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BOSTON MARATHON 2025

Guanghui Zhang

Bib: 7378•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 26%
Gender (Male)
#0 / 16105
Top 39%
Masters (Masters Men)
#0 / 10463
Top 26%
Division (M45-49)
#0 / 2386
Top 36%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:32
Rank: #7292
Start → 5K
21:32 | 6:56/mi
10K· 6.21 mi
42:50
Rank: #7099 (+193)
5K → 10K
21:18 | 6:51/mi
15K· 9.32 mi
1:04:22
Rank: #7115 (-16)
10K → 15K
21:32 | 6:56/mi
20K· 12.43 mi
1:26:02
Rank: #7011 (+104)
15K → 20K
21:40 | 6:58/mi
Half· 13.11 mi
1:30:49
Rank: #7038 (-27)
20K → Half
4:47 | 7:01/mi
25K· 15.53 mi
1:48:02
Rank: #6962 (+76)
Half → 25K
17:13 | 7:06/mi
30K· 18.64 mi
2:11:17
Rank: #6941 (+21)
25K → 30K
23:15 | 7:29/mi
20M
2:21:40
Rank: #6943 (-2)
30K → 20M
10:23 | 7:38/mi
21M
2:29:53
Rank: #6967 (-24)
20M → 21M
8:13 | 8:13/mi
35K· 21.75 mi
2:35:39
Rank: #7050 (-83)
21M → 35K
5:46 | 7:42/mi
23M
2:45:25
Rank: #7054 (-4)
35K → 23M
9:46 | 7:48/mi
24M
2:52:59
Rank: #7058 (-4)
23M → 24M
7:34 | 7:34/mi
40K· 24.85 mi
2:59:52
Rank: #7139 (-81)
24M → 40K
6:53 | 8:03/mi
25.2M
3:02:59
Rank: #7187 (-48)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:11:05
Rank: #7351 (-164)
25.2M → Finish
8:06 | 7:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:49
Pace6:56 /mi
2nd Half
Distance13.11 mi
Time1:40:16
Pace7:39 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:0921:326:5621:32
6:56
-
10K
6.21 mi10:49:2742:506:5421:18
6:51
-0:05
15K
9.32 mi11:10:591:04:226:5421:32
6:56
+0:05
20K
12.43 mi11:32:391:26:026:5521:40
6:58
+0:02
Half
13.11 mi11:37:261:30:496:564:47
7:01
+0:03
25K
15.53 mi11:54:391:48:026:5717:13
7:06
+0:05
30K
18.64 mi12:17:542:11:177:0323:15
7:29
+0:23
20M
20.00 mi12:28:172:21:407:0510:23
7:38
+0:09
21M
21.00 mi12:36:302:29:537:088:13
8:13
+0:35
35K
21.75 mi12:42:162:35:397:095:46
7:42
-0:31
23M
23.00 mi12:52:022:45:257:129:46
7:48
+0:06
24M
24.00 mi12:59:362:52:597:127:34
7:34
-0:14
40K
24.85 mi13:06:292:59:527:146:53
8:03
+0:29
25.2M
25.20 mi13:09:363:02:597:163:07
9:02
+0:59
Finish
26.22 mi13:17:423:11:057:188:06
7:57
-1:05

