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BOSTON MARATHON 2025

Isabella Berkley

Bib: 30902•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
27:18
Rank: #21465
Start → 5K
27:18 | 8:47/mi
10K· 6.21 mi
53:15
Rank: #20247 (+1218)
5K → 10K
25:57 | 8:21/mi
15K· 9.32 mi
1:19:13
Rank: #19650 (+597)
10K → 15K
25:58 | 8:21/mi
20K· 12.43 mi
1:45:59
Rank: #19455 (+195)
15K → 20K
26:46 | 8:37/mi
Half· 13.11 mi
1:52:08
Rank: #19605 (-150)
20K → Half
6:09 | 9:01/mi
25K· 15.53 mi
2:15:11
Rank: #20075 (-470)
Half → 25K
23:03 | 9:30/mi
30K· 18.64 mi
2:49:42
Rank: #21349 (-1274)
25K → 30K
34:31 | 11:07/mi
20M
3:07:39
Rank: #22190 (-841)
30K → 20M
17:57 | 13:13/mi
21M
3:23:07
Rank: #22795 (-605)
20M → 21M
15:28 | 15:28/mi
35K· 21.75 mi
3:30:13
Rank: #22691 (+104)
21M → 35K
7:06 | 9:29/mi
23M
3:44:42
Rank: #22809 (-118)
35K → 23M
14:29 | 11:34/mi
24M
3:55:15
Rank: #22788 (+21)
23M → 24M
10:33 | 10:33/mi
40K· 24.85 mi
4:05:11
Rank: #22879 (-91)
24M → 40K
9:56 | 11:37/mi
25.2M
4:09:22
Rank: #22899 (-20)
40K → 25.2M
4:11 | 12:08/mi
Finish· 26.22 mi
4:20:37
Rank: #23019 (-120)
25.2M → Finish
11:15 | 11:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:08
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:28:29
Pace11:20 /mi
📊Positive Split: 32.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5927:188:4727:18
8:47
-
10K
6.21 mi12:17:5653:158:3425:57
8:21
-0:26
15K
9.32 mi12:43:541:19:138:3025:58
8:21
0:00
20K
12.43 mi13:10:401:45:598:3226:46
8:37
+0:16
Half
13.11 mi13:16:491:52:088:336:09
9:01
+0:24
25K
15.53 mi13:39:522:15:118:4223:03
9:30
+0:29
30K
18.64 mi14:14:232:49:429:0634:31
11:07
+1:37
20M
20.00 mi14:32:203:07:399:2317:57
13:13
+2:06
21M
21.00 mi14:47:483:23:079:4015:28
15:28
+2:15
35K
21.75 mi14:54:543:30:139:407:06
9:29
-5:59
23M
23.00 mi15:09:233:44:429:4614:29
11:34
+2:05
24M
24.00 mi15:19:563:55:159:4810:33
10:33
-1:01
40K
24.85 mi15:29:524:05:119:529:56
11:37
+1:04
25.2M
25.20 mi15:34:034:09:229:544:11
12:08
+0:31
Finish
26.22 mi15:45:184:20:379:5711:15
11:02
-1:06

