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BOSTON MARATHON 2025

Laurie Knowles

Bib: 173•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 6%
Gender (Female)
#0 / 12228
Top 0.6%
Masters (Masters Women)
#0 / 6759
Top 0.2%
Division (F45-49)
#0 / 1813
Top 0.2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:20
Rank: #799
Start → 5K
18:20 | 5:54/mi
10K· 6.21 mi
37:09
Rank: #1016 (-217)
5K → 10K
18:49 | 6:03/mi
15K· 9.32 mi
56:18
Rank: #1172 (-156)
10K → 15K
19:09 | 6:10/mi
20K· 12.43 mi
1:15:55
Rank: #1373 (-201)
15K → 20K
19:37 | 6:19/mi
Half· 13.11 mi
1:20:10
Rank: #1398 (-25)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:35:34
Rank: #1477 (-79)
Half → 25K
15:24 | 6:21/mi
30K· 18.64 mi
1:55:50
Rank: #1554 (-77)
25K → 30K
20:16 | 6:31/mi
20M
2:04:56
Rank: #1583 (-29)
30K → 20M
9:06 | 6:42/mi
21M
2:12:05
Rank: #1630 (-47)
20M → 21M
7:09 | 7:09/mi
35K· 21.75 mi
2:17:01
Rank: #1662 (-32)
21M → 35K
4:56 | 6:36/mi
23M
2:25:28
Rank: #1665 (-3)
35K → 23M
8:27 | 6:45/mi
24M
2:31:59
Rank: #1658 (+7)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:37:34
Rank: #1630 (+28)
24M → 40K
5:35 | 6:32/mi
25.2M
2:39:58
Rank: #1612 (+18)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:46:26
Rank: #1606 (+6)
25.2M → Finish
6:28 | 6:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:10
Pace6:07 /mi
2nd Half
Distance13.11 mi
Time1:26:16
Pace6:35 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:05:2218:205:5418:20
5:54
-
10K
6.21 mi10:24:1137:095:5918:49
6:03
+0:09
15K
9.32 mi10:43:2056:186:0219:09
6:10
+0:07
20K
12.43 mi11:02:571:15:556:0719:37
6:19
+0:09
Half
13.11 mi11:07:121:20:106:074:15
6:14
-0:05
25K
15.53 mi11:22:361:35:346:0915:24
6:21
+0:07
30K
18.64 mi11:42:521:55:506:1320:16
6:31
+0:10
20M
20.00 mi11:51:582:04:566:159:06
6:42
+0:11
21M
21.00 mi11:59:072:12:056:177:09
7:09
+0:27
35K
21.75 mi12:04:032:17:016:184:56
6:36
-0:33
23M
23.00 mi12:12:302:25:286:198:27
6:45
+0:09
24M
24.00 mi12:19:012:31:596:206:31
6:31
-0:14
40K
24.85 mi12:24:362:37:346:205:35
6:32
+0:01
25.2M
25.20 mi12:27:002:39:586:212:24
6:58
+0:26
Finish
26.22 mi12:33:282:46:266:216:28
6:21
-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

5:54 /mi

Average Pace

6:21 /mi

Slowest Pace

7:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:02

61% of race

Time at Steady Pace

37:18

22% of race

Time at Slower Pace

27:06

16% of race

Average Pace: 6:21 /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 mi10:05:2218:205:5418:20
5:54
#799
10K
6.21 mi10:24:1137:095:5918:49
6:03
#1016
15K
9.32 mi10:43:2056:186:0219:09
6:10
#1172
20K
12.43 mi11:02:571:15:556:0719:37
6:19
#1373
Half
13.11 mi11:07:121:20:106:074:15
6:14
#1398
25K
15.53 mi11:22:361:35:346:0915:24
6:21
#1477
30K
18.64 mi11:42:521:55:506:1320:16
6:31
#1554
20M
20.00 mi11:51:582:04:566:159:06
6:42
#1583
21M
21.00 mi11:59:072:12:056:177:09
7:09
#1630
35K
21.75 mi12:04:032:17:016:184:56
6:36
#1662
23M
23.00 mi12:12:302:25:286:198:27
6:45
#1665
24M
24.00 mi12:19:012:31:596:206:31
6:31
#1658
40K
24.85 mi12:24:362:37:346:205:35
6:32
#1630
25.2M
25.20 mi12:27:002:39:586:212:24
6:58
#1612
Finish
26.22 mi12:33:282:46:266:216:28
6:21
#1606
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi79950501681(Top 6%)78(Top 0.6%)78(Top 4%)
10K6.21 mi3.10 mi1016-21756-656-61319(Top 5%)63(Top 0.5%)63(Top 3%)
15K9.32 mi3.11 mi1172-15659-359-31681(Top 6%)78(Top 0.6%)78(Top 4%)
20K12.43 mi3.11 mi1373-20165-665-62084(Top 7%)90(Top 0.7%)90(Top 5%)
Half13.11 mi0.68 mi1398-2565652193(Top 8%)91(Top 0.7%)91(Top 5%)
25K15.53 mi2.42 mi1477-7971-671-62123(Top 7%)96(Top 0.8%)96(Top 5%)
30K18.64 mi3.11 mi1554-7775-475-42097(Top 7%)98(Top 0.8%)98(Top 5%)
20M20.00 mi1.36 mi1583-2976-176-12474(Top 9%)131(Top 1%)131(Top 7%)
21M21.00 mi1.00 mi1630-4779-379-32937(Top 10%)204(Top 2%)204(Top 11%)
35K21.75 mi0.75 mi1662-3280-180-12974(Top 10%)220(Top 2%)220(Top 12%)
23M23.00 mi1.25 mi1665-383-383-32487(Top 9%)173(Top 1%)173(Top 10%)
24M24.00 mi1.00 mi1658+781+281+22142(Top 8%)145(Top 1%)145(Top 8%)
40K24.85 mi0.85 mi1630+2880+180+11751(Top 6%)124(Top 1%)124(Top 7%)
25.2M25.20 mi0.35 mi1612+1880801419(Top 5%)109(Top 0.9%)109(Top 6%)
Finish26.22 mi1.02 mi1606+679+179+12103(Top 7%)166(Top 1%)166(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1681

Females

78

F45-49

78

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1319

Females

63

F45-49

63

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1681

Females

78

F45-49

78

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

2084

Females

90

F45-49

90

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2193

Females

91

F45-49

91

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

2123

Females

96

F45-49

96

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

2097

Females

98

F45-49

98

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2474

Females

131

F45-49

131

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2937

Females

204

F45-49

204

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2974

Females

220

F45-49

220

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2487

Females

173

F45-49

173

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2142

Females

145

F45-49

145

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1751

Females

124

F45-49

124

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1419

Females

109

F45-49

109

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

2103

Females

166

F45-49

166

Passing Analysis

Category:
Athletes Passed
330
Passed By
1137
Net Change
-807
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#799
5K → 10K7224-217#799#1016
10K → 15K7163-156#1016#1172
15K → 20K10211-201#1172#1373
20K → Half126-25#1373#1398
Half → 25K26105-79#1398#1477
25K → 30K42119-77#1477#1554
30K → 20M2655-29#1554#1583
20M → 21M2471-47#1583#1630
21M → 35K1143-32#1630#1662
35K → 23M4245-3#1662#1665
23M → 24M3528+7#1665#1658
24M → 40K4517+28#1658#1630
40K → 25.2M202+18#1630#1612
25.2M → Finish3428+6#1612#1606
TOTALS3301137-807
📊

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