3182
25K → 30K66239-173#3182#3355
30K → 20M36159-123#3355#3478
20M → 21M12162-150#3478#3628
21M → 35K13121-108#3628#3736
35K → 23M44119-75#3736#3811
23M → 24M34116-82#3811#3893
24M → 40K25100-75#3893#3968
40K → 25.2M1523-8#3968#3976
25.2M → Finish4561-16#3976#3992
TOTALS5961676-1080
📊

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