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BOSTON MARATHON 2025

Peng Zhang

Bib: 15796•X

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Other)
#0 / 71
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
7:34/mi
23:31
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
46:42
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:10:12
↑ 67↓ 78
20K· 12.43 mi
7:44/mi
1:34:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:39:30
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:00:54
↑ 66↓ 880.2%
30K· 18.64 mi
10:05/mi
2:32:15
↑ 181↓ 1480.2%
20M
10:46/mi
2:46:53
↑ 64↓ 500.2%
21M
11:35/mi
2:58:28
↑ 106↓ 241.6%
35K· 21.75 mi
9:48/mi
3:05:48
↑ 17↓ 861.7%
23M
10:47/mi
3:19:18
↑ 23↓ 630.6%
24M
9:30/mi
3:28:48
↓ 821.3%
40K· 24.85 mi
9:44/mi
3:37:07
↓ 200.3%
25.2M
10:23/mi
3:40:42
↑ 13↓ 160.2%
Finish· 26.22 mi
9:24/mi
3:50:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:30
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time2:10:47
Pace9:59 /mi
📊Positive Split: 31.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:1523:317:3423:31
7:34
-
10K
6.21 mi11:37:2646:427:3123:11
7:28
-0:06
15K
9.32 mi12:00:561:10:127:3223:30
7:34
+0:06
20K
12.43 mi12:24:571:34:137:3524:01
7:44
+0:10
Half
13.11 mi12:30:141:39:307:355:17
7:45
+0:01
25K
15.53 mi12:51:382:00:547:4721:24
8:50
+1:05
30K
18.64 mi13:22:592:32:158:1031:21
10:05
+1:15
20M
20.00 mi13:37:372:46:538:2114:38
10:46
+0:41
21M
21.00 mi13:49:122:58:288:3011:35
11:35
+0:49
35K
21.75 mi13:56:323:05:488:337:20
9:48
-1:47
23M
23.00 mi14:10:023:19:188:4013:30
10:47
+0:59
24M
24.00 mi14:19:323:28:488:429:30
9:30
-1:17
40K
24.85 mi14:27:513:37:078:448:19
9:44
+0:14
25.2M
25.20 mi14:31:263:40:428:453:35
10:23
+0:39
Finish
26.22 mi14:41:013:50:178:479:35
9:24
-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

7:28 /mi

Average Pace

8:47 /mi

Slowest Pace

11:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:54

53% of race

Time at Steady Pace

1:06:05

29% of race

Time at Slower Pace

43:18

19% of race

Average Pace: 8:47 /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 mi11:14:1523:317:3423:31
7:34
#12826
10K
6.21 mi11:37:2646:427:3123:11
7:28
#12261
15K
9.32 mi12:00:561:10:127:3223:30
7:34
#12249
20K
12.43 mi12:24:571:34:137:3524:01
7:44
#12320
Half
13.11 mi12:30:141:39:307:355:17
7:45
#12398
25K
15.53 mi12:51:382:00:547:4721:24
8:50
#13737
30K
18.64 mi13:22:592:32:158:1031:21
10:05
#15984
20M
20.00 mi13:37:372:46:538:2114:38
10:46
#16787
21M
21.00 mi13:49:122:58:288:3011:35
11:35
#17350
35K
21.75 mi13:56:323:05:488:337:20
9:48
#17559
23M
23.00 mi14:10:023:19:188:4013:30
10:47
#18062
24M
24.00 mi14:19:323:28:488:429:30
9:30
#18152
40K
24.85 mi14:27:513:37:078:448:19
9:44
#18222
25.2M
25.20 mi14:31:263:40:428:453:35
10:23
#18246
Finish
26.22 mi14:41:013:50:178:479:35
9:24
#18381
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallXAge DivSeg. OverallSeg. XSeg. Age Div
5K3.11 mi3.11 mi12826353512271(Top 43%)36(Top 51%)36
10K6.21 mi3.10 mi12261+565353511707(Top 41%)34(Top 48%)34
15K9.32 mi3.11 mi12249+1237-237-212271(Top 43%)36(Top 51%)36
20K12.43 mi3.11 mi12320-71373712645(Top 45%)35(Top 49%)35
Half13.11 mi0.68 mi12398-78373713691(Top 48%)39(Top 55%)39
25K15.53 mi2.42 mi13737-133942-542-519045(Top 67%)54(Top 76%)54
30K18.64 mi3.11 mi15984-224748-648-621856(Top 77%)59(Top 83%)59
20M20.00 mi1.36 mi16787-80350-250-223095(Top 81%)58(Top 82%)58
21M21.00 mi1.00 mi17350-563505022769(Top 80%)58(Top 82%)58
35K21.75 mi0.75 mi17559-20951-151-121310(Top 75%)55(Top 77%)55
23M23.00 mi1.25 mi18062-50352-152-122696(Top 80%)56(Top 79%)56
24M24.00 mi1.00 mi18152-9051+151+119607(Top 69%)47(Top 66%)47
40K24.85 mi0.85 mi18222-70515119541(Top 69%)50(Top 70%)50
25.2M25.20 mi0.35 mi18246-24515118530(Top 65%)50(Top 70%)50
Finish26.22 mi1.02 mi18381-135515120799(Top 73%)53(Top 75%)53

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

12271

X

36

Age Div

36

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11707

X

34

Age Div

34

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

12271

X

36

Age Div

36

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12645

X

35

Age Div

35

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13691

X

39

Age Div

39

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

19045

X

54

Age Div

54

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

21856

X

59

Age Div

59

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

23095

X

58

Age Div

58

20M→21M

20.0 - 21.0 mi

Top 80%
×8story building
+106ft-24ft

Overall

22769

X

58

Age Div

58

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21310

X

55

Age Div

55

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22696

X

56

Age Div

56

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

19607

X

47

Age Div

47

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19541

X

50

Age Div

50

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18530

X

50

Age Div

50

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20799

X

53

Age Div

53

Passing Analysis

Category:
Athletes Passed
1313
Passed By
6868
Net Change
-5555
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12826
5K → 10K65691+565#12826#12261
10K → 15K194182+12#12261#12249
15K → 20K161232-71#12249#12320
20K → Half1290-78#12320#12398
Half → 25K321371-1339#12398#13737
25K → 30K182265-2247#13737#15984
30K → 20M13816-803#15984#16787
20M → 21M27590-563#16787#17350
21M → 35K32241-209#17350#17559
35K → 23M29532-503#17559#18062
23M → 24M51141-90#18062#18152
24M → 40K48118-70#18152#18222
40K → 25.2M1741-24#18222#18246
25.2M → Finish23158-135#18246#18381
TOTALS13136868-5555
📊

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