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BOSTON MARATHON 2025

Andi Peng

Bib: 19710•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:41
Rank: #18520
Start → 5K
8:16/mi
25:41 split
10K· 6.21 mi
51:06
Rank: #18134 (+386)
5K → 10K
8:11/mi
25:25 split
15K· 9.32 mi
1:16:22
Rank: #17722 (+412)
10K → 15K
8:08/mi
25:16 split
20K· 12.43 mi
1:41:54
Rank: #17342 (+380)
15K → 20K
8:13/mi
25:32 split
Half· 13.11 mi
1:47:30
Rank: #17328 (+14)
20K → Half
8:12/mi
5:36 split
25K· 15.53 mi
2:08:18
Rank: #17342 (-14)
Half → 25K
8:35/mi
20:48 split
30K· 18.64 mi
2:36:03
Rank: #17268 (+74)
25K → 30K
8:56/mi
27:45 split
20M
2:47:57
Rank: #17109 (+159)
30K → 20M
8:45/mi
11:54 split
21M
2:56:52
Rank: #16847 (+262)
20M → 21M
8:55/mi
8:55 split
35K· 21.75 mi
3:03:28
Rank: #16846 (+1)
21M → 35K
8:49/mi
6:36 split
23M
3:15:01
Rank: #16874 (-28)
35K → 23M
9:13/mi
11:33 split
24M
3:23:43
Rank: #16819 (+55)
23M → 24M
8:42/mi
8:42 split
40K· 24.85 mi
3:31:34
Rank: #16820 (-1)
24M → 40K
9:11/mi
7:51 split
25.2M
3:35:03
Rank: #16829 (-9)
40K → 25.2M
10:06/mi
3:29 split
Finish· 26.22 mi
3:43:48
Rank: #16842 (-13)
25.2M → Finish
8:35/mi
8:45 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:30
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time1:56:18
Pace8:52 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4925:418:1625:41
8:16
-
10K
6.21 mi11:43:1451:068:1325:25
8:11
-0:05
15K
9.32 mi12:08:301:16:228:1225:16
8:08
-0:03
20K
12.43 mi12:34:021:41:548:1225:32
8:13
+0:05
Half
13.11 mi12:39:381:47:308:125:36
8:12
-0:01
25K
15.53 mi13:00:262:08:188:1620:48
8:35
+0:23
30K
18.64 mi13:28:112:36:038:2227:45
8:56
+0:21
20M
20.00 mi13:40:052:47:578:2411:54
8:45
-0:11
21M
21.00 mi13:49:002:56:528:258:55
8:55
+0:10
35K
21.75 mi13:55:363:03:288:266:36
8:49
-0:06
23M
23.00 mi14:07:093:15:018:2911:33
9:13
+0:24
24M
24.00 mi14:15:513:23:438:298:42
8:42
-0:31
40K
24.85 mi14:23:423:31:348:317:51
9:11
+0:29
25.2M
25.20 mi14:27:113:35:038:323:29
10:06
+0:55
Finish
26.22 mi14:35:563:43:488:338:45
8:35
-1:31

