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BOSTON MARATHON 2025

Hannah Brennan

Bib: 18003•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 37%
Gender (Female)
#0 / 12228
Top 20%
Division (F18-39)
#0 / 5469
Top 35%
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
7:11/mi
22:19
↑ 97↓ 3451.5%
10K· 6.21 mi
7:16/mi
44:53
↑ 79↓ 1380.4%
15K· 9.32 mi
7:24/mi
1:07:51
↑ 67↓ 78
20K· 12.43 mi
7:35/mi
1:31:24
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:36:24
↑ 19↓ 370.5%
25K· 15.53 mi
7:41/mi
1:55:01
↑ 66↓ 880.2%
30K· 18.64 mi
7:58/mi
2:19:46
↑ 181↓ 1480.2%
20M
8:06/mi
2:30:46
↑ 64↓ 500.2%
21M
8:44/mi
2:39:30
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:45:11
↑ 17↓ 861.7%
23M
8:03/mi
2:55:16
↑ 23↓ 630.6%
24M
7:51/mi
3:03:07
↓ 821.3%
40K· 24.85 mi
7:57/mi
3:09:55
↓ 200.3%
25.2M
8:56/mi
3:13:00
↑ 13↓ 160.2%
Finish· 26.22 mi
8:02/mi
3:21:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:24
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:44:47
Pace8:00 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4722:197:1122:19
7:11
-
10K
6.21 mi11:37:2144:537:1322:34
7:16
+0:05
15K
9.32 mi12:00:191:07:517:1722:58
7:24
+0:08
20K
12.43 mi12:23:521:31:247:2123:33
7:35
+0:11
Half
13.11 mi12:28:521:36:247:215:00
7:20
-0:15
25K
15.53 mi12:47:291:55:017:2418:37
7:41
+0:21
30K
18.64 mi13:12:142:19:467:3024:45
7:58
+0:17
20M
20.00 mi13:23:142:30:467:3211:00
8:06
+0:08
21M
21.00 mi13:31:582:39:307:368:44
8:44
+0:38
35K
21.75 mi13:37:392:45:117:365:41
7:36
-1:08
23M
23.00 mi13:47:442:55:167:3710:05
8:03
+0:27
24M
24.00 mi13:55:353:03:077:387:51
7:51
-0:12
40K
24.85 mi14:02:233:09:557:386:48
7:57
+0:06
25.2M
25.20 mi14:05:283:13:007:403:05
8:56
+0:59
Finish
26.22 mi14:13:393:21:117:418:11
8:02
-0:54

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

7:11 /mi

Average Pace

7:41 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:05

51% of race

Time at Steady Pace

1:16:17

38% of race

Time at Slower Pace

22:49

11% of race

Average Pace: 7:40 /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 mi11:14:4722:197:1122:19
7:11
#9336
10K
6.21 mi11:37:2144:537:1322:34
7:16
#9665
15K
9.32 mi12:00:191:07:517:1722:58
7:24
#10044
20K
12.43 mi12:23:521:31:247:2123:33
7:35
#10358
Half
13.11 mi12:28:521:36:247:215:00
7:20
#10336
25K
15.53 mi12:47:291:55:017:2418:37
7:41
#10493
30K
18.64 mi13:12:142:19:467:3024:45
7:58
#10571
20M
20.00 mi13:23:142:30:467:3211:00
8:06
#10590
21M
21.00 mi13:31:582:39:307:368:44
8:44
#10641
35K
21.75 mi13:37:392:45:117:365:41
7:36
#10570
23M
23.00 mi13:47:442:55:167:3710:05
8:03
#10518
24M
24.00 mi13:55:353:03:077:387:51
7:51
#10478
40K
24.85 mi14:02:233:09:557:386:48
7:57
#10415
25.2M
25.20 mi14:05:283:13:007:403:05
8:56
#10414
Finish
26.22 mi14:13:393:21:117:418:11
8:02
#10492
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi93361525152510821(Top 38%)2284(Top 19%)2284(Top 42%)
10K6.21 mi3.10 mi9665-3291650-1251650-12510055(Top 35%)1856(Top 15%)1856(Top 34%)
15K9.32 mi3.11 mi10044-3791863-2131863-21310821(Top 38%)2284(Top 19%)2284(Top 42%)
20K12.43 mi3.11 mi10358-3142034-1712034-17111438(Top 40%)2703(Top 22%)2703(Top 49%)
Half13.11 mi0.68 mi10336+222034203410349(Top 36%)2129(Top 17%)2129(Top 39%)
25K15.53 mi2.42 mi10493-1572127-932127-9311377(Top 40%)2781(Top 23%)2781(Top 51%)
30K18.64 mi3.11 mi10571-782241-1142241-11411149(Top 39%)2859(Top 23%)2859(Top 52%)
20M20.00 mi1.36 mi10590-192299-582299-5811084(Top 39%)2981(Top 24%)2981(Top 55%)
21M21.00 mi1.00 mi10641-512364-652364-6511892(Top 42%)3529(Top 29%)3529(Top 65%)
35K21.75 mi0.75 mi10570+712346+182346+189366(Top 33%)2307(Top 19%)2307(Top 42%)
23M23.00 mi1.25 mi10518+522358-122358-1210439(Top 37%)2962(Top 24%)2962(Top 54%)
24M24.00 mi1.00 mi10478+402375-172375-1710206(Top 36%)2901(Top 24%)2901(Top 53%)
40K24.85 mi0.85 mi10415+632377-22377-29877(Top 35%)2857(Top 23%)2857(Top 52%)
25.2M25.20 mi0.35 mi10414+12394-172394-1711496(Top 40%)3733(Top 31%)3733(Top 68%)
Finish26.22 mi1.02 mi10492-782469-752469-7513081(Top 46%)4469(Top 37%)4469(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10821

Females

2284

F18-39

2284

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

10055

Females

1856

F18-39

1856

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10821

Females

2284

F18-39

2284

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11438

Females

2703

F18-39

2703

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

10349

Females

2129

F18-39

2129

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11377

Females

2781

F18-39

2781

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

11149

Females

2859

F18-39

2859

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11084

Females

2981

F18-39

2981

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11892

Females

3529

F18-39

3529

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9366

Females

2307

F18-39

2307

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

10439

Females

2962

F18-39

2962

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10206

Females

2901

F18-39

2901

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9877

Females

2857

F18-39

2857

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11496

Females

3733

F18-39

3733

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

13081

Females

4469

F18-39

4469

Passing Analysis

Category:
Athletes Passed
1344
Passed By
2495
Net Change
-1156
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9336
5K → 10K117445-329#9336#9665
10K → 15K67444-379#9665#10044
15K → 20K93406-314#10044#10358
20K → Half4220+22#10358#10336
Half → 25K117274-157#10336#10493
25K → 30K207284-78#10493#10571
30K → 20M112131-19#10571#10590
20M → 21M91142-51#10590#10641
21M → 35K8918+71#10641#10570
35K → 23M12371+52#10570#10518
23M → 24M9959+40#10518#10478
24M → 40K10239+63#10478#10415
40K → 25.2M3029+1#10415#10414
25.2M → Finish55133-78#10414#10492
TOTALS13442495-1156
📊

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