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BOSTON MARATHON 2025

Stephen Guo

Bib: 18683•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:52
Rank: #13805
Start → 5K
23:52 | 7:41/mi
10K· 6.21 mi
47:59
Rank: #14082 (-277)
5K → 10K
24:07 | 7:46/mi
15K· 9.32 mi
1:12:47
Rank: #14697 (-615)
10K → 15K
24:48 | 7:59/mi
20K· 12.43 mi
1:39:12
Rank: #15791 (-1094)
15K → 20K
26:25 | 8:30/mi
Half· 13.11 mi
1:45:00
Rank: #15995 (-204)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:07:03
Rank: #16822 (-827)
Half → 25K
22:03 | 9:06/mi
30K· 18.64 mi
2:37:48
Rank: #17880 (-1058)
25K → 30K
30:45 | 9:54/mi
20M
2:51:30
Rank: #18261 (-381)
30K → 20M
13:42 | 10:05/mi
21M
3:02:26
Rank: #18539 (-278)
20M → 21M
10:56 | 10:56/mi
35K· 21.75 mi
3:10:03
Rank: #18760 (-221)
21M → 35K
7:37 | 10:11/mi
23M
3:23:18
Rank: #19094 (-334)
35K → 23M
13:15 | 10:35/mi
24M
3:33:34
Rank: #19290 (-196)
23M → 24M
10:16 | 10:16/mi
40K· 24.85 mi
3:42:18
Rank: #19380 (-90)
24M → 40K
8:44 | 10:13/mi
25.2M
3:46:11
Rank: #19432 (-52)
40K → 25.2M
3:53 | 11:16/mi
Finish· 26.22 mi
3:56:21
Rank: #19626 (-194)
25.2M → Finish
10:10 | 9:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:00
Pace8:01 /mi
2nd Half
Distance13.11 mi
Time2:11:21
Pace10:01 /mi
📊Positive Split: 25.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5923:527:4123:52
7:41
-
10K
6.21 mi11:39:0647:597:4324:07
7:46
+0:05
15K
9.32 mi12:03:541:12:477:4924:48
7:59
+0:13
20K
12.43 mi12:30:191:39:127:5926:25
8:30
+0:31
Half
13.11 mi12:36:071:45:008:015:48
8:30
0:00
25K
15.53 mi12:58:102:07:038:1122:03
9:06
+0:36
30K
18.64 mi13:28:552:37:488:2830:45
9:54
+0:48
20M
20.00 mi13:42:372:51:308:3413:42
10:05
+0:11
21M
21.00 mi13:53:333:02:268:4110:56
10:56
+0:51
35K
21.75 mi14:01:103:10:038:447:37
10:11
-0:45
23M
23.00 mi14:14:253:23:188:5013:15
10:35
+0:24
24M
24.00 mi14:24:413:33:348:5410:16
10:16
-0:19
40K
24.85 mi14:33:253:42:188:578:44
10:13
-0:03
25.2M
25.20 mi14:37:183:46:118:593:53
11:16
+1:03
Finish
26.22 mi14:47:283:56:219:0110:10
9:59
-1:17

