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BOSTON MARATHON 2025

Chen Qi Zhao

Bib: 15112•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
Masters (Masters Women)
#0 / 6759
Top 36%
Division (F40-44)
#0 / 1718
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
7:29/mi
23:16
↑ 97↓ 3451.5%
10K· 6.21 mi
7:21/mi
46:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:42/mi
1:10:02
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:35:57
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:41:16
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:01:20
↑ 66↓ 880.2%
30K· 18.64 mi
8:44/mi
2:28:27
↑ 181↓ 1480.2%
20M
9:31/mi
2:41:23
↑ 64↓ 500.2%
21M
9:43/mi
2:51:06
↑ 106↓ 241.6%
35K· 21.75 mi
11:27/mi
2:59:40
↑ 17↓ 861.7%
23M
11:13/mi
3:13:43
↑ 23↓ 630.6%
24M
9:04/mi
3:22:47
↓ 821.3%
40K· 24.85 mi
10:08/mi
3:31:27
↓ 200.3%
25.2M
10:15/mi
3:34:59
↑ 13↓ 160.2%
Finish· 26.22 mi
8:27/mi
3:43:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:16
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time2:02:20
Pace9:20 /mi
📊Positive Split: 20.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:4723:167:2923:16
7:29
-
10K
6.21 mi11:18:3746:067:2522:50
7:21
-0:08
15K
9.32 mi11:42:331:10:027:3123:56
7:42
+0:21
20K
12.43 mi12:08:281:35:577:4325:55
8:21
+0:39
Half
13.11 mi12:13:471:41:167:435:19
7:48
-0:33
25K
15.53 mi12:33:512:01:207:4920:04
8:17
+0:29
30K
18.64 mi13:00:582:28:277:5827:07
8:44
+0:27
20M
20.00 mi13:13:542:41:238:0412:56
9:31
+0:47
21M
21.00 mi13:23:372:51:068:099:43
9:43
+0:12
35K
21.75 mi13:32:112:59:408:168:34
11:27
+1:44
23M
23.00 mi13:46:143:13:438:2514:03
11:13
-0:14
24M
24.00 mi13:55:183:22:478:279:04
9:04
-2:09
40K
24.85 mi14:03:583:31:278:308:40
10:08
+1:04
25.2M
25.20 mi14:07:303:34:598:323:32
10:15
+0:07
Finish
26.22 mi14:16:073:43:368:328:37
8:27
-1:48

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

7:21 /mi

Average Pace

8:32 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:21

34% of race

Time at Steady Pace

1:30:47

41% of race

Time at Slower Pace

57:28

26% 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 mi10:55:4723:167:2923:16
7:29
#12167
10K
6.21 mi11:18:3746:067:2522:50
7:21
#11421
15K
9.32 mi11:42:331:10:027:3123:56
7:42
#12119
20K
12.43 mi12:08:281:35:577:4325:55
8:21
#13548
Half
13.11 mi12:13:471:41:167:435:19
7:48
#13577
25K
15.53 mi12:33:512:01:207:4920:04
8:17
#13979
30K
18.64 mi13:00:582:28:277:5827:07
8:44
#14406
20M
20.00 mi13:13:542:41:238:0412:56
9:31
#14896
21M
21.00 mi13:23:372:51:068:099:43
9:43
#15011
35K
21.75 mi13:32:112:59:408:168:34
11:27
#15736
23M
23.00 mi13:46:143:13:438:2514:03
11:13
#16486
24M
24.00 mi13:55:183:22:478:279:04
9:04
#16549
40K
24.85 mi14:03:583:31:278:308:40
10:08
#16791
25.2M
25.20 mi14:07:303:34:598:323:32
10:15
#16811
Finish
26.22 mi14:16:073:43:368:328:37
8:27
#16766
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi121672891289113557(Top 48%)3769(Top 31%)3769(Top 219%)
10K6.21 mi3.10 mi11421+7462514+3772514+37710767(Top 38%)2198(Top 18%)2198(Top 128%)
15K9.32 mi3.11 mi12119-6982905-3912905-39113557(Top 48%)3769(Top 31%)3769(Top 219%)
20K12.43 mi3.11 mi13548-14293760-8553760-85517183(Top 60%)5878(Top 48%)5878(Top 342%)
Half13.11 mi0.68 mi13577-293776-163776-1614313(Top 50%)4264(Top 35%)4264(Top 248%)
25K15.53 mi2.42 mi13979-4024034-2584034-25815787(Top 56%)5190(Top 42%)5190(Top 302%)
30K18.64 mi3.11 mi14406-4274337-3034337-30316168(Top 57%)5563(Top 45%)5563(Top 324%)
20M20.00 mi1.36 mi14896-4904632-2954632-29519257(Top 68%)7397(Top 60%)7397(Top 431%)
21M21.00 mi1.00 mi15011-1154729-974729-9717127(Top 60%)6325(Top 52%)6325(Top 368%)
35K21.75 mi0.75 mi15736-7255180-4515180-45125028(Top 88%)10597(Top 87%)10597(Top 617%)
23M23.00 mi1.25 mi16486-7505627-4475627-44723716(Top 83%)9962(Top 81%)9962(Top 580%)
24M24.00 mi1.00 mi16549-635688-615688-6117704(Top 62%)6870(Top 56%)6870(Top 400%)
40K24.85 mi0.85 mi16791-2425867-1795867-17920900(Top 74%)8609(Top 70%)8609(Top 501%)
25.2M25.20 mi0.35 mi16811-205899-325899-3218109(Top 64%)7184(Top 59%)7184(Top 418%)
Finish26.22 mi1.02 mi16766+455889+105889+1015962(Top 56%)6000(Top 49%)6000(Top 349%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

13557

Females

3769

F40-44

3769

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10767

Females

2198

F40-44

2198

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

13557

Females

3769

F40-44

3769

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

17183

Females

5878

F40-44

5878

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14313

Females

4264

F40-44

4264

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15787

Females

5190

F40-44

5190

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

16168

Females

5563

F40-44

5563

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

19257

Females

7397

F40-44

7397

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

17127

Females

6325

F40-44

6325

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

25028

Females

10597

F40-44

10597

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

23716

Females

9962

F40-44

9962

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17704

Females

6870

F40-44

6870

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

20900

Females

8609

F40-44

8609

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18109

Females

7184

F40-44

7184

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15962

Females

6000

F40-44

6000

Passing Analysis

Category:
Athletes Passed
1479
Passed By
6078
Net Change
-4599
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12167
5K → 10K79549+746#12167#11421
10K → 15K49747-698#11421#12119
15K → 20K271456-1429#12119#13548
20K → Half2049-29#13548#13577
Half → 25K84486-402#13577#13979
25K → 30K143570-427#13979#14406
30K → 20M39529-490#14406#14896
20M → 21M87202-115#14896#15011
21M → 35K4729-725#15011#15736
35K → 23M20770-750#15736#16486
23M → 24M57120-63#16486#16549
24M → 40K34276-242#16549#16791
40K → 25.2M2545-20#16791#16811
25.2M → Finish9550+45#16811#16766
TOTALS14796078-4599
📊

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