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BOSTON MARATHON 2025

Brandy Zimmer

Bib: 18961•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 44%
Gender (Female)
#0 / 12228
Top 29%
Masters (Masters Women)
#0 / 6759
Top 14%
Division (F40-44)
#0 / 1718
Top 30%
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
7:54/mi
24:32
↑ 97↓ 3451.5%
10K· 6.21 mi
7:57/mi
49:13
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:13:25
↑ 67↓ 78
20K· 12.43 mi
7:47/mi
1:37:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:42:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:50/mi
2:01:48
↑ 66↓ 880.2%
30K· 18.64 mi
8:01/mi
2:26:41
↑ 181↓ 1480.2%
20M
8:01/mi
2:37:35
↑ 64↓ 500.2%
21M
8:24/mi
2:45:59
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:51:47
↑ 17↓ 861.7%
23M
8:09/mi
3:01:59
↑ 23↓ 630.6%
24M
8:03/mi
3:10:02
↓ 821.3%
40K· 24.85 mi
8:09/mi
3:17:00
↓ 200.3%
25.2M
9:02/mi
3:20:07
↑ 13↓ 160.2%
Finish· 26.22 mi
7:52/mi
3:28:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:48
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:45:20
Pace8:02 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:3424:327:5424:32
7:54
-
10K
6.21 mi11:40:1549:137:5524:41
7:57
+0:03
15K
9.32 mi12:04:271:13:257:5324:12
7:47
-0:10
20K
12.43 mi12:28:371:37:357:5124:10
7:47
0:00
Half
13.11 mi12:33:501:42:487:505:13
7:39
-0:08
25K
15.53 mi12:52:502:01:487:5019:00
7:50
+0:11
30K
18.64 mi13:17:432:26:417:5224:53
8:01
+0:11
20M
20.00 mi13:28:372:37:357:5310:54
8:01
0:00
21M
21.00 mi13:37:012:45:597:548:24
8:24
+0:23
35K
21.75 mi13:42:492:51:477:545:48
7:45
-0:39
23M
23.00 mi13:53:013:01:597:5510:12
8:09
+0:24
24M
24.00 mi14:01:043:10:027:558:03
8:03
-0:06
40K
24.85 mi14:08:023:17:007:566:58
8:09
+0:06
25.2M
25.20 mi14:11:093:20:077:563:07
9:02
+0:53
Finish
26.22 mi14:19:103:28:087:578:01
7:52
-1:10

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

7:39 /mi

Average Pace

7:57 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:25:01

99% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

3:07

1% of race

Average Pace: 7:56 /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 mi11:15:3424:327:5424:32
7:54
#15657
10K
6.21 mi11:40:1549:137:5524:41
7:57
#15878
15K
9.32 mi12:04:271:13:257:5324:12
7:47
#15305
20K
12.43 mi12:28:371:37:357:5124:10
7:47
#14683
Half
13.11 mi12:33:501:42:487:505:13
7:39
#14587
25K
15.53 mi12:52:502:01:487:5019:00
7:50
#14228
30K
18.64 mi13:17:432:26:417:5224:53
8:01
#13632
20M
20.00 mi13:28:372:37:357:5310:54
8:01
#13366
21M
21.00 mi13:37:012:45:597:548:24
8:24
#13121
35K
21.75 mi13:42:492:51:477:545:48
7:45
#13020
23M
23.00 mi13:53:013:01:597:5510:12
8:09
#12854
24M
24.00 mi14:01:043:10:027:558:03
8:03
#12786
40K
24.85 mi14:08:023:17:007:566:58
8:09
#12699
25.2M
25.20 mi14:11:093:20:077:563:07
9:02
#12684
Finish
26.22 mi14:19:103:28:087:578:01
7:52
#12633
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi156574924492414287(Top 50%)4190(Top 34%)4190(Top 244%)
10K6.21 mi3.10 mi15878-2215064-1405064-14016031(Top 56%)5132(Top 42%)5132(Top 299%)
15K9.32 mi3.11 mi15305+5734733+3314733+33114287(Top 50%)4190(Top 34%)4190(Top 244%)
20K12.43 mi3.11 mi14683+6224396+3374396+33713097(Top 46%)3601(Top 29%)3601(Top 210%)
Half13.11 mi0.68 mi14587+964338+584338+5813027(Top 46%)3513(Top 29%)3513(Top 204%)
25K15.53 mi2.42 mi14228+3594172+1664172+16612652(Top 45%)3476(Top 28%)3476(Top 202%)
30K18.64 mi3.11 mi13632+5963898+2743898+27411460(Top 40%)3015(Top 25%)3015(Top 175%)
20M20.00 mi1.36 mi13366+2663783+1153783+11510617(Top 37%)2755(Top 23%)2755(Top 160%)
21M21.00 mi1.00 mi13121+2453673+1103673+1109889(Top 35%)2573(Top 21%)2573(Top 150%)
35K21.75 mi0.75 mi13020+1013632+413632+4110535(Top 37%)2886(Top 24%)2886(Top 168%)
23M23.00 mi1.25 mi12854+1663585+473585+4711059(Top 39%)3261(Top 27%)3261(Top 190%)
24M24.00 mi1.00 mi12786+683578+73578+711615(Top 41%)3630(Top 30%)3630(Top 211%)
40K24.85 mi0.85 mi12699+873562+163562+1611250(Top 40%)3534(Top 29%)3534(Top 206%)
25.2M25.20 mi0.35 mi12684+153566-43566-412056(Top 42%)3997(Top 33%)3997(Top 233%)
Finish26.22 mi1.02 mi12633+513569-33569-311955(Top 42%)3903(Top 32%)3903(Top 227%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14287

Females

4190

F40-44

4190

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

16031

Females

5132

F40-44

5132

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14287

Females

4190

F40-44

4190

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

13097

Females

3601

F40-44

3601

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13027

Females

3513

F40-44

3513

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12652

Females

3476

F40-44

3476

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

11460

Females

3015

F40-44

3015

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

10617

Females

2755

F40-44

2755

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9889

Females

2573

F40-44

2573

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10535

Females

2886

F40-44

2886

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11059

Females

3261

F40-44

3261

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11615

Females

3630

F40-44

3630

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11250

Females

3534

F40-44

3534

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

12056

Females

3997

F40-44

3997

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11955

Females

3903

F40-44

3903

Passing Analysis

Category:
Athletes Passed
3748
Passed By
724
Net Change
+3024
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15657
5K → 10K226447-221#15657#15878
10K → 15K59825+573#15878#15305
15K → 20K6275+622#15305#14683
20K → Half1015+96#14683#14587
Half → 25K37617+359#14587#14228
25K → 30K61721+596#14228#13632
30K → 20M28014+266#13632#13366
20M → 21M25712+245#13366#13121
21M → 35K1087+101#13121#13020
35K → 23M19226+166#13020#12854
23M → 24M11446+68#12854#12786
24M → 40K11225+87#12786#12699
40K → 25.2M4126+15#12699#12684
25.2M → Finish9948+51#12684#12633
TOTALS3748724+3024
📊

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