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

7:41 /mi

Average Pace

9:01 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:03

54% of race

Time at Steady Pace

1:21:14

34% of race

Time at Slower Pace

28:04

12% of race

Average Pace: 9:01 /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 mi11:14:5923:527:4123:52
7:41
#13805
10K
6.21 mi11:39:0647:597:4324:07
7:46
#14082
15K
9.32 mi12:03:541:12:477:4924:48
7:59
#14697
20K
12.43 mi12:30:191:39:127:5926:25
8:30
#15791
Half
13.11 mi12:36:071:45:008:015:48
8:30
#15995
25K
15.53 mi12:58:102:07:038:1122:03
9:06
#16822
30K
18.64 mi13:28:552:37:488:2830:45
9:54
#17880
20M
20.00 mi13:42:372:51:308:3413:42
10:05
#18261
21M
21.00 mi13:53:333:02:268:4110:56
10:56
#18539
35K
21.75 mi14:01:103:10:038:447:37
10:11
#18760
23M
23.00 mi14:14:253:23:188:5013:15
10:35
#19094
24M
24.00 mi14:24:413:33:348:5410:16
10:16
#19290
40K
24.85 mi14:33:253:42:188:578:44
10:13
#19380
25.2M
25.20 mi14:37:183:46:118:593:53
11:16
#19432
Finish
26.22 mi14:47:283:56:219:0110:10
9:59
#19626
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi138059991999115902(Top 56%)10765(Top 67%)10765(Top 653%)
10K6.21 mi3.10 mi14082-27710057-6610057-6614460(Top 51%)10199(Top 63%)10199(Top 619%)
15K9.32 mi3.11 mi14697-61510286-22910286-22915902(Top 56%)10765(Top 67%)10765(Top 653%)
20K12.43 mi3.11 mi15791-109410710-42410710-42418255(Top 64%)11728(Top 73%)11728(Top 712%)
Half13.11 mi0.68 mi15995-20410802-9210802-9219179(Top 68%)12127(Top 75%)12127(Top 736%)
25K15.53 mi2.42 mi16822-82711115-31311115-31320327(Top 72%)12559(Top 78%)12559(Top 762%)
30K18.64 mi3.11 mi17880-105811495-38011495-38021288(Top 75%)12839(Top 80%)12839(Top 779%)
20M20.00 mi1.36 mi18261-38111647-15211647-15221204(Top 75%)12677(Top 79%)12677(Top 769%)
21M21.00 mi1.00 mi18539-27811743-9611743-9621205(Top 75%)12592(Top 78%)12592(Top 764%)
35K21.75 mi0.75 mi18760-22111822-7911822-7922359(Top 79%)13081(Top 81%)13081(Top 794%)
23M23.00 mi1.25 mi19094-33411941-11911941-11922204(Top 78%)12974(Top 81%)12974(Top 787%)
24M24.00 mi1.00 mi19290-19611995-5411995-5422117(Top 78%)12862(Top 80%)12862(Top 780%)
40K24.85 mi0.85 mi19380-9012015-2012015-2021101(Top 74%)12330(Top 77%)12330(Top 748%)
25.2M25.20 mi0.35 mi19432-5212031-1612031-1621385(Top 75%)12474(Top 77%)12474(Top 757%)
Finish26.22 mi1.02 mi19626-19412092-6112092-6122846(Top 80%)13194(Top 82%)13194(Top 801%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15902

Males

10765

M55-59

10765

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

14460

Males

10199

M55-59

10199

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15902

Males

10765

M55-59

10765

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

18255

Males

11728

M55-59

11728

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19179

Males

12127

M55-59

12127

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

20327

Males

12559

M55-59

12559

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

21288

Males

12839

M55-59

12839

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

21204

Males

12677

M55-59

12677

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21205

Males

12592

M55-59

12592

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

22359

Males

13081

M55-59

13081

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22204

Males

12974

M55-59

12974

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

22117

Males

12862

M55-59

12862

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21101

Males

12330

M55-59

12330

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21385

Males

12474

M55-59

12474

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

22846

Males

13194

M55-59

13194

Passing Analysis

Category:
Athletes Passed
594
Passed By
6415
Net Change
-5821
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13805
5K → 10K170447-277#13805#14082
10K → 15K67682-615#14082#14697
15K → 20K441138-1094#14697#15791
20K → Half7211-204#15791#15995
Half → 25K27854-827#15995#16822
25K → 30K421100-1058#16822#17880
30K → 20M45426-381#17880#18261
20M → 21M40318-278#18261#18539
21M → 35K19240-221#18539#18760
35K → 23M27361-334#18760#19094
23M → 24M29225-196#19094#19290
24M → 40K41131-90#19290#19380
40K → 25.2M1870-52#19380#19432
25.2M → Finish18212-194#19432#19626
TOTALS5946415-5821
📊

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