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BOSTON MARATHON 2025

Liam Klaiman

Bib: 3688•M

IL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Division (M18-39)
#0 / 5642
Top 16%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:01
Rank: #1480
Start → 5K
19:01 | 6:07/mi
10K· 6.21 mi
37:52
Rank: #1402 (+78)
5K → 10K
18:51 | 6:04/mi
15K· 9.32 mi
56:52
Rank: #1401 (+1)
10K → 15K
19:00 | 6:07/mi
20K· 12.43 mi
1:16:37
Rank: #1593 (-192)
15K → 20K
19:45 | 6:21/mi
Half· 13.11 mi
1:20:45
Rank: #1578 (+15)
20K → Half
4:08 | 6:03/mi
25K· 15.53 mi
1:35:38
Rank: #1492 (+86)
Half → 25K
14:53 | 6:08/mi
30K· 18.64 mi
1:55:07
Rank: #1385 (+107)
25K → 30K
19:29 | 6:16/mi
20M
2:03:37
Rank: #1318 (+67)
30K → 20M
8:30 | 6:15/mi
21M
2:10:15
Rank: #1278 (+40)
20M → 21M
6:38 | 6:38/mi
35K· 21.75 mi
2:14:47
Rank: #1238 (+40)
21M → 35K
4:32 | 6:04/mi
23M
2:22:40
Rank: #1181 (+57)
35K → 23M
7:53 | 6:18/mi
24M
2:28:52
Rank: #1154 (+27)
23M → 24M
6:12 | 6:12/mi
40K· 24.85 mi
2:34:23
Rank: #1143 (+11)
24M → 40K
5:31 | 6:27/mi
25.2M
2:36:49
Rank: #1143
40K → 25.2M
2:26 | 7:03/mi
Finish· 26.22 mi
2:43:07
Rank: #1130 (+13)
25.2M → Finish
6:18 | 6:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:45
Pace6:10 /mi
2nd Half
Distance13.11 mi
Time1:22:22
Pace6:17 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0219:016:0719:01
6:07
-
10K
6.21 mi10:40:5337:526:0618:51
6:04
-0:03
15K
9.32 mi10:59:5356:526:0619:00
6:07
+0:03
20K
12.43 mi11:19:381:16:376:1019:45
6:21
+0:14
Half
13.11 mi11:23:461:20:456:104:08
6:03
-0:18
25K
15.53 mi11:38:391:35:386:0914:53
6:08
+0:05
30K
18.64 mi11:58:081:55:076:1119:29
6:16
+0:08
20M
20.00 mi12:06:382:03:376:118:30
6:15
-0:01
21M
21.00 mi12:13:162:10:156:126:38
6:38
+0:23
35K
21.75 mi12:17:482:14:476:124:32
6:04
-0:34
23M
23.00 mi12:25:412:22:406:127:53
6:18
+0:14
24M
24.00 mi12:31:532:28:526:126:12
6:12
-0:06
40K
24.85 mi12:37:242:34:236:135:31
6:27
+0:15
25.2M
25.20 mi12:39:502:36:496:132:26
7:03
+0:36
Finish
26.22 mi12:46:082:43:076:146:18
6:11
-0:52

