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BOSTON MARATHON 2025

Zhou Zhou

Bib: 8947•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 22%
Gender (Male)
#0 / 16105
Top 34%
Masters (Masters Men)
#0 / 10463
Top 20%
Division (M55-59)
#0 / 1648
Top 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:53
Rank: #8142
Start → 5K
21:53 | 7:03/mi
10K· 6.21 mi
43:30
Rank: #7854 (+288)
5K → 10K
21:37 | 6:57/mi
15K· 9.32 mi
1:05:04
Rank: #7623 (+231)
10K → 15K
21:34 | 6:56/mi
20K· 12.43 mi
1:27:06
Rank: #7556 (+67)
15K → 20K
22:02 | 7:06/mi
Half· 13.11 mi
1:31:51
Rank: #7530 (+26)
20K → Half
4:45 | 6:58/mi
25K· 15.53 mi
1:48:46
Rank: #7278 (+252)
Half → 25K
16:55 | 6:59/mi
30K· 18.64 mi
2:11:09
Rank: #6895 (+383)
25K → 30K
22:23 | 7:12/mi
20M
2:20:55
Rank: #6684 (+211)
30K → 20M
9:46 | 7:11/mi
21M
2:28:32
Rank: #6521 (+163)
20M → 21M
7:37 | 7:37/mi
35K· 21.75 mi
2:33:57
Rank: #6496 (+25)
21M → 35K
5:25 | 7:14/mi
23M
2:43:05
Rank: #6352 (+144)
35K → 23M
9:08 | 7:18/mi
24M
2:50:19
Rank: #6293 (+59)
23M → 24M
7:14 | 7:14/mi
40K· 24.85 mi
2:56:43
Rank: #6254 (+39)
24M → 40K
6:24 | 7:29/mi
25.2M
2:59:33
Rank: #6246 (+8)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:06:58
Rank: #6225 (+21)
25.2M → Finish
7:25 | 7:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:51
Pace7:00 /mi
2nd Half
Distance13.11 mi
Time1:35:07
Pace7:15 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0221:537:0321:53
7:03
-
10K
6.21 mi11:08:3943:307:0021:37
6:57
-0:06
15K
9.32 mi11:30:131:05:046:5921:34
6:56
-0:01
20K
12.43 mi11:52:151:27:067:0122:02
7:06
+0:10
Half
13.11 mi11:57:001:31:517:004:45
6:58
-0:08
25K
15.53 mi12:13:551:48:467:0016:55
6:59
+0:01
30K
18.64 mi12:36:182:11:097:0222:23
7:12
+0:13
20M
20.00 mi12:46:042:20:557:039:46
7:11
-0:01
21M
21.00 mi12:53:412:28:327:047:37
7:37
+0:26
35K
21.75 mi12:59:062:33:577:055:25
7:14
-0:23
23M
23.00 mi13:08:142:43:057:059:08
7:18
+0:04
24M
24.00 mi13:15:282:50:197:067:14
7:14
-0:04
40K
24.85 mi13:21:522:56:437:076:24
7:29
+0:15
25.2M
25.20 mi13:24:422:59:337:082:50
8:13
+0:44
Finish
26.22 mi13:32:073:06:587:087:25
7:17
-0:56

