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BOSTON MARATHON 2025

Catherine Leblanc

Bib: 6100•F

QC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Female)
#0 / 12228
Top 0.8%
Division (F18-39)
#0 / 5469
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:28
Rank: #4514
Start → 5K
20:28 | 6:35/mi
10K· 6.21 mi
40:34
Rank: #3983 (+531)
5K → 10K
20:06 | 6:28/mi
15K· 9.32 mi
1:00:30
Rank: #3633 (+350)
10K → 15K
19:56 | 6:25/mi
20K· 12.43 mi
1:20:35
Rank: #3400 (+233)
15K → 20K
20:05 | 6:28/mi
Half· 13.11 mi
1:24:53
Rank: #3336 (+64)
20K → Half
4:18 | 6:18/mi
25K· 15.53 mi
1:40:43
Rank: #3279 (+57)
Half → 25K
15:50 | 6:32/mi
30K· 18.64 mi
2:00:41
Rank: #2881 (+398)
25K → 30K
19:58 | 6:26/mi
20M
2:09:24
Rank: #2694 (+187)
30K → 20M
8:43 | 6:25/mi
21M
2:16:05
Rank: #2552 (+142)
20M → 21M
6:41 | 6:41/mi
35K· 21.75 mi
2:20:43
Rank: #2470 (+82)
21M → 35K
4:38 | 6:12/mi
23M
2:28:39
Rank: #2331 (+139)
35K → 23M
7:56 | 6:20/mi
24M
2:34:50
Rank: #2221 (+110)
23M → 24M
6:11 | 6:11/mi
40K· 24.85 mi
2:40:11
Rank: #2124 (+97)
24M → 40K
5:21 | 6:15/mi
25.2M
2:42:31
Rank: #2089 (+35)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:48:41
Rank: #2009 (+80)
25.2M → Finish
6:10 | 6:03/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:24:53
Pace6:28 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:23:48
Pace6:24 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4620:286:3520:28
6:35
-
10K
6.21 mi10:45:5240:346:3220:06
6:28
-0:07
15K
9.32 mi11:05:481:00:306:2919:56
6:25
-0:03
20K
12.43 mi11:25:531:20:356:2920:05
6:28
+0:03
Half
13.11 mi11:30:111:24:536:284:18
6:18
-0:10
25K
15.53 mi11:46:011:40:436:2915:50
6:32
+0:14
30K
18.64 mi12:05:592:00:416:2819:58
6:26
-0:06
20M
20.00 mi12:14:422:09:246:288:43
6:25
-0:01
21M
21.00 mi12:21:232:16:056:296:41
6:41
+0:16
35K
21.75 mi12:26:012:20:436:284:38
6:12
-0:29
23M
23.00 mi12:33:572:28:396:287:56
6:20
+0:08
24M
24.00 mi12:40:082:34:506:276:11
6:11
-0:09
40K
24.85 mi12:45:292:40:116:275:21
6:15
+0:04
25.2M
25.20 mi12:47:492:42:316:272:20
6:46
+0:31
Finish
26.22 mi12:53:592:48:416:266:10
6:03
-0:43

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

6:03 /mi

Average Pace

6:26 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:40

95% of race

Time at Steady Pace

9:01

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:26 /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 mi10:25:4620:286:3520:28
6:35
#4514
10K
6.21 mi10:45:5240:346:3220:06
6:28
#3983
15K
9.32 mi11:05:481:00:306:2919:56
6:25
#3633
20K
12.43 mi11:25:531:20:356:2920:05
6:28
#3400
Half
13.11 mi11:30:111:24:536:284:18
6:18
#3336
25K
15.53 mi11:46:011:40:436:2915:50
6:32
#3279
30K
18.64 mi12:05:592:00:416:2819:58
6:26
#2881
20M
20.00 mi12:14:422:09:246:288:43
6:25
#2694
21M
21.00 mi12:21:232:16:056:296:41
6:41
#2552
35K
21.75 mi12:26:012:20:436:284:38
6:12
#2470
23M
23.00 mi12:33:572:28:396:287:56
6:20
#2331
24M
24.00 mi12:40:082:34:506:276:11
6:11
#2221
40K
24.85 mi12:45:292:40:116:275:21
6:15
#2124
25.2M
25.20 mi12:47:492:42:316:272:20
6:46
#2089
Finish
26.22 mi12:53:592:48:416:266:10
6:03
#2009
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi45142622623052(Top 11%)137(Top 1%)137(Top 3%)
10K6.21 mi3.10 mi3983+531210+52210+523528(Top 12%)179(Top 1%)179(Top 3%)
15K9.32 mi3.11 mi3633+350187+23187+233052(Top 11%)137(Top 1%)137(Top 3%)
20K12.43 mi3.11 mi3400+233167+20167+202918(Top 10%)131(Top 1%)131(Top 2%)
Half13.11 mi0.68 mi3336+64159+8159+82595(Top 9%)105(Top 0.9%)105(Top 2%)
25K15.53 mi2.42 mi3279+57153+6153+63064(Top 11%)148(Top 1%)148(Top 3%)
30K18.64 mi3.11 mi2881+398130+23130+231669(Top 6%)80(Top 0.7%)80(Top 1%)
20M20.00 mi1.36 mi2694+187122+8122+81309(Top 5%)67(Top 0.5%)67(Top 1%)
21M21.00 mi1.00 mi2552+142112+10112+101175(Top 4%)59(Top 0.5%)59(Top 1%)
35K21.75 mi0.75 mi2470+82110+2110+21232(Top 4%)64(Top 0.5%)64(Top 1%)
23M23.00 mi1.25 mi2331+139102+8102+8982(Top 3%)52(Top 0.4%)52(Top 1.0%)
24M24.00 mi1.00 mi2221+110101+1101+1998(Top 4%)56(Top 0.5%)56(Top 1%)
40K24.85 mi0.85 mi2124+97100+1100+1889(Top 3%)52(Top 0.4%)52(Top 1.0%)
25.2M25.20 mi0.35 mi2089+35100100939(Top 3%)68(Top 0.6%)68(Top 1%)
Finish26.22 mi1.02 mi2009+8098+298+21079(Top 4%)62(Top 0.5%)62(Top 1%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3052

Females

137

F18-39

137

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3528

Females

179

F18-39

179

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3052

Females

137

F18-39

137

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2918

Females

131

F18-39

131

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2595

Females

105

F18-39

105

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3064

Females

148

F18-39

148

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1669

Females

80

F18-39

80

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1309

Females

67

F18-39

67

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1175

Females

59

F18-39

59

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1232

Females

64

F18-39

64

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

982

Females

52

F18-39

52

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

998

Females

56

F18-39

56

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

889

Females

52

F18-39

52

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

939

Females

68

F18-39

68

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1079

Females

62

F18-39

62

Passing Analysis

Category:
Athletes Passed
2602
Passed By
97
Net Change
+2505
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4514
5K → 10K55322+531#4514#3983
10K → 15K3555+350#3983#3633
15K → 20K24411+233#3633#3400
20K → Half651+64#3400#3336
Half → 25K9841+57#3336#3279
25K → 30K4024+398#3279#2881
30K → 20M1881+187#2881#2694
20M → 21M1431+142#2694#2552
21M → 35K820+82#2552#2470
35K → 23M1401+139#2470#2331
23M → 24M1122+110#2331#2221
24M → 40K981+97#2221#2124
40K → 25.2M383+35#2124#2089
25.2M → Finish844+80#2089#2009
TOTALS260297+2505
📊

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