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

8:21 /mi

Average Pace

9:57 /mi

Slowest Pace

15:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:17

55% of race

Time at Steady Pace

56:19

22% of race

Time at Slower Pace

1:02:01

24% of race

Average Pace: 9:56 /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 mi11:51:5927:188:4727:18
8:47
#21465
10K
6.21 mi12:17:5653:158:3425:57
8:21
#20247
15K
9.32 mi12:43:541:19:138:3025:58
8:21
#19650
20K
12.43 mi13:10:401:45:598:3226:46
8:37
#19455
Half
13.11 mi13:16:491:52:088:336:09
9:01
#19605
25K
15.53 mi13:39:522:15:118:4223:03
9:30
#20075
30K
18.64 mi14:14:232:49:429:0634:31
11:07
#21349
20M
20.00 mi14:32:203:07:399:2317:57
13:13
#22190
21M
21.00 mi14:47:483:23:079:4015:28
15:28
#22795
35K
21.75 mi14:54:543:30:139:407:06
9:29
#22691
23M
23.00 mi15:09:233:44:429:4614:29
11:34
#22809
24M
24.00 mi15:19:563:55:159:4810:33
10:33
#22788
40K
24.85 mi15:29:524:05:119:529:56
11:37
#22879
25.2M
25.20 mi15:34:034:09:229:544:11
12:08
#22899
Finish
26.22 mi15:45:184:20:379:5711:15
11:02
#23019
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi214658347834718450(Top 65%)6584(Top 54%)6584(Top 120%)
10K6.21 mi3.10 mi20247+12187623+7247623+72418907(Top 67%)6832(Top 56%)6832(Top 125%)
15K9.32 mi3.11 mi19650+5977265+3587265+35818450(Top 65%)6584(Top 54%)6584(Top 120%)
20K12.43 mi3.11 mi19455+1957158+1077158+10718957(Top 67%)6894(Top 56%)6894(Top 126%)
Half13.11 mi0.68 mi19605-1507250-927250-9221938(Top 77%)8574(Top 70%)8574(Top 157%)
25K15.53 mi2.42 mi20075-4707529-2797529-27921898(Top 77%)8600(Top 70%)8600(Top 157%)
30K18.64 mi3.11 mi21349-12748274-7458274-74524211(Top 85%)9975(Top 82%)9975(Top 182%)
20M20.00 mi1.36 mi22190-8418746-4728746-47226650(Top 94%)11369(Top 93%)11369(Top 208%)
21M21.00 mi1.00 mi22795-6059114-3689114-36827515(Top 97%)11822(Top 97%)11822(Top 216%)
35K21.75 mi0.75 mi22691+1049070+449070+4420341(Top 72%)8165(Top 67%)8165(Top 149%)
23M23.00 mi1.25 mi22809-1189160-909160-9024375(Top 86%)10284(Top 84%)10284(Top 188%)
24M24.00 mi1.00 mi22788+219168-89168-822963(Top 81%)9617(Top 79%)9617(Top 176%)
40K24.85 mi0.85 mi22879-919245-779245-7724337(Top 86%)10343(Top 85%)10343(Top 189%)
25.2M25.20 mi0.35 mi22899-209262-179262-1723514(Top 83%)9917(Top 81%)9917(Top 181%)
Finish26.22 mi1.02 mi23019-1209330-689330-6825453(Top 90%)10885(Top 89%)10885(Top 199%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

18450

Females

6584

F18-39

6584

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

18907

Females

6832

F18-39

6832

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

18450

Females

6584

F18-39

6584

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

18957

Females

6894

F18-39

6894

20K→Half

12.4 - 13.1 mi

Top 77%
×2stories
+19ft-37ft

Overall

21938

Females

8574

F18-39

8574

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

21898

Females

8600

F18-39

8600

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

24211

Females

9975

F18-39

9975

30K→20M

18.6 - 20.0 mi

Top 94%
×5stories
+64ft-50ft

Overall

26650

Females

11369

F18-39

11369

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

27515

Females

11822

F18-39

11822

21M→35K

21.0 - 21.8 mi

Top 72%
×7stories
+17ft-86ft

Overall

20341

Females

8165

F18-39

8165

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

24375

Females

10284

F18-39

10284

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

22963

Females

9617

F18-39

9617

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24337

Females

10343

F18-39

10343

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23514

Females

9917

F18-39

9917

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

25453

Females

10885

F18-39

10885

Passing Analysis

Category:
Athletes Passed
2542
Passed By
4096
Net Change
-1554
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21465
5K → 10K125436+1218#21465#20247
10K → 15K61316+597#20247#19650
15K → 20K299104+195#19650#19455
20K → Half14164-150#19455#19605
Half → 25K52522-470#19605#20075
25K → 30K341308-1274#20075#21349
30K → 20M7848-841#21349#22190
20M → 21M8613-605#22190#22795
21M → 35K1084+104#22795#22691
35K → 23M40158-118#22691#22809
23M → 24M6443+21#22809#22788
24M → 40K23114-91#22788#22879
40K → 25.2M1333-20#22879#22899
25.2M → Finish13133-120#22899#23019
TOTALS25424096-1554
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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