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

6:56 /mi

Average Pace

7:08 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:08

98% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

2:50

2% of race

Average Pace: 7:08 /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 mi10:47:0221:537:0321:53
7:03
#8142
10K
6.21 mi11:08:3943:307:0021:37
6:57
#7854
15K
9.32 mi11:30:131:05:046:5921:34
6:56
#7623
20K
12.43 mi11:52:151:27:067:0122:02
7:06
#7556
Half
13.11 mi11:57:001:31:517:004:45
6:58
#7530
25K
15.53 mi12:13:551:48:467:0016:55
6:59
#7278
30K
18.64 mi12:36:182:11:097:0222:23
7:12
#6895
20M
20.00 mi12:46:042:20:557:039:46
7:11
#6684
21M
21.00 mi12:53:412:28:327:047:37
7:37
#6521
35K
21.75 mi12:59:062:33:577:055:25
7:14
#6496
23M
23.00 mi13:08:142:43:057:059:08
7:18
#6352
24M
24.00 mi13:15:282:50:197:067:14
7:14
#6293
40K
24.85 mi13:21:522:56:437:076:24
7:29
#6254
25.2M
25.20 mi13:24:422:59:337:082:50
8:13
#6246
Finish
26.22 mi13:32:073:06:587:087:25
7:17
#6225
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi8142708970897229(Top 25%)6417(Top 40%)6417(Top 389%)
10K6.21 mi3.10 mi7854+2886884+2056884+2057638(Top 27%)6737(Top 42%)6737(Top 409%)
15K9.32 mi3.11 mi7623+2316722+1626722+1627229(Top 25%)6417(Top 40%)6417(Top 389%)
20K12.43 mi3.11 mi7556+676671+516671+517449(Top 26%)6518(Top 40%)6518(Top 396%)
Half13.11 mi0.68 mi7530+266648+236648+237239(Top 25%)6381(Top 40%)6381(Top 387%)
25K15.53 mi2.42 mi7278+2526452+1966452+1966166(Top 22%)5516(Top 34%)5516(Top 335%)
30K18.64 mi3.11 mi6895+3836128+3246128+3245920(Top 21%)5255(Top 33%)5255(Top 319%)
20M20.00 mi1.36 mi6684+2115947+1815947+1815127(Top 18%)4576(Top 28%)4576(Top 278%)
21M21.00 mi1.00 mi6521+1635803+1445803+1445206(Top 18%)4527(Top 28%)4527(Top 275%)
35K21.75 mi0.75 mi6496+255774+295774+296826(Top 24%)5585(Top 35%)5585(Top 339%)
23M23.00 mi1.25 mi6352+1445643+1315643+1315426(Top 19%)4615(Top 29%)4615(Top 280%)
24M24.00 mi1.00 mi6293+595581+625581+626001(Top 21%)4915(Top 31%)4915(Top 298%)
40K24.85 mi0.85 mi6254+395532+495532+496679(Top 24%)5236(Top 33%)5236(Top 318%)
25.2M25.20 mi0.35 mi6246+85514+185514+187062(Top 25%)5352(Top 33%)5352(Top 325%)
Finish26.22 mi1.02 mi6225+215475+395475+397578(Top 27%)5658(Top 35%)5658(Top 343%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

7229

Males

6417

M55-59

6417

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7638

Males

6737

M55-59

6737

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

7229

Males

6417

M55-59

6417

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7449

Males

6518

M55-59

6518

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

7239

Males

6381

M55-59

6381

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

6166

Males

5516

M55-59

5516

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5920

Males

5255

M55-59

5255

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

5127

Males

4576

M55-59

4576

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

5206

Males

4527

M55-59

4527

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6826

Males

5585

M55-59

5585

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5426

Males

4615

M55-59

4615

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

6001

Males

4915

M55-59

4915

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6679

Males

5236

M55-59

5236

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7062

Males

5352

M55-59

5352

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7578

Males

5658

M55-59

5658

Passing Analysis

Category:
Athletes Passed
2396
Passed By
479
Net Change
+1917
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8142
5K → 10K388100+288#8142#7854
10K → 15K27544+231#7854#7623
15K → 20K15891+67#7623#7556
20K → Half3711+26#7556#7530
Half → 25K2619+252#7530#7278
25K → 30K40522+383#7278#6895
30K → 20M2143+211#6895#6684
20M → 21M17512+163#6684#6521
21M → 35K5833+25#6521#6496
35K → 23M15915+144#6496#6352
23M → 24M9132+59#6352#6293
24M → 40K7233+39#6293#6254
40K → 25.2M3123+8#6254#6246
25.2M → Finish7251+21#6246#6225
TOTALS2396479+1917
📊

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