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BOSTON MARATHON 2025

Jennifer Nichols

Bib: 23279•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
8:33/mi
26:33
↑ 97↓ 3451.5%
10K· 6.21 mi
8:31/mi
53:02
↑ 79↓ 1380.4%
15K· 9.32 mi
8:51/mi
1:20:31
↑ 67↓ 78
20K· 12.43 mi
9:07/mi
1:48:49
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:54:35
↑ 19↓ 370.5%
25K· 15.53 mi
8:44/mi
2:15:46
↑ 66↓ 880.2%
30K· 18.64 mi
9:03/mi
2:43:54
↑ 181↓ 1480.2%
20M
9:23/mi
2:56:39
↑ 64↓ 500.2%
21M
10:43/mi
3:07:22
↑ 106↓ 241.6%
35K· 21.75 mi
8:57/mi
3:14:04
↑ 17↓ 861.7%
23M
9:19/mi
3:25:44
↑ 23↓ 630.6%
24M
9:23/mi
3:35:07
↓ 821.3%
40K· 24.85 mi
9:18/mi
3:43:04
↓ 200.3%
25.2M
9:46/mi
3:46:26
↑ 13↓ 160.2%
Finish· 26.22 mi
8:43/mi
3:55:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:35
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:00:44
Pace9:13 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:2126:338:3326:33
8:33
-
10K
6.21 mi11:49:5053:028:3226:29
8:31
-0:02
15K
9.32 mi12:17:191:20:318:3827:29
8:51
+0:20
20K
12.43 mi12:45:371:48:498:4528:18
9:07
+0:16
Half
13.11 mi12:51:231:54:358:445:46
8:27
-0:40
25K
15.53 mi13:12:342:15:468:4421:11
8:44
+0:17
30K
18.64 mi13:40:422:43:548:4828:08
9:03
+0:19
20M
20.00 mi13:53:272:56:398:5012:45
9:23
+0:20
21M
21.00 mi14:04:103:07:228:5510:43
10:43
+1:20
35K
21.75 mi14:10:523:14:048:556:42
8:57
-1:46
23M
23.00 mi14:22:323:25:448:5711:40
9:19
+0:22
24M
24.00 mi14:31:553:35:078:589:23
9:23
+0:04
40K
24.85 mi14:39:523:43:048:587:57
9:18
-0:05
25.2M
25.20 mi14:43:143:46:268:593:22
9:46
+0:28
Finish
26.22 mi14:52:073:55:198:598:53
8:43
-1:03

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

8:27 /mi

Average Pace

8:59 /mi

Slowest Pace

10:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:52

38% of race

Time at Steady Pace

1:50:14

47% of race

Time at Slower Pace

36:13

15% of race

Average Pace: 8:58 /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 mi11:23:2126:338:3326:33
8:33
#20176
10K
6.21 mi11:49:5053:028:3226:29
8:31
#20053
15K
9.32 mi12:17:191:20:318:3827:29
8:51
#20416
20K
12.43 mi12:45:371:48:498:4528:18
9:07
#20709
Half
13.11 mi12:51:231:54:358:445:46
8:27
#20627
25K
15.53 mi13:12:342:15:468:4421:11
8:44
#20302
30K
18.64 mi13:40:422:43:548:4828:08
9:03
#19833
20M
20.00 mi13:53:272:56:398:5012:45
9:23
#19725
21M
21.00 mi14:04:103:07:228:5510:43
10:43
#19819
35K
21.75 mi14:10:523:14:048:556:42
8:57
#19747
23M
23.00 mi14:22:323:25:448:5711:40
9:19
#19633
24M
24.00 mi14:31:553:35:078:589:23
9:23
#19615
40K
24.85 mi14:39:523:43:048:587:57
9:18
#19539
25.2M
25.20 mi14:43:143:46:268:593:22
9:46
#19478
Finish
26.22 mi14:52:073:55:198:598:53
8:43
#19403
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi201767601760121266(Top 75%)8142(Top 67%)8142(Top 449%)
10K6.21 mi3.10 mi20053+1237501+1007501+10019940(Top 70%)7433(Top 61%)7433(Top 410%)
15K9.32 mi3.11 mi20416-3637709-2087709-20821266(Top 75%)8142(Top 67%)8142(Top 449%)
20K12.43 mi3.11 mi20709-2937877-1687877-16821488(Top 76%)8309(Top 68%)8309(Top 458%)
Half13.11 mi0.68 mi20627+827829+487829+4818961(Top 67%)6884(Top 56%)6884(Top 380%)
25K15.53 mi2.42 mi20302+3257662+1677662+16718619(Top 66%)6768(Top 55%)6768(Top 373%)
30K18.64 mi3.11 mi19833+4697421+2417421+24117964(Top 63%)6559(Top 54%)6559(Top 362%)
20M20.00 mi1.36 mi19725+1087384+377384+3718694(Top 66%)7105(Top 58%)7105(Top 392%)
21M21.00 mi1.00 mi19819-947470-867470-8620652(Top 73%)8268(Top 68%)8268(Top 456%)
35K21.75 mi0.75 mi19747+727445+257445+2518049(Top 64%)6931(Top 57%)6931(Top 382%)
23M23.00 mi1.25 mi19633+1147415+307415+3017875(Top 63%)6932(Top 57%)6932(Top 382%)
24M24.00 mi1.00 mi19615+187434-197434-1919178(Top 68%)7639(Top 62%)7639(Top 421%)
40K24.85 mi0.85 mi19539+767398+367398+3617876(Top 63%)7075(Top 58%)7075(Top 390%)
25.2M25.20 mi0.35 mi19478+617374+247374+2415996(Top 56%)6101(Top 50%)6101(Top 337%)
Finish26.22 mi1.02 mi19403+757353+217353+2117617(Top 62%)6885(Top 56%)6885(Top 380%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21266

Females

8142

F45-49

8142

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19940

Females

7433

F45-49

7433

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21266

Females

8142

F45-49

8142

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

21488

Females

8309

F45-49

8309

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

18961

Females

6884

F45-49

6884

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18619

Females

6768

F45-49

6768

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

17964

Females

6559

F45-49

6559

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18694

Females

7105

F45-49

7105

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20652

Females

8268

F45-49

8268

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

18049

Females

6931

F45-49

6931

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17875

Females

6932

F45-49

6932

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

19178

Females

7639

F45-49

7639

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17876

Females

7075

F45-49

7075

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15996

Females

6101

F45-49

6101

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

17617

Females

6885

F45-49

6885

Passing Analysis

Category:
Athletes Passed
2256
Passed By
1483
Net Change
+773
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20176
5K → 10K347224+123#20176#20053
10K → 15K90453-363#20053#20416
15K → 20K102395-293#20416#20709
20K → Half853+82#20709#20627
Half → 25K34015+325#20627#20302
25K → 30K50738+469#20302#19833
30K → 20M14941+108#19833#19725
20M → 21M72166-94#19725#19819
21M → 35K8614+72#19819#19747
35K → 23M14733+114#19747#19633
23M → 24M7759+18#19633#19615
24M → 40K9216+76#19615#19539
40K → 25.2M643+61#19539#19478
25.2M → Finish9823+75#19478#19403
TOTALS22561483+773
📊

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