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BOSTON MARATHON 2025

Vincent Lo

Bib: 9979•M

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 29%
Gender (Male)
#0 / 16105
Top 43%
Masters (Masters Men)
#0 / 10463
Top 30%
Division (M45-49)
#0 / 2386
Top 43%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:15
Rank: #6633
Start → 5K
21:15 | 6:50/mi
10K· 6.21 mi
41:48
Rank: #5646 (+987)
5K → 10K
20:33 | 6:37/mi
15K· 9.32 mi
1:02:28
Rank: #5278 (+368)
10K → 15K
20:40 | 6:39/mi
20K· 12.43 mi
1:23:32
Rank: #5185 (+93)
15K → 20K
21:04 | 6:47/mi
Half· 13.11 mi
1:28:06
Rank: #5175 (+10)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:54
Rank: #5298 (-123)
Half → 25K
16:48 | 6:56/mi
30K· 18.64 mi
2:09:31
Rank: #6314 (-1016)
25K → 30K
24:37 | 7:55/mi
20M
2:19:57
Rank: #6375 (-61)
30K → 20M
10:26 | 7:41/mi
21M
2:28:53
Rank: #6637 (-262)
20M → 21M
8:56 | 8:56/mi
35K· 21.75 mi
2:34:38
Rank: #6691 (-54)
21M → 35K
5:45 | 7:41/mi
23M
2:45:23
Rank: #7046 (-355)
35K → 23M
10:45 | 8:35/mi
24M
2:53:50
Rank: #7298 (-252)
23M → 24M
8:27 | 8:27/mi
40K· 24.85 mi
3:01:44
Rank: #7680 (-382)
24M → 40K
7:54 | 9:14/mi
25.2M
3:05:16
Rank: #7858 (-178)
40K → 25.2M
3:32 | 10:15/mi
Finish· 26.22 mi
3:14:25
Rank: #8369 (-511)
25.2M → Finish
9:09 | 8:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:06
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:46:19
Pace8:07 /mi
📊Positive Split: 20.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2221:156:5021:15
6:50
-
10K
6.21 mi11:07:5541:486:4420:33
6:37
-0:13
15K
9.32 mi11:28:351:02:286:4220:40
6:39
+0:02
20K
12.43 mi11:49:391:23:326:4321:04
6:47
+0:08
Half
13.11 mi11:54:131:28:066:434:34
6:42
-0:05
25K
15.53 mi12:11:011:44:546:4516:48
6:56
+0:14
30K
18.64 mi12:35:382:09:316:5724:37
7:55
+0:59
20M
20.00 mi12:46:042:19:577:0010:26
7:41
-0:14
21M
21.00 mi12:55:002:28:537:058:56
8:56
+1:15
35K
21.75 mi13:00:452:34:387:075:45
7:41
-1:15
23M
23.00 mi13:11:302:45:237:1110:45
8:35
+0:54
24M
24.00 mi13:19:572:53:507:158:27
8:27
-0:08
40K
24.85 mi13:27:513:01:447:197:54
9:14
+0:47
25.2M
25.20 mi13:31:233:05:167:213:32
10:15
+1:01
Finish
26.22 mi13:40:323:14:257:259:09
8:59
-1:16

