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BOSTON MARATHON 2025

Nuo Zhang

Bib: 14117•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
Masters (Masters Women)
#0 / 6759
Top 28%
Division (F45-49)
#0 / 1813
Top 33%
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
7:30/mi
46:50
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:10:02
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:34:10
↑ 106↓ 860.1%
Half· 13.11 mi
8:05/mi
1:39:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:41/mi
2:00:43
↑ 66↓ 880.2%
30K· 18.64 mi
9:52/mi
2:31:22
↑ 181↓ 1480.2%
20M
9:21/mi
2:44:04
↑ 64↓ 500.2%
21M
10:06/mi
2:54:10
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
3:00:35
↑ 17↓ 861.7%
23M
8:37/mi
3:11:22
↑ 23↓ 630.6%
24M
8:26/mi
3:19:48
↓ 821.3%
40K· 24.85 mi
8:15/mi
3:26:51
↓ 200.3%
25.2M
8:48/mi
3:29:53
↑ 13↓ 160.2%
Finish· 26.22 mi
7:49/mi
3:37:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:41
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:58:10
Pace9:01 /mi
📊Positive Split: 18.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:1623:317:3423:31
7:34
-
10K
6.21 mi11:17:3546:507:3223:19
7:30
-0:04
15K
9.32 mi11:40:471:10:027:3123:12
7:28
-0:02
20K
12.43 mi12:04:551:34:107:3524:08
7:46
+0:18
Half
13.11 mi12:10:261:39:417:365:31
8:05
+0:19
25K
15.53 mi12:31:282:00:437:4621:02
8:41
+0:36
30K
18.64 mi13:02:072:31:228:0730:39
9:52
+1:11
20M
20.00 mi13:14:492:44:048:1212:42
9:21
-0:31
21M
21.00 mi13:24:552:54:108:1810:06
10:06
+0:45
35K
21.75 mi13:31:203:00:358:186:25
8:35
-1:31
23M
23.00 mi13:42:073:11:228:1910:47
8:37
+0:02
24M
24.00 mi13:50:333:19:488:208:26
8:26
-0:11
40K
24.85 mi13:57:363:26:518:197:03
8:15
-0:11
25.2M
25.20 mi14:00:383:29:538:203:02
8:48
+0:33
Finish
26.22 mi14:08:363:37:518:197:58
7:49
-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

8:19 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:08

47% of race

Time at Steady Pace

1:02:16

29% of race

Time at Slower Pace

53:27

25% of race

Average Pace: 8:19 /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 mi10:54:1623:317:3423:31
7:34
#12871
10K
6.21 mi11:17:3546:507:3223:19
7:30
#12470
15K
9.32 mi11:40:471:10:027:3123:12
7:28
#12118
20K
12.43 mi12:04:551:34:107:3524:08
7:46
#12301
Half
13.11 mi12:10:261:39:417:365:31
8:05
#12536
25K
15.53 mi12:31:282:00:437:4621:02
8:41
#13634
30K
18.64 mi13:02:072:31:228:0730:39
9:52
#15659
20M
20.00 mi13:14:492:44:048:1212:42
9:21
#15884
21M
21.00 mi13:24:552:54:108:1810:06
10:06
#16041
35K
21.75 mi13:31:203:00:358:186:25
8:35
#15999
23M
23.00 mi13:42:073:11:228:1910:47
8:37
#15811
24M
24.00 mi13:50:333:19:488:208:26
8:26
#15717
40K
24.85 mi13:57:363:26:518:197:03
8:15
#15571
25.2M
25.20 mi14:00:383:29:538:203:02
8:48
#15490
Finish
26.22 mi14:08:363:37:518:197:58
7:49
#15349
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi128713254325411508(Top 41%)2643(Top 22%)2643(Top 146%)
10K6.21 mi3.10 mi12470+4013053+2013053+20112164(Top 43%)2908(Top 24%)2908(Top 160%)
15K9.32 mi3.11 mi12118+3522904+1492904+14911508(Top 41%)2643(Top 22%)2643(Top 146%)
20K12.43 mi3.11 mi12301-1833032-1283032-12813028(Top 46%)3570(Top 29%)3570(Top 197%)
Half13.11 mi0.68 mi12536-2353169-1373169-13716556(Top 58%)5502(Top 45%)5502(Top 303%)
25K15.53 mi2.42 mi13634-10983836-6673836-66718241(Top 64%)6554(Top 54%)6554(Top 362%)
30K18.64 mi3.11 mi15659-20255028-11925028-119221203(Top 75%)8341(Top 68%)8341(Top 460%)
20M20.00 mi1.36 mi15884-2255206-1785206-17818509(Top 65%)7002(Top 57%)7002(Top 386%)
21M21.00 mi1.00 mi16041-1575324-1185324-11818678(Top 66%)7160(Top 59%)7160(Top 395%)
35K21.75 mi0.75 mi15999+425321+35321+315951(Top 56%)5742(Top 47%)5742(Top 317%)
23M23.00 mi1.25 mi15811+1885255+665255+6614032(Top 49%)4810(Top 39%)4810(Top 265%)
24M24.00 mi1.00 mi15717+945219+365219+3614126(Top 50%)4892(Top 40%)4892(Top 270%)
40K24.85 mi0.85 mi15571+1465168+515168+5111890(Top 42%)3877(Top 32%)3877(Top 214%)
25.2M25.20 mi0.35 mi15490+815132+365132+3610736(Top 38%)3392(Top 28%)3392(Top 187%)
Finish26.22 mi1.02 mi15349+1415074+585074+5811613(Top 41%)3766(Top 31%)3766(Top 208%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11508

Females

2643

F45-49

2643

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

12164

Females

2908

F45-49

2908

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11508

Females

2643

F45-49

2643

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

13028

Females

3570

F45-49

3570

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16556

Females

5502

F45-49

5502

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

18241

Females

6554

F45-49

6554

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

21203

Females

8341

F45-49

8341

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

18509

Females

7002

F45-49

7002

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

18678

Females

7160

F45-49

7160

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15951

Females

5742

F45-49

5742

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

14032

Females

4810

F45-49

4810

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

14126

Females

4892

F45-49

4892

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11890

Females

3877

F45-49

3877

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10736

Females

3392

F45-49

3392

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11613

Females

3766

F45-49

3766

Passing Analysis

Category:
Athletes Passed
2069
Passed By
4547
Net Change
-2478
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12871
5K → 10K524123+401#12871#12470
10K → 15K40553+352#12470#12118
15K → 20K137320-183#12118#12301
20K → Half3238-235#12301#12536
Half → 25K351133-1098#12536#13634
25K → 30K272052-2025#13634#15659
30K → 20M64289-225#15659#15884
20M → 21M67224-157#15884#16041
21M → 35K8543+42#16041#15999
35K → 23M21224+188#15999#15811
23M → 24M11925+94#15811#15717
24M → 40K16014+146#15717#15571
40K → 25.2M865+81#15571#15490
25.2M → Finish1454+141#15490#15349
TOTALS20694547-2478
📊

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