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BOSTON MARATHON 2025

Leah Catlin

MA

Bib: 18519 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 44%
Masters (Masters Women)
#0 / 6759
Top 31%
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:04/mi
25:04
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:58/mi
49:49
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:53/mi
1:14:17
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:08/mi
1:39:32
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:11/mi
1:45:07
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:16/mi
2:05:10
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:48/mi
2:32:29
↑ 181↓ 1480.2%
138 ft elev
20M
8:57/mi
2:44:39
↑ 64↓ 500.2%
148 ft elev
21M
9:18/mi
2:53:57
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:41/mi
3:00:27
↑ 17↓ 861.7%
156 ft elev
23M
8:55/mi
3:11:37
↑ 23↓ 630.6%
116 ft elev
24M
9:03/mi
3:20:40
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:53/mi
3:28:16
↓ 200.3%
20 ft elev
25.2M
10:09/mi
3:31:46
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:25/mi
3:40:21
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:07
Pace8:01 /mi
2nd Half
Distance13.11 mi
Time1:55:14
Pace8:47 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5125:048:0425:04
8:04
-
10K
6.21 mi11:40:3649:498:0124:45
7:58
-0:06
15K
9.32 mi12:05:041:14:177:5824:28
7:53
-0:05
20K
12.43 mi12:30:191:39:328:0125:15
8:08
+0:15
Half
13.11 mi12:35:541:45:078:015:35
8:11
+0:03
25K
15.53 mi12:55:572:05:108:0320:03
8:16
+0:05
30K
18.64 mi13:23:162:32:298:1127:19
8:48
+0:32
20M
20.00 mi13:35:262:44:398:1412:10
8:57
+0:09
21M
21.00 mi13:44:442:53:578:179:18
9:18
+0:21
35K
21.75 mi13:51:143:00:278:186:30
8:41
-0:37
23M
23.00 mi14:02:243:11:378:2011:10
8:55
+0:14
24M
24.00 mi14:11:273:20:408:229:03
9:03
+0:08
40K
24.85 mi14:19:033:28:168:237:36
8:53
-0:10
25.2M
25.20 mi14:22:333:31:468:243:30
10:09
+1:16
Finish
26.22 mi14:31:083:40:218:258:35
8:25
-1:44

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

7:53 /mi

Average Pace

8:25 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:10

57% of race

Time at Steady Pace

1:13:20

33% of race

Time at Slower Pace

21:51

10% of race

Average Pace: 8:24 /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 mi11:15:5125:048:0425:04
8:04
#17146
10K
6.21 mi11:40:3649:498:0124:45
7:58
#16660
15K
9.32 mi12:05:041:14:177:5824:28
7:53
#16085
20K
12.43 mi12:30:191:39:328:0125:15
8:08
#16006
Half
13.11 mi12:35:541:45:078:015:35
8:11
#16083
25K
15.53 mi12:55:572:05:108:0320:03
8:16
#16010
30K
18.64 mi13:23:162:32:298:1127:19
8:48
#16087
20M
20.00 mi13:35:262:44:398:1412:10
8:57
#16090
21M
21.00 mi13:44:442:53:578:179:18
9:18
#15974
35K
21.75 mi13:51:143:00:278:186:30
8:41
#15963
23M
23.00 mi14:02:243:11:378:2011:10
8:55
#15894
24M
24.00 mi14:11:273:20:408:229:03
9:03
#15977
40K
24.85 mi14:19:033:28:168:237:36
8:53
#15943
25.2M
25.20 mi14:22:333:31:468:243:30
10:09
#15975
Finish
26.22 mi14:31:083:40:218:258:35
8:25
#15959
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi171465823582315067(Top 53%)4619(Top 38%)4619(Top 269%)
10K6.21 mi3.10 mi16660+4865530+2935530+29316214(Top 57%)5254(Top 43%)5254(Top 306%)
15K9.32 mi3.11 mi16085+5755187+3435187+34315067(Top 53%)4619(Top 38%)4619(Top 269%)
20K12.43 mi3.11 mi16006+795153+345153+3415855(Top 56%)5134(Top 42%)5134(Top 299%)
Half13.11 mi0.68 mi16083-775202-495202-4917214(Top 61%)5879(Top 48%)5879(Top 342%)
25K15.53 mi2.42 mi16010+735171+315171+3115746(Top 55%)5160(Top 42%)5160(Top 300%)
30K18.64 mi3.11 mi16087-775277-1065277-10616566(Top 58%)5782(Top 47%)5782(Top 337%)
20M20.00 mi1.36 mi16090-35316-395316-3916565(Top 58%)5903(Top 48%)5903(Top 344%)
21M21.00 mi1.00 mi15974+1165286+305286+3015165(Top 53%)5269(Top 43%)5269(Top 307%)
35K21.75 mi0.75 mi15963+115303-175303-1716627(Top 59%)6123(Top 50%)6123(Top 356%)
23M23.00 mi1.25 mi15894+695307-45307-415801(Top 56%)5772(Top 47%)5772(Top 336%)
24M24.00 mi1.00 mi15977-835369-625369-6217618(Top 62%)6823(Top 56%)6823(Top 397%)
40K24.85 mi0.85 mi15943+345370-15370-115718(Top 55%)5902(Top 48%)5902(Top 344%)
25.2M25.20 mi0.35 mi15975-325403-335403-3317702(Top 62%)6954(Top 57%)6954(Top 405%)
Finish26.22 mi1.02 mi15959+165409-65409-615752(Top 55%)5884(Top 48%)5884(Top 342%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

15067

Females

4619

F40-44

4619

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16214

Females

5254

F40-44

5254

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

15067

Females

4619

F40-44

4619

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15855

Females

5134

F40-44

5134

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17214

Females

5879

F40-44

5879

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15746

Females

5160

F40-44

5160

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16566

Females

5782

F40-44

5782

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

16565

Females

5903

F40-44

5903

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

15165

Females

5269

F40-44

5269

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16627

Females

6123

F40-44

6123

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15801

Females

5772

F40-44

5772

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17618

Females

6823

F40-44

6823

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15718

Females

5902

F40-44

5902

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17702

Females

6954

F40-44

6954

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2story building
+22ft-21ft

Overall

15752

Females

5884

F40-44

5884

Passing Analysis

Category:
Athletes Passed
2580
Passed By
1393
Net Change
+1187
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17146
5K → 10K611125+486#17146#16660
10K → 15K59924+575#16660#16085
15K → 20K236157+79#16085#16006
20K → Half1592-77#16006#16083
Half → 25K203130+73#16083#16010
25K → 30K201278-77#16010#16087
30K → 20M113116-3#16087#16090
20M → 21M15943+116#16090#15974
21M → 35K7362+11#15974#15963
35K → 23M14475+69#15963#15894
23M → 24M42125-83#15894#15977
24M → 40K8652+34#15977#15943
40K → 25.2M2355-32#15943#15975
25.2M → Finish7559+16#15975#15959
TOTALS25801393+1187
📊

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