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

6:37 /mi

Average Pace

7:25 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:54

54% of race

Time at Steady Pace

40:48

21% of race

Time at Slower Pace

48:43

25% of race

Average Pace: 7:25 /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 mi10:47:2221:156:5021:15
6:50
#6633
10K
6.21 mi11:07:5541:486:4420:33
6:37
#5646
15K
9.32 mi11:28:351:02:286:4220:40
6:39
#5278
20K
12.43 mi11:49:391:23:326:4321:04
6:47
#5185
Half
13.11 mi11:54:131:28:066:434:34
6:42
#5175
25K
15.53 mi12:11:011:44:546:4516:48
6:56
#5298
30K
18.64 mi12:35:382:09:316:5724:37
7:55
#6314
20M
20.00 mi12:46:042:19:577:0010:26
7:41
#6375
21M
21.00 mi12:55:002:28:537:058:56
8:56
#6637
35K
21.75 mi13:00:452:34:387:075:45
7:41
#6691
23M
23.00 mi13:11:302:45:237:1110:45
8:35
#7046
24M
24.00 mi13:19:572:53:507:158:27
8:27
#7298
40K
24.85 mi13:27:513:01:447:197:54
9:14
#7680
25.2M
25.20 mi13:31:233:05:167:213:32
10:15
#7858
Finish
26.22 mi13:40:323:14:257:259:09
8:59
#8369
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi6633602260224679(Top 16%)4380(Top 27%)4380(Top 184%)
10K6.21 mi3.10 mi5646+9875218+8045218+8044595(Top 16%)4305(Top 27%)4305(Top 180%)
15K9.32 mi3.11 mi5278+3684897+3214897+3214679(Top 16%)4380(Top 27%)4380(Top 184%)
20K12.43 mi3.11 mi5185+934805+924805+925124(Top 18%)4726(Top 29%)4726(Top 198%)
Half13.11 mi0.68 mi5175+104802+34802+35276(Top 19%)4871(Top 30%)4871(Top 204%)
25K15.53 mi2.42 mi5298-1234889-874889-875861(Top 21%)5287(Top 33%)5287(Top 222%)
30K18.64 mi3.11 mi6314-10165684-7955684-79510802(Top 38%)8084(Top 50%)8084(Top 339%)
20M20.00 mi1.36 mi6375-615721-375721-378188(Top 29%)6556(Top 41%)6556(Top 275%)
21M21.00 mi1.00 mi6637-2625893-1725893-17213081(Top 46%)8873(Top 55%)8873(Top 372%)
35K21.75 mi0.75 mi6691-545916-235916-239906(Top 35%)7306(Top 45%)7306(Top 306%)
23M23.00 mi1.25 mi7046-3556127-2116127-21113809(Top 49%)9064(Top 56%)9064(Top 380%)
24M24.00 mi1.00 mi7298-2526259-1326259-13214165(Top 50%)9207(Top 57%)9207(Top 386%)
40K24.85 mi0.85 mi7680-3826470-2116470-21117502(Top 62%)10590(Top 66%)10590(Top 444%)
25.2M25.20 mi0.35 mi7858-1786574-1046574-10417988(Top 63%)10788(Top 67%)10788(Top 452%)
Finish26.22 mi1.02 mi8369-5116854-2806854-28018894(Top 67%)11294(Top 70%)11294(Top 473%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4679

Males

4380

M45-49

4380

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4595

Males

4305

M45-49

4305

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4679

Males

4380

M45-49

4380

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

5124

Males

4726

M45-49

4726

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5276

Males

4871

M45-49

4871

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5861

Males

5287

M45-49

5287

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10802

Males

8084

M45-49

8084

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

8188

Males

6556

M45-49

6556

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

13081

Males

8873

M45-49

8873

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9906

Males

7306

M45-49

7306

35K→23M

21.8 - 23.0 mi

Top 49%
×5stories
+23ft-63ft

Overall

13809

Males

9064

M45-49

9064

23M→24M

23.0 - 24.0 mi

Top 50%
×6stories
+12ft-82ft

Overall

14165

Males

9207

M45-49

9207

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17502

Males

10590

M45-49

10590

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17988

Males

10788

M45-49

10788

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

18894

Males

11294

M45-49

11294

Passing Analysis

Category:
Athletes Passed
1902
Passed By
3638
Net Change
-1736
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6633
5K → 10K9958+987#6633#5646
10K → 15K38214+368#5646#5278
15K → 20K17380+93#5278#5185
20K → Half3626+10#5185#5175
Half → 25K75198-123#5175#5298
25K → 30K331049-1016#5298#6314
30K → 20M69130-61#6314#6375
20M → 21M17279-262#6375#6637
21M → 35K3488-54#6637#6691
35K → 23M35390-355#6691#7046
23M → 24M23275-252#7046#7298
24M → 40K17399-382#7298#7680
40K → 25.2M5183-178#7680#7858
25.2M → Finish8519-511#7858#8369
TOTALS19023638-1736
📊

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