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BOSTON MARATHON 2025

Su Guan Lim

Bib: 28476•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:04
Rank: #26338
Start → 5K
32:04 | 10:19/mi
10K· 6.21 mi
1:03:36
Rank: #25979 (+359)
5K → 10K
31:32 | 10:09/mi
15K· 9.32 mi
1:34:57
Rank: #25690 (+289)
10K → 15K
31:21 | 10:05/mi
20K· 12.43 mi
2:06:40
Rank: #25418 (+272)
15K → 20K
31:43 | 10:13/mi
Half· 13.11 mi
2:13:38
Rank: #25404 (+14)
20K → Half
6:58 | 10:13/mi
25K· 15.53 mi
2:39:12
Rank: #25222 (+182)
Half → 25K
25:34 | 10:33/mi
30K· 18.64 mi
3:12:50
Rank: #24964 (+258)
25K → 30K
33:38 | 10:50/mi
20M
3:27:35
Rank: #24849 (+115)
30K → 20M
14:45 | 10:51/mi
21M
3:38:37
Rank: #24693 (+156)
20M → 21M
11:02 | 11:02/mi
35K· 21.75 mi
3:46:31
Rank: #24657 (+36)
21M → 35K
7:54 | 10:34/mi
23M
4:00:05
Rank: #24573 (+84)
35K → 23M
13:34 | 10:50/mi
24M
4:10:48
Rank: #24525 (+48)
23M → 24M
10:43 | 10:43/mi
40K· 24.85 mi
4:20:00
Rank: #24461 (+64)
24M → 40K
9:12 | 10:46/mi
25.2M
4:23:57
Rank: #24427 (+34)
40K → 25.2M
3:57 | 11:27/mi
Finish· 26.22 mi
4:33:42
Rank: #24344 (+83)
25.2M → Finish
9:45 | 9:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:38
Pace10:12 /mi
2nd Half
Distance13.11 mi
Time2:20:04
Pace10:41 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:5432:0410:1932:04
10:19
-
10K
6.21 mi12:24:261:03:3610:1431:32
10:09
-0:10
15K
9.32 mi12:55:471:34:5710:1131:21
10:05
-0:04
20K
12.43 mi13:27:302:06:4010:1231:43
10:13
+0:08
Half
13.11 mi13:34:282:13:3810:126:58
10:13
0:00
25K
15.53 mi14:00:022:39:1210:1525:34
10:33
+0:20
30K
18.64 mi14:33:403:12:5010:2133:38
10:50
+0:17
20M
20.00 mi14:48:253:27:3510:2314:45
10:51
+0:01
21M
21.00 mi14:59:273:38:3710:2511:02
11:02
+0:11
35K
21.75 mi15:07:213:46:3110:257:54
10:34
-0:28
23M
23.00 mi15:20:554:00:0510:2613:34
10:50
+0:16
24M
24.00 mi15:31:384:10:4810:2710:43
10:43
-0:07
40K
24.85 mi15:40:504:20:0010:289:12
10:46
+0:03
25.2M
25.20 mi15:44:474:23:5710:283:57
11:27
+0:41
Finish
26.22 mi15:54:324:33:4210:279:45
9:34
-1:53

