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BOSTON MARATHON 2025

Mo Casten

Bib: 17980•F

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 45%
Gender (Female)
#0 / 12228
Top 30%
Masters (Masters Women)
#0 / 6759
Top 15%
Division (F45-49)
#0 / 1813
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
7:50/mi
24:19
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
48:37
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:12:47
↑ 67↓ 78
20K· 12.43 mi
7:44/mi
1:36:48
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:42:05
↑ 19↓ 370.5%
25K· 15.53 mi
7:48/mi
2:00:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:10/mi
2:26:22
↑ 181↓ 1480.2%
20M
8:09/mi
2:37:26
↑ 64↓ 500.2%
21M
8:37/mi
2:46:03
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:51:55
↑ 17↓ 861.7%
23M
8:04/mi
3:02:01
↑ 23↓ 630.6%
24M
8:02/mi
3:10:03
↓ 821.3%
40K· 24.85 mi
8:12/mi
3:17:04
↓ 200.3%
25.2M
9:17/mi
3:20:16
↑ 13↓ 160.2%
Finish· 26.22 mi
8:13/mi
3:28:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:05
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:46:33
Pace8:08 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2924:197:5024:19
7:50
-
10K
6.21 mi11:38:4748:377:4924:18
7:49
-0:01
15K
9.32 mi12:02:571:12:477:4924:10
7:47
-0:02
20K
12.43 mi12:26:581:36:487:4724:01
7:44
-0:03
Half
13.11 mi12:32:151:42:057:475:17
7:45
+0:01
25K
15.53 mi12:51:092:00:597:4718:54
7:48
+0:03
30K
18.64 mi13:16:322:26:227:5125:23
8:10
+0:22
20M
20.00 mi13:27:362:37:267:5211:04
8:09
-0:01
21M
21.00 mi13:36:132:46:037:548:37
8:37
+0:28
35K
21.75 mi13:42:052:51:557:545:52
7:51
-0:46
23M
23.00 mi13:52:113:02:017:5510:06
8:04
+0:13
24M
24.00 mi14:00:133:10:037:558:02
8:02
-0:02
40K
24.85 mi14:07:143:17:047:567:01
8:12
+0:10
25.2M
25.20 mi14:10:263:20:167:573:12
9:17
+1:05
Finish
26.22 mi14:18:483:28:387:588:22
8:13
-1:04

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

7:44 /mi

Average Pace

7:58 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:59

58% of race

Time at Steady Pace

1:15:50

36% of race

Time at Slower Pace

11:49

6% of race

Average Pace: 7:57 /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 mi11:14:2924:197:5024:19
7:50
#15063
10K
6.21 mi11:38:4748:377:4924:18
7:49
#14994
15K
9.32 mi12:02:571:12:477:4924:10
7:47
#14702
20K
12.43 mi12:26:581:36:487:4724:01
7:44
#14169
Half
13.11 mi12:32:151:42:057:475:17
7:45
#14141
25K
15.53 mi12:51:092:00:597:4718:54
7:48
#13794
30K
18.64 mi13:16:322:26:227:5125:23
8:10
#13501
20M
20.00 mi13:27:362:37:267:5211:04
8:09
#13308
21M
21.00 mi13:36:132:46:037:548:37
8:37
#13144
35K
21.75 mi13:42:052:51:557:545:52
7:51
#13055
23M
23.00 mi13:52:113:02:017:5510:06
8:04
#12873
24M
24.00 mi14:00:133:10:037:558:02
8:02
#12791
40K
24.85 mi14:07:143:17:047:567:01
8:12
#12717
25.2M
25.20 mi14:10:263:20:167:573:12
9:17
#12738
Finish
26.22 mi14:18:483:28:387:588:22
8:13
#12797
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi150634565456514187(Top 50%)4126(Top 34%)4126(Top 228%)
10K6.21 mi3.10 mi14994+694545+204545+2015013(Top 53%)4542(Top 37%)4542(Top 251%)
15K9.32 mi3.11 mi14702+2924371+1744371+17414187(Top 50%)4126(Top 34%)4126(Top 228%)
20K12.43 mi3.11 mi14169+5334101+2704101+27012677(Top 45%)3372(Top 28%)3372(Top 186%)
Half13.11 mi0.68 mi14141+284086+154086+1513820(Top 49%)3959(Top 32%)3959(Top 218%)
25K15.53 mi2.42 mi13794+3473926+1603926+16012329(Top 43%)3296(Top 27%)3296(Top 182%)
30K18.64 mi3.11 mi13501+2933818+1083818+10812607(Top 44%)3623(Top 30%)3623(Top 200%)
20M20.00 mi1.36 mi13308+1933748+703748+7011451(Top 40%)3168(Top 26%)3168(Top 175%)
21M21.00 mi1.00 mi13144+1643686+623686+6211232(Top 40%)3212(Top 26%)3212(Top 177%)
35K21.75 mi0.75 mi13055+893655+313655+3111186(Top 39%)3212(Top 26%)3212(Top 177%)
23M23.00 mi1.25 mi12873+1823594+613594+6110549(Top 37%)3024(Top 25%)3024(Top 167%)
24M24.00 mi1.00 mi12791+823583+113583+1111513(Top 41%)3575(Top 29%)3575(Top 197%)
40K24.85 mi0.85 mi12717+743573+103573+1011621(Top 41%)3713(Top 30%)3713(Top 205%)
25.2M25.20 mi0.35 mi12738-213593-203593-2013377(Top 47%)4686(Top 38%)4686(Top 258%)
Finish26.22 mi1.02 mi12797-593650-573650-5714343(Top 50%)5116(Top 42%)5116(Top 282%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14187

Females

4126

F45-49

4126

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

15013

Females

4542

F45-49

4542

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14187

Females

4126

F45-49

4126

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12677

Females

3372

F45-49

3372

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13820

Females

3959

F45-49

3959

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

12329

Females

3296

F45-49

3296

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

12607

Females

3623

F45-49

3623

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

11451

Females

3168

F45-49

3168

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

11232

Females

3212

F45-49

3212

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

11186

Females

3212

F45-49

3212

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

10549

Females

3024

F45-49

3024

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11513

Females

3575

F45-49

3575

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11621

Females

3713

F45-49

3713

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13377

Females

4686

F45-49

4686

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

14343

Females

5116

F45-49

5116

Passing Analysis

Category:
Athletes Passed
3056
Passed By
790
Net Change
+2266
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15063
5K → 10K316247+69#15063#14994
10K → 15K36775+292#14994#14702
15K → 20K54714+533#14702#14169
20K → Half4517+28#14169#14141
Half → 25K37528+347#14141#13794
25K → 30K37481+293#13794#13501
30K → 20M22532+193#13501#13308
20M → 21M19430+164#13308#13144
21M → 35K10011+89#13144#13055
35K → 23M20523+182#13055#12873
23M → 24M12442+82#12873#12791
24M → 40K10733+74#12791#12717
40K → 25.2M2243-21#12717#12738
25.2M → Finish55114-59#12738#12797
TOTALS3056790+2266
📊

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