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

6:51 /mi

Average Pace

7:18 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:02

57% of race

Time at Steady Pace

56:44

30% of race

Time at Slower Pace

26:19

14% of race

Average Pace: 7:17 /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 mi10:28:0921:326:5621:32
6:56
#7292
10K
6.21 mi10:49:2742:506:5421:18
6:51
#7099
15K
9.32 mi11:10:591:04:226:5421:32
6:56
#7115
20K
12.43 mi11:32:391:26:026:5521:40
6:58
#7011
Half
13.11 mi11:37:261:30:496:564:47
7:01
#7038
25K
15.53 mi11:54:391:48:026:5717:13
7:06
#6962
30K
18.64 mi12:17:542:11:177:0323:15
7:29
#6941
20M
20.00 mi12:28:172:21:407:0510:23
7:38
#6943
21M
21.00 mi12:36:302:29:537:088:13
8:13
#6967
35K
21.75 mi12:42:162:35:397:095:46
7:42
#7050
23M
23.00 mi12:52:022:45:257:129:46
7:48
#7054
24M
24.00 mi12:59:362:52:597:127:34
7:34
#7058
40K
24.85 mi13:06:292:59:527:146:53
8:03
#7139
25.2M
25.20 mi13:09:363:02:597:163:07
9:02
#7187
Finish
26.22 mi13:17:423:11:057:188:06
7:57
#7351
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7292651365137160(Top 25%)6366(Top 40%)6366(Top 267%)
10K6.21 mi3.10 mi7099+1936367+1466367+1466904(Top 24%)6198(Top 38%)6198(Top 260%)
15K9.32 mi3.11 mi7115-166372-56372-57160(Top 25%)6366(Top 40%)6366(Top 267%)
20K12.43 mi3.11 mi7011+1046282+906282+906716(Top 24%)5991(Top 37%)5991(Top 251%)
Half13.11 mi0.68 mi7038-276298-166298-167630(Top 27%)6651(Top 41%)6651(Top 279%)
25K15.53 mi2.42 mi6962+766228+706228+706971(Top 25%)6096(Top 38%)6096(Top 255%)
30K18.64 mi3.11 mi6941+216165+636165+637613(Top 27%)6349(Top 39%)6349(Top 266%)
20M20.00 mi1.36 mi6943-26137+286137+287945(Top 28%)6399(Top 40%)6399(Top 268%)
21M21.00 mi1.00 mi6967-246130+76130+78648(Top 30%)6612(Top 41%)6612(Top 277%)
35K21.75 mi0.75 mi7050-836169-396169-3910082(Top 35%)7392(Top 46%)7392(Top 310%)
23M23.00 mi1.25 mi7054-46133+366133+368550(Top 30%)6457(Top 40%)6457(Top 271%)
24M24.00 mi1.00 mi7058-46105+286105+288119(Top 29%)6177(Top 38%)6177(Top 259%)
40K24.85 mi0.85 mi7139-816130-256130-2510506(Top 37%)7291(Top 45%)7291(Top 306%)
25.2M25.20 mi0.35 mi7187-486149-196149-1911903(Top 42%)7914(Top 49%)7914(Top 332%)
Finish26.22 mi1.02 mi7351-1646222-736222-7312493(Top 44%)8265(Top 51%)8265(Top 346%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

7160

Males

6366

M45-49

6366

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6904

Males

6198

M45-49

6198

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

7160

Males

6366

M45-49

6366

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6716

Males

5991

M45-49

5991

20K→Half

12.4 - 13.1 mi

Top 27%
×2stories
+19ft-37ft

Overall

7630

Males

6651

M45-49

6651

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

6971

Males

6096

M45-49

6096

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7613

Males

6349

M45-49

6349

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7945

Males

6399

M45-49

6399

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8648

Males

6612

M45-49

6612

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

10082

Males

7392

M45-49

7392

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

8550

Males

6457

M45-49

6457

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8119

Males

6177

M45-49

6177

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10506

Males

7291

M45-49

7291

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11903

Males

7914

M45-49

7914

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12493

Males

8265

M45-49

8265

Passing Analysis

Category:
Athletes Passed
1444
Passed By
1503
Net Change
-59
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7292
5K → 10K311118+193#7292#7099
10K → 15K136152-16#7099#7115
15K → 20K20399+104#7115#7011
20K → Half1946-27#7011#7038
Half → 25K14569+76#7038#6962
25K → 30K184163+21#6962#6941
30K → 20M98100-2#6941#6943
20M → 21M88112-24#6943#6967
21M → 35K29112-83#6967#7050
35K → 23M8993-4#7050#7054
23M → 24M6165-4#7054#7058
24M → 40K41122-81#7058#7139
40K → 25.2M1563-48#7139#7187
25.2M → Finish25189-164#7187#7351
TOTALS14441503-59
📊

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