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

8:08 /mi

Average Pace

8:33 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:30

48% of race

Time at Steady Pace

1:33:25

42% of race

Time at Slower Pace

22:53

10% of race

Average Pace: 8:32 /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 mi11:17:4925:418:1625:41
8:16
#18520
10K
6.21 mi11:43:1451:068:1325:25
8:11
#18134
15K
9.32 mi12:08:301:16:228:1225:16
8:08
#17722
20K
12.43 mi12:34:021:41:548:1225:32
8:13
#17342
Half
13.11 mi12:39:381:47:308:125:36
8:12
#17328
25K
15.53 mi13:00:262:08:188:1620:48
8:35
#17342
30K
18.64 mi13:28:112:36:038:2227:45
8:56
#17268
20M
20.00 mi13:40:052:47:578:2411:54
8:45
#17109
21M
21.00 mi13:49:002:56:528:258:55
8:55
#16847
35K
21.75 mi13:55:363:03:288:266:36
8:49
#16846
23M
23.00 mi14:07:093:15:018:2911:33
9:13
#16874
24M
24.00 mi14:15:513:23:438:298:42
8:42
#16819
40K
24.85 mi14:23:423:31:348:317:51
9:11
#16820
25.2M
25.20 mi14:27:113:35:038:323:29
10:06
#16829
Finish
26.22 mi14:35:563:43:488:338:45
8:35
#16842
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi185206640664016979(Top 60%)5723(Top 47%)5723(Top 105%)
10K6.21 mi3.10 mi18134+3866412+2286412+22817767(Top 63%)6160(Top 50%)6160(Top 113%)
15K9.32 mi3.11 mi17722+4126158+2546158+25416979(Top 60%)5723(Top 47%)5723(Top 105%)
20K12.43 mi3.11 mi17342+3805942+2165942+21616442(Top 58%)5462(Top 45%)5462(Top 100%)
Half13.11 mi0.68 mi17328+145942594217370(Top 61%)5969(Top 49%)5969(Top 109%)
25K15.53 mi2.42 mi17342-145964-225964-2217684(Top 62%)6240(Top 51%)6240(Top 114%)
30K18.64 mi3.11 mi17268+745973-95973-917326(Top 61%)6203(Top 51%)6203(Top 113%)
20M20.00 mi1.36 mi17109+1595914+595914+5915446(Top 54%)5296(Top 43%)5296(Top 97%)
21M21.00 mi1.00 mi16847+2625782+1325782+13213071(Top 46%)4171(Top 34%)4171(Top 76%)
35K21.75 mi0.75 mi16846+15800-185800-1817385(Top 61%)6572(Top 54%)6572(Top 120%)
23M23.00 mi1.25 mi16874-285860-605860-6017451(Top 61%)6689(Top 55%)6689(Top 122%)
24M24.00 mi1.00 mi16819+555852+85852+815770(Top 56%)5788(Top 47%)5788(Top 106%)
40K24.85 mi0.85 mi16820-15886-345886-3417275(Top 61%)6733(Top 55%)6733(Top 123%)
25.2M25.20 mi0.35 mi16829-95907-215907-2117493(Top 62%)6847(Top 56%)6847(Top 125%)
Finish26.22 mi1.02 mi16842-135929-225929-2216778(Top 59%)6439(Top 53%)6439(Top 118%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16979

Females

5723

F18-39

5723

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

17767

Females

6160

F18-39

6160

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16979

Females

5723

F18-39

5723

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

16442

Females

5462

F18-39

5462

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17370

Females

5969

F18-39

5969

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17684

Females

6240

F18-39

6240

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17326

Females

6203

F18-39

6203

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15446

Females

5296

F18-39

5296

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

13071

Females

4171

F18-39

4171

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

17385

Females

6572

F18-39

6572

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17451

Females

6689

F18-39

6689

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

15770

Females

5788

F18-39

5788

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17275

Females

6733

F18-39

6733

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17493

Females

6847

F18-39

6847

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

16778

Females

6439

F18-39

6439

Passing Analysis

Category:
Athletes Passed
2724
Passed By
1046
Net Change
+1678
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18520
5K → 10K500114+386#18520#18134
10K → 15K45947+412#18134#17722
15K → 20K40828+380#17722#17342
20K → Half4026+14#17342#17328
Half → 25K164178-14#17328#17342
25K → 30K256182+74#17342#17268
30K → 20M18425+159#17268#17109
20M → 21M2708+262#17109#16847
21M → 35K6463+1#16847#16846
35K → 23M100128-28#16846#16874
23M → 24M10146+55#16874#16819
24M → 40K8182-1#16819#16820
40K → 25.2M3241-9#16820#16829
25.2M → Finish6578-13#16829#16842
TOTALS27241046+1678
📊

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