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

6:03 /mi

Average Pace

6:14 /mi

Slowest Pace

7:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:41

99% of race

Time at Steady Pace

2:26

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:13 /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 mi10:22:0219:016:0719:01
6:07
#1480
10K
6.21 mi10:40:5337:526:0618:51
6:04
#1402
15K
9.32 mi10:59:5356:526:0619:00
6:07
#1401
20K
12.43 mi11:19:381:16:376:1019:45
6:21
#1593
Half
13.11 mi11:23:461:20:456:104:08
6:03
#1578
25K
15.53 mi11:38:391:35:386:0914:53
6:08
#1492
30K
18.64 mi11:58:081:55:076:1119:29
6:16
#1385
20M
20.00 mi12:06:382:03:376:118:30
6:15
#1318
21M
21.00 mi12:13:162:10:156:126:38
6:38
#1278
35K
21.75 mi12:17:482:14:476:124:32
6:04
#1238
23M
23.00 mi12:25:412:22:406:127:53
6:18
#1181
24M
24.00 mi12:31:532:28:526:126:12
6:12
#1154
40K
24.85 mi12:37:242:34:236:135:31
6:27
#1143
25.2M
25.20 mi12:39:502:36:496:132:26
7:03
#1143
Finish
26.22 mi12:46:082:43:076:146:18
6:11
#1130
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1480141014101452(Top 5%)1381(Top 9%)1381(Top 24%)
10K6.21 mi3.10 mi1402+781333+771333+771347(Top 5%)1277(Top 8%)1277(Top 23%)
15K9.32 mi3.11 mi1401+11330+31330+31452(Top 5%)1381(Top 9%)1381(Top 24%)
20K12.43 mi3.11 mi1593-1921511-1811511-1812290(Top 8%)2183(Top 14%)2183(Top 39%)
Half13.11 mi0.68 mi1578+151498+131498+131355(Top 5%)1287(Top 8%)1287(Top 23%)
25K15.53 mi2.42 mi1492+861413+851413+851237(Top 4%)1170(Top 7%)1170(Top 21%)
30K18.64 mi3.11 mi1385+1071309+1041309+1041121(Top 4%)1055(Top 7%)1055(Top 19%)
20M20.00 mi1.36 mi1318+671243+661243+66863(Top 3%)815(Top 5%)815(Top 14%)
21M21.00 mi1.00 mi1278+401205+381205+381005(Top 4%)950(Top 6%)950(Top 17%)
35K21.75 mi0.75 mi1238+401167+381167+38855(Top 3%)800(Top 5%)800(Top 14%)
23M23.00 mi1.25 mi1181+571112+551112+55873(Top 3%)824(Top 5%)824(Top 15%)
24M24.00 mi1.00 mi1154+271088+241088+241018(Top 4%)957(Top 6%)957(Top 17%)
40K24.85 mi0.85 mi1143+111076+121076+121425(Top 5%)1319(Top 8%)1319(Top 23%)
25.2M25.20 mi0.35 mi1143107610761606(Top 6%)1463(Top 9%)1463(Top 26%)
Finish26.22 mi1.02 mi1130+131065+111065+111455(Top 5%)1353(Top 8%)1353(Top 24%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1452

Males

1381

M18-39

1381

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1347

Males

1277

M18-39

1277

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1452

Males

1381

M18-39

1381

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2290

Males

2183

M18-39

2183

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1355

Males

1287

M18-39

1287

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1237

Males

1170

M18-39

1170

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1121

Males

1055

M18-39

1055

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

863

Males

815

M18-39

815

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1005

Males

950

M18-39

950

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

855

Males

800

M18-39

800

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

873

Males

824

M18-39

824

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1018

Males

957

M18-39

957

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1425

Males

1319

M18-39

1319

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1606

Males

1463

M18-39

1463

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1455

Males

1353

M18-39

1353

Passing Analysis

Category:
Athletes Passed
722
Passed By
372
Net Change
+350
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1480
5K → 10K11335+78#1480#1402
10K → 15K4847+1#1402#1401
15K → 20K17209-192#1401#1593
20K → Half194+15#1593#1578
Half → 25K904+86#1578#1492
25K → 30K11710+107#1492#1385
30K → 20M714+67#1385#1318
20M → 21M466+40#1318#1278
21M → 35K422+40#1278#1238
35K → 23M625+57#1238#1181
23M → 24M4215+27#1181#1154
24M → 40K2110+11#1154#1143
40K → 25.2M550#1143#1143
25.2M → Finish2916+13#1143#1130
TOTALS722372+350
📊

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