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BOSTON MARATHON 2025

Paula Casallas

Bib: 23126•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 40%
Division (F45-49)
#0 / 1813
Top 50%
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
8:36/mi
26:42
↑ 97↓ 3451.5%
10K· 6.21 mi
8:53/mi
54:18
↑ 79↓ 1380.4%
15K· 9.32 mi
8:25/mi
1:20:26
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:46:39
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:52:16
↑ 19↓ 370.5%
25K· 15.53 mi
8:24/mi
2:12:38
↑ 66↓ 880.2%
30K· 18.64 mi
8:40/mi
2:39:34
↑ 181↓ 1480.2%
20M
8:47/mi
2:51:30
↑ 64↓ 500.2%
21M
9:35/mi
3:01:05
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
3:07:07
↑ 17↓ 861.7%
23M
8:24/mi
3:17:38
↑ 23↓ 630.6%
24M
8:23/mi
3:26:01
↓ 821.3%
40K· 24.85 mi
8:40/mi
3:33:26
↓ 200.3%
25.2M
9:43/mi
3:36:47
↑ 13↓ 160.2%
Finish· 26.22 mi
8:31/mi
3:45:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:52:16
Pace8:34 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:53:12
Pace8:38 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:5026:428:3626:42
8:36
-
10K
6.21 mi11:50:2654:188:4427:36
8:53
+0:17
15K
9.32 mi12:16:341:20:268:3826:08
8:25
-0:28
20K
12.43 mi12:42:471:46:398:3526:13
8:26
+0:01
Half
13.11 mi12:48:241:52:168:345:37
8:14
-0:12
25K
15.53 mi13:08:462:12:388:3220:22
8:24
+0:10
30K
18.64 mi13:35:422:39:348:3426:56
8:40
+0:16
20M
20.00 mi13:47:382:51:308:3411:56
8:47
+0:07
21M
21.00 mi13:57:133:01:058:379:35
9:35
+0:48
35K
21.75 mi14:03:153:07:078:366:02
8:04
-1:31
23M
23.00 mi14:13:463:17:388:3610:31
8:24
+0:20
24M
24.00 mi14:22:093:26:018:358:23
8:23
-0:01
40K
24.85 mi14:29:343:33:268:357:25
8:40
+0:17
25.2M
25.20 mi14:32:553:36:478:363:21
9:43
+1:03
Finish
26.22 mi14:41:363:45:288:368:41
8:31
-1:12

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

8:04 /mi

Average Pace

8:36 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

11:39

5% of race

Time at Steady Pace

2:41:21

72% of race

Time at Slower Pace

52:28

23% of race

Average Pace: 8:36 /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 mi11:22:5026:428:3626:42
8:36
#20424
10K
6.21 mi11:50:2654:188:4427:36
8:53
#21098
15K
9.32 mi12:16:341:20:268:3826:08
8:25
#20361
20K
12.43 mi12:42:471:46:398:3526:13
8:26
#19778
Half
13.11 mi12:48:241:52:168:345:37
8:14
#19664
25K
15.53 mi13:08:462:12:388:3220:22
8:24
#19151
30K
18.64 mi13:35:422:39:348:3426:56
8:40
#18506
20M
20.00 mi13:47:382:51:308:3411:56
8:47
#18262
21M
21.00 mi13:57:133:01:058:379:35
9:35
#18153
35K
21.75 mi14:03:153:07:078:366:02
8:04
#17960
23M
23.00 mi14:13:463:17:388:3610:31
8:24
#17624
24M
24.00 mi14:22:093:26:018:358:23
8:23
#17447
40K
24.85 mi14:29:343:33:268:357:25
8:40
#17321
25.2M
25.20 mi14:32:553:36:478:363:21
9:43
#17293
Finish
26.22 mi14:41:363:45:288:368:41
8:31
#17259
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi204247756775618780(Top 66%)6770(Top 55%)6770(Top 373%)
10K6.21 mi3.10 mi21098-6748105-3498105-34921829(Top 77%)8498(Top 69%)8498(Top 469%)
15K9.32 mi3.11 mi20361+7377676+4297676+42918780(Top 66%)6770(Top 55%)6770(Top 373%)
20K12.43 mi3.11 mi19778+5837349+3277349+32717805(Top 63%)6229(Top 51%)6229(Top 344%)
Half13.11 mi0.68 mi19664+1147286+637286+6317539(Top 62%)6065(Top 50%)6065(Top 335%)
25K15.53 mi2.42 mi19151+5136997+2896997+28916597(Top 58%)5633(Top 46%)5633(Top 311%)
30K18.64 mi3.11 mi18506+6456662+3356662+33515835(Top 56%)5365(Top 44%)5365(Top 296%)
20M20.00 mi1.36 mi18262+2446562+1006562+10015589(Top 55%)5358(Top 44%)5358(Top 296%)
21M21.00 mi1.00 mi18153+1096526+366526+3616481(Top 58%)5969(Top 49%)5969(Top 329%)
35K21.75 mi0.75 mi17960+1936424+1026424+10212765(Top 45%)4048(Top 33%)4048(Top 223%)
23M23.00 mi1.25 mi17624+3366292+1326292+13212738(Top 45%)4136(Top 34%)4136(Top 228%)
24M24.00 mi1.00 mi17447+1776217+756217+7513811(Top 49%)4734(Top 39%)4734(Top 261%)
40K24.85 mi0.85 mi17321+1266168+496168+4914515(Top 51%)5260(Top 43%)5260(Top 290%)
25.2M25.20 mi0.35 mi17293+286163+56163+515754(Top 55%)5965(Top 49%)5965(Top 329%)
Finish26.22 mi1.02 mi17259+346162+16162+116377(Top 58%)6237(Top 51%)6237(Top 344%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18780

Females

6770

F45-49

6770

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

21829

Females

8498

F45-49

8498

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18780

Females

6770

F45-49

6770

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

17805

Females

6229

F45-49

6229

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17539

Females

6065

F45-49

6065

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16597

Females

5633

F45-49

5633

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15835

Females

5365

F45-49

5365

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15589

Females

5358

F45-49

5358

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

16481

Females

5969

F45-49

5969

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12765

Females

4048

F45-49

4048

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12738

Females

4136

F45-49

4136

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13811

Females

4734

F45-49

4734

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14515

Females

5260

F45-49

5260

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15754

Females

5965

F45-49

5965

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

16377

Females

6237

F45-49

6237

Passing Analysis

Category:
Athletes Passed
4116
Passed By
951
Net Change
+3165
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20424
5K → 10K67741-674#20424#21098
10K → 15K75215+737#21098#20361
15K → 20K59411+583#20361#19778
20K → Half1173+114#19778#19664
Half → 25K52310+513#19664#19151
25K → 30K65712+645#19151#18506
30K → 20M25713+244#18506#18262
20M → 21M15950+109#18262#18153
21M → 35K1941+193#18153#17960
35K → 23M3415+336#17960#17624
23M → 24M1858+177#17624#17447
24M → 40K14216+126#17447#17321
40K → 25.2M4517+28#17321#17293
25.2M → Finish8349+34#17293#17259
TOTALS4116951+3165
📊

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