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BOSTON MARATHON 2025

Isabella Day

Bib: 16188•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 26%
Gender (Female)
#0 / 12228
Top 9%
Division (F18-39)
#0 / 5469
Top 17%
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
7:21/mi
22:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:17/mi
45:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:15/mi
1:07:59
↑ 67↓ 78
20K· 12.43 mi
7:13/mi
1:30:24
↑ 106↓ 860.1%
Half· 13.11 mi
7:08/mi
1:35:16
↑ 19↓ 370.5%
25K· 15.53 mi
7:06/mi
1:52:29
↑ 66↓ 880.2%
30K· 18.64 mi
7:19/mi
2:15:14
↑ 181↓ 1480.2%
20M
7:16/mi
2:25:07
↑ 64↓ 500.2%
21M
7:32/mi
2:32:39
↑ 106↓ 241.6%
35K· 21.75 mi
7:10/mi
2:38:01
↑ 17↓ 861.7%
23M
7:32/mi
2:47:27
↑ 23↓ 630.6%
24M
7:17/mi
2:54:44
↓ 821.3%
40K· 24.85 mi
7:29/mi
3:01:08
↓ 200.3%
25.2M
7:47/mi
3:03:49
↑ 13↓ 160.2%
Finish· 26.22 mi
7:10/mi
3:11:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:35:16
Pace7:16 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:35:51
Pace7:19 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:3522:507:2122:50
7:21
-
10K
6.21 mi11:20:1445:297:1922:39
7:17
-0:04
15K
9.32 mi11:42:441:07:597:1822:30
7:15
-0:02
20K
12.43 mi12:05:091:30:247:1622:25
7:13
-0:02
Half
13.11 mi12:10:011:35:167:164:52
7:08
-0:05
25K
15.53 mi12:27:141:52:297:1417:13
7:06
-0:02
30K
18.64 mi12:49:592:15:147:1522:45
7:19
+0:13
20M
20.00 mi12:59:522:25:077:159:53
7:16
-0:03
21M
21.00 mi13:07:242:32:397:167:32
7:32
+0:16
35K
21.75 mi13:12:462:38:017:165:22
7:10
-0:22
23M
23.00 mi13:22:122:47:277:179:26
7:32
+0:22
24M
24.00 mi13:29:292:54:447:177:17
7:17
-0:15
40K
24.85 mi13:35:533:01:087:176:24
7:29
+0:12
25.2M
25.20 mi13:38:343:03:497:182:41
7:47
+0:18
Finish
26.22 mi13:45:523:11:077:187:18
7:10
-0:37

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

7:06 /mi

Average Pace

7:18 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:04

86% of race

Time at Steady Pace

26:03

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:17 /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 mi10:57:3522:507:2122:50
7:21
#10855
10K
6.21 mi11:20:1445:297:1922:39
7:17
#10504
15K
9.32 mi11:42:441:07:597:1822:30
7:15
#10156
20K
12.43 mi12:05:091:30:247:1622:25
7:13
#9639
Half
13.11 mi12:10:011:35:167:164:52
7:08
#9568
25K
15.53 mi12:27:141:52:297:1417:13
7:06
#9033
30K
18.64 mi12:49:592:15:147:1522:45
7:19
#8463
20M
20.00 mi12:59:522:25:077:159:53
7:16
#8181
21M
21.00 mi13:07:242:32:397:167:32
7:32
#7883
35K
21.75 mi13:12:462:38:017:165:22
7:10
#7797
23M
23.00 mi13:22:122:47:277:179:26
7:32
#7676
24M
24.00 mi13:29:292:54:447:177:17
7:17
#7586
40K
24.85 mi13:35:533:01:087:176:24
7:29
#7490
25.2M
25.20 mi13:38:343:03:497:182:41
7:47
#7419
Finish
26.22 mi13:45:523:11:077:187:18
7:10
#7359
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10855220522059490(Top 33%)1642(Top 13%)1642(Top 30%)
10K6.21 mi3.10 mi10504+3512052+1532052+15310271(Top 36%)1946(Top 16%)1946(Top 36%)
15K9.32 mi3.11 mi10156+3481908+1441908+1449490(Top 33%)1642(Top 13%)1642(Top 30%)
20K12.43 mi3.11 mi9639+5171702+2061702+2068337(Top 29%)1243(Top 10%)1243(Top 23%)
Half13.11 mi0.68 mi9568+711679+231679+238590(Top 30%)1311(Top 11%)1311(Top 24%)
25K15.53 mi2.42 mi9033+5351464+2151464+2156996(Top 25%)863(Top 7%)863(Top 16%)
30K18.64 mi3.11 mi8463+5701285+1791285+1796596(Top 23%)874(Top 7%)874(Top 16%)
20M20.00 mi1.36 mi8181+2821204+811204+815649(Top 20%)704(Top 6%)704(Top 13%)
21M21.00 mi1.00 mi7883+2981130+741130+744815(Top 17%)569(Top 5%)569(Top 10%)
35K21.75 mi0.75 mi7797+861122+81122+86477(Top 23%)1093(Top 9%)1093(Top 20%)
23M23.00 mi1.25 mi7676+1211125-31125-36842(Top 24%)1325(Top 11%)1325(Top 24%)
24M24.00 mi1.00 mi7586+901122+31122+36340(Top 22%)1198(Top 10%)1198(Top 22%)
40K24.85 mi0.85 mi7490+961126-41126-46753(Top 24%)1440(Top 12%)1440(Top 26%)
25.2M25.20 mi0.35 mi7419+711111+151111+154866(Top 17%)833(Top 7%)833(Top 15%)
Finish26.22 mi1.02 mi7359+601113-21113-26834(Top 24%)1579(Top 13%)1579(Top 29%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

9490

Females

1642

F18-39

1642

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

10271

Females

1946

F18-39

1946

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

9490

Females

1642

F18-39

1642

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

8337

Females

1243

F18-39

1243

20K→Half

12.4 - 13.1 mi

Top 30%
×2story building
+19ft-37ft

Overall

8590

Females

1311

F18-39

1311

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6996

Females

863

F18-39

863

25K→30K

15.5 - 18.6 mi

Top 23%
×9story building
+181ft-148ft

Overall

6596

Females

874

F18-39

874

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5649

Females

704

F18-39

704

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4815

Females

569

F18-39

569

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6477

Females

1093

F18-39

1093

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6842

Females

1325

F18-39

1325

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

6340

Females

1198

F18-39

1198

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6753

Females

1440

F18-39

1440

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4866

Females

833

F18-39

833

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6834

Females

1579

F18-39

1579

Passing Analysis

Category:
Athletes Passed
3827*
Passed By
331
Net Change
+3496
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10855
5K → 10K468117+351#10855#10504
10K → 15K38638+348#10504#10156
15K → 20K526*9+517#10156#9639
20K → Half8110+71#9639#9568
Half → 25K5383+535#9568#9033
25K → 30K58313+570#9033#8463
30K → 20M2864+282#8463#8181
20M → 21M3002+298#8181#7883
21M → 35K10216+86#7883#7797
35K → 23M15635+121#7797#7676
23M → 24M11121+90#7676#7586
24M → 40K11923+96#7586#7490
40K → 25.2M765+71#7490#7419
25.2M → Finish9535+60#7419#7359
TOTALS3827*331+3496

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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