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BOSTON MARATHON 2025

William Zhang

Bib: 10632•M

CA

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 37%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:10/mi
22:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:16/mi
44:49
↑ 79↓ 1380.4%
15K· 9.32 mi
7:16/mi
1:07:25
↑ 67↓ 78
20K· 12.43 mi
7:10/mi
1:29:42
↑ 106↓ 860.1%
Half· 13.11 mi
7:07/mi
1:34:33
↑ 19↓ 370.5%
25K· 15.53 mi
7:13/mi
1:52:02
↑ 66↓ 880.2%
30K· 18.64 mi
7:24/mi
2:15:01
↑ 181↓ 1480.2%
20M
7:18/mi
2:24:56
↑ 64↓ 500.2%
21M
7:47/mi
2:32:43
↑ 106↓ 241.6%
35K· 21.75 mi
7:13/mi
2:38:07
↑ 17↓ 861.7%
23M
8:46/mi
2:49:06
↑ 23↓ 630.6%
24M
6:59/mi
2:56:05
↓ 821.3%
40K· 24.85 mi
7:01/mi
3:02:05
↓ 200.3%
25.2M
7:44/mi
3:04:45
↑ 13↓ 160.2%
Finish· 26.22 mi
6:45/mi
3:11:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:33
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:37:05
Pace7:24 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4022:157:1022:15
7:10
-
10K
6.21 mi11:13:1444:497:1322:34
7:16
+0:06
15K
9.32 mi11:35:501:07:257:1422:36
7:16
0:00
20K
12.43 mi11:58:071:29:427:1322:17
7:10
-0:06
Half
13.11 mi12:02:581:34:337:134:51
7:07
-0:03
25K
15.53 mi12:20:271:52:027:1317:29
7:13
+0:06
30K
18.64 mi12:43:262:15:017:1522:59
7:24
+0:11
20M
20.00 mi12:53:212:24:567:159:55
7:18
-0:06
21M
21.00 mi13:01:082:32:437:167:47
7:47
+0:29
35K
21.75 mi13:06:322:38:077:165:24
7:13
-0:34
23M
23.00 mi13:17:312:49:067:2110:59
8:46
+1:33
24M
24.00 mi13:24:302:56:057:206:59
6:59
-1:47
40K
24.85 mi13:30:303:02:057:206:00
7:01
+0:02
25.2M
25.20 mi13:33:103:04:457:202:40
7:44
+0:43
Finish
26.22 mi13:40:033:11:387:196:53
6:45
-0:59

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

6:45 /mi

Average Pace

7:19 /mi

Slowest Pace

8:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

13:52

7% of race

Time at Steady Pace

2:36:20

82% of race

Time at Slower Pace

21:26

11% of race

Average Pace: 7:19 /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 mi10:50:4022:157:1022:15
7:10
#9133
10K
6.21 mi11:13:1444:497:1322:34
7:16
#9543
15K
9.32 mi11:35:501:07:257:1422:36
7:16
#9609
20K
12.43 mi11:58:071:29:427:1322:17
7:10
#9138
Half
13.11 mi12:02:581:34:337:134:51
7:07
#9100
25K
15.53 mi12:20:271:52:027:1317:29
7:13
#8773
30K
18.64 mi12:43:262:15:017:1522:59
7:24
#8370
20M
20.00 mi12:53:212:24:567:159:55
7:18
#8096
21M
21.00 mi13:01:082:32:437:167:47
7:47
#7905
35K
21.75 mi13:06:322:38:077:165:24
7:13
#7829
23M
23.00 mi13:17:312:49:067:2110:59
8:46
#8239
24M
24.00 mi13:24:302:56:057:206:59
6:59
#8004
40K
24.85 mi13:30:303:02:057:206:00
7:01
#7780
25.2M
25.20 mi13:33:103:04:457:202:40
7:44
#7691
Finish
26.22 mi13:40:033:11:387:196:53
6:45
#7507
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9133768576859752(Top 34%)7946(Top 49%)7946(Top 333%)
10K6.21 mi3.10 mi9543-4107924-2397924-23910010(Top 35%)8142(Top 51%)8142(Top 341%)
15K9.32 mi3.11 mi9609-667927-37927-39752(Top 34%)7946(Top 49%)7946(Top 333%)
20K12.43 mi3.11 mi9138+4717641+2867641+2867973(Top 28%)6856(Top 43%)6856(Top 287%)
Half13.11 mi0.68 mi9100+387618+237618+238294(Top 29%)7063(Top 44%)7063(Top 296%)
25K15.53 mi2.42 mi8773+3277402+2167402+2167680(Top 27%)6561(Top 41%)6561(Top 275%)
30K18.64 mi3.11 mi8370+4037102+3007102+3007024(Top 25%)5985(Top 37%)5985(Top 251%)
20M20.00 mi1.36 mi8096+2746894+2086894+2085770(Top 20%)5031(Top 31%)5031(Top 211%)
21M21.00 mi1.00 mi7905+1916748+1466748+1466079(Top 21%)5105(Top 32%)5105(Top 214%)
35K21.75 mi0.75 mi7829+766677+716677+716689(Top 24%)5508(Top 34%)5508(Top 231%)
23M23.00 mi1.25 mi8239-4106892-2156892-21514931(Top 53%)9583(Top 60%)9583(Top 402%)
24M24.00 mi1.00 mi8004+2356700+1926700+1924537(Top 16%)3930(Top 24%)3930(Top 165%)
40K24.85 mi0.85 mi7780+2246531+1696531+1694011(Top 14%)3499(Top 22%)3499(Top 147%)
25.2M25.20 mi0.35 mi7691+896458+736458+734482(Top 16%)3760(Top 23%)3760(Top 158%)
Finish26.22 mi1.02 mi7507+1846313+1456313+1454218(Top 15%)3595(Top 22%)3595(Top 151%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9752

Males

7946

M45-49

7946

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

10010

Males

8142

M45-49

8142

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9752

Males

7946

M45-49

7946

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7973

Males

6856

M45-49

6856

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

8294

Males

7063

M45-49

7063

Half→25K

13.1 - 15.5 mi

Top 27%
×4story building
+66ft-88ft

Overall

7680

Males

6561

M45-49

6561

25K→30K

15.5 - 18.6 mi

Top 25%
×9story building
+181ft-148ft

Overall

7024

Males

5985

M45-49

5985

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5770

Males

5031

M45-49

5031

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

6079

Males

5105

M45-49

5105

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6689

Males

5508

M45-49

5508

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14931

Males

9583

M45-49

9583

23M→24M

23.0 - 24.0 mi

Top 16%
×6story building
+12ft-82ft

Overall

4537

Males

3930

M45-49

3930

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

4011

Males

3499

M45-49

3499

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4482

Males

3760

M45-49

3760

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4218

Males

3595

M45-49

3595

Passing Analysis

Category:
Athletes Passed
2905
Passed By
1278
Net Change
+1626
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9133
5K → 10K95504-410#9133#9543
10K → 15K144210-66#9543#9609
15K → 20K48110+471#9609#9138
20K → Half5214+38#9138#9100
Half → 25K34518+327#9100#8773
25K → 30K44239+403#8773#8370
30K → 20M2751+274#8370#8096
20M → 21M20716+191#8096#7905
21M → 35K9317+76#7905#7829
35K → 23M32442-410#7829#8239
23M → 24M2361+235#8239#8004
24M → 40K2240+224#8004#7780
40K → 25.2M934+89#7780#7691
25.2M → Finish1862+184#7691#7507
TOTALS29051278+1626
📊

Passing Visuals

Category:
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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