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

9:34 /mi

Average Pace

10:27 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:23

52% of race

Time at Steady Pace

2:06:22

46% of race

Time at Slower Pace

3:57

1% of race

Average Pace: 10:26 /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 mi11:52:5432:0410:1932:04
10:19
#26338
10K
6.21 mi12:24:261:03:3610:1431:32
10:09
#25979
15K
9.32 mi12:55:471:34:5710:1131:21
10:05
#25690
20K
12.43 mi13:27:302:06:4010:1231:43
10:13
#25418
Half
13.11 mi13:34:282:13:3810:126:58
10:13
#25404
25K
15.53 mi14:00:022:39:1210:1525:34
10:33
#25222
30K
18.64 mi14:33:403:12:5010:2133:38
10:50
#24964
20M
20.00 mi14:48:253:27:3510:2314:45
10:51
#24849
21M
21.00 mi14:59:273:38:3710:2511:02
11:02
#24693
35K
21.75 mi15:07:213:46:3110:257:54
10:34
#24657
23M
23.00 mi15:20:554:00:0510:2613:34
10:50
#24573
24M
24.00 mi15:31:384:10:4810:2710:43
10:43
#24525
40K
24.85 mi15:40:504:20:0010:289:12
10:46
#24461
25.2M
25.20 mi15:44:474:23:5710:283:57
11:27
#24427
Finish
26.22 mi15:54:324:33:4210:279:45
9:34
#24344
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi26338153291532925183(Top 89%)14791(Top 92%)14791(Top 620%)
10K6.21 mi3.10 mi25979+35915149+18015149+18025621(Top 90%)14966(Top 93%)14966(Top 627%)
15K9.32 mi3.11 mi25690+28915013+13615013+13625183(Top 89%)14791(Top 92%)14791(Top 620%)
20K12.43 mi3.11 mi25418+27214886+12714886+12724661(Top 87%)14516(Top 90%)14516(Top 608%)
Half13.11 mi0.68 mi25404+1414883+314883+325264(Top 89%)14782(Top 92%)14782(Top 620%)
25K15.53 mi2.42 mi25222+18214786+9714786+9724452(Top 86%)14399(Top 89%)14399(Top 603%)
30K18.64 mi3.11 mi24964+25814640+14614640+14623667(Top 83%)13919(Top 86%)13919(Top 583%)
20M20.00 mi1.36 mi24849+11514572+6814572+6823284(Top 82%)13656(Top 85%)13656(Top 572%)
21M21.00 mi1.00 mi24693+15614494+7814494+7821494(Top 76%)12741(Top 79%)12741(Top 534%)
35K21.75 mi0.75 mi24657+3614469+2514469+2523293(Top 82%)13531(Top 84%)13531(Top 567%)
23M23.00 mi1.25 mi24573+8414408+6114408+6122831(Top 80%)13265(Top 82%)13265(Top 556%)
24M24.00 mi1.00 mi24525+4814377+3114377+3123357(Top 82%)13495(Top 84%)13495(Top 566%)
40K24.85 mi0.85 mi24461+6414339+3814339+3822591(Top 80%)13041(Top 81%)13041(Top 547%)
25.2M25.20 mi0.35 mi24427+3414325+1414325+1421933(Top 77%)12764(Top 79%)12764(Top 535%)
Finish26.22 mi1.02 mi24344+8314263+6214263+6221432(Top 75%)12506(Top 78%)12506(Top 524%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21stories
+97ft-345ft

Overall

25183

Males

14791

M45-49

14791

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

25621

Males

14966

M45-49

14966

10K→15K

6.2 - 9.3 mi

Top 89%
×3stories
+67ft-78ft

Overall

25183

Males

14791

M45-49

14791

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

24661

Males

14516

M45-49

14516

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

25264

Males

14782

M45-49

14782

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

24452

Males

14399

M45-49

14399

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

23667

Males

13919

M45-49

13919

30K→20M

18.6 - 20.0 mi

Top 82%
×5stories
+64ft-50ft

Overall

23284

Males

13656

M45-49

13656

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21494

Males

12741

M45-49

12741

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

23293

Males

13531

M45-49

13531

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22831

Males

13265

M45-49

13265

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23357

Males

13495

M45-49

13495

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22591

Males

13041

M45-49

13041

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21933

Males

12764

M45-49

12764

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

21432

Males

12506

M45-49

12506

Passing Analysis

Category:
Athletes Passed
2214
Passed By
220
Net Change
+1994
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26338
5K → 10K40748+359#26338#25979
10K → 15K31122+289#25979#25690
15K → 20K28715+272#25690#25418
20K → Half2511+14#25418#25404
Half → 25K20624+182#25404#25222
25K → 30K27820+258#25222#24964
30K → 20M1249+115#24964#24849
20M → 21M1582+156#24849#24693
21M → 35K5115+36#24693#24657
35K → 23M10218+84#24657#24573
23M → 24M6618+48#24573#24525
24M → 40K728+64#24525#24461
40K → 25.2M373+34#24461#24427
25.2M → Finish907+83#24427#24344
TOTALS2214220+1994
📊

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