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BOSTON MARATHON 2025

Jessie Nelson

Bib: 18996•F

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 43%
Gender (Female)
#0 / 12228
Top 27%
Masters (Masters Women)
#0 / 6759
Top 13%
Division (F40-44)
#0 / 1718
Top 27%
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
7:48/mi
24:13
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
47:57
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:11:28
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:34:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:23/mi
1:40:00
↑ 19↓ 370.5%
25K· 15.53 mi
8:12/mi
1:59:54
↑ 66↓ 880.2%
30K· 18.64 mi
8:08/mi
2:25:10
↑ 181↓ 1480.2%
20M
8:10/mi
2:36:16
↑ 64↓ 500.2%
21M
8:44/mi
2:45:00
↑ 106↓ 241.6%
35K· 21.75 mi
7:59/mi
2:50:58
↑ 17↓ 861.7%
23M
7:54/mi
3:00:51
↑ 23↓ 630.6%
24M
8:01/mi
3:08:52
↓ 821.3%
40K· 24.85 mi
8:00/mi
3:15:42
↓ 200.3%
25.2M
9:34/mi
3:19:00
↑ 13↓ 160.2%
Finish· 26.22 mi
7:32/mi
3:26:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:00
Pace7:38 /mi
2nd Half
Distance13.11 mi
Time1:46:41
Pace8:08 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5524:137:4824:13
7:48
-
10K
6.21 mi11:39:3947:577:4323:44
7:38
-0:10
15K
9.32 mi12:03:101:11:287:4023:31
7:34
-0:04
20K
12.43 mi12:26:401:34:587:3923:30
7:34
0:00
Half
13.11 mi12:31:421:40:007:385:02
7:23
-0:11
25K
15.53 mi12:51:361:59:547:4319:54
8:12
+0:49
30K
18.64 mi13:16:522:25:107:4725:16
8:08
-0:04
20M
20.00 mi13:27:582:36:167:4911:06
8:10
+0:02
21M
21.00 mi13:36:422:45:007:518:44
8:44
+0:34
35K
21.75 mi13:42:402:50:587:525:58
7:59
-0:45
23M
23.00 mi13:52:333:00:517:529:53
7:54
-0:05
24M
24.00 mi14:00:343:08:527:528:01
8:01
+0:07
40K
24.85 mi14:07:243:15:427:526:50
8:00
-0:01
25.2M
25.20 mi14:10:423:19:007:543:18
9:34
+1:34
Finish
26.22 mi14:18:233:26:417:537:41
7:32
-2:02

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

7:23 /mi

Average Pace

7:53 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:28

40% of race

Time at Steady Pace

1:51:11

54% of race

Time at Slower Pace

12:02

6% of race

Average Pace: 7:53 /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 mi11:15:5524:137:4824:13
7:48
#14770
10K
6.21 mi11:39:3947:577:4323:44
7:38
#14048
15K
9.32 mi12:03:101:11:287:4023:31
7:34
#13472
20K
12.43 mi12:26:401:34:587:3923:30
7:34
#12855
Half
13.11 mi12:31:421:40:007:385:02
7:23
#12739
25K
15.53 mi12:51:361:59:547:4319:54
8:12
#13176
30K
18.64 mi13:16:522:25:107:4725:16
8:08
#12973
20M
20.00 mi13:27:582:36:167:4911:06
8:10
#12848
21M
21.00 mi13:36:422:45:007:518:44
8:44
#12757
35K
21.75 mi13:42:402:50:587:525:58
7:59
#12723
23M
23.00 mi13:52:333:00:517:529:53
7:54
#12469
24M
24.00 mi14:00:343:08:527:528:01
8:01
#12398
40K
24.85 mi14:07:243:15:427:526:50
8:00
#12291
25.2M
25.20 mi14:10:423:19:007:543:18
9:34
#12326
Finish
26.22 mi14:18:233:26:417:537:41
7:32
#12183
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi147704391439112344(Top 43%)3086(Top 25%)3086(Top 180%)
10K6.21 mi3.10 mi14048+7223967+4243967+42413382(Top 47%)3599(Top 29%)3599(Top 209%)
15K9.32 mi3.11 mi13472+5763673+2943673+29412344(Top 43%)3086(Top 25%)3086(Top 180%)
20K12.43 mi3.11 mi12855+6173361+3123361+31211309(Top 40%)2640(Top 22%)2640(Top 154%)
Half13.11 mi0.68 mi12739+1163299+623299+6210774(Top 38%)2339(Top 19%)2339(Top 136%)
25K15.53 mi2.42 mi13176-4373577-2783577-27815372(Top 54%)4931(Top 40%)4931(Top 287%)
30K18.64 mi3.11 mi12973+2033536+413536+4112329(Top 43%)3467(Top 28%)3467(Top 202%)
20M20.00 mi1.36 mi12848+1253497+393497+3911624(Top 41%)3246(Top 27%)3246(Top 189%)
21M21.00 mi1.00 mi12757+913480+173480+1711905(Top 42%)3542(Top 29%)3542(Top 206%)
35K21.75 mi0.75 mi12723+343484-43484-412130(Top 43%)3704(Top 30%)3704(Top 216%)
23M23.00 mi1.25 mi12469+2543387+973387+979289(Top 33%)2405(Top 20%)2405(Top 140%)
24M24.00 mi1.00 mi12398+713375+123375+1211386(Top 40%)3509(Top 29%)3509(Top 204%)
40K24.85 mi0.85 mi12291+1073352+233352+2310186(Top 36%)3026(Top 25%)3026(Top 176%)
25.2M25.20 mi0.35 mi12326-353386-343386-3414958(Top 53%)5505(Top 45%)5505(Top 320%)
Finish26.22 mi1.02 mi12183+1433343+433343+439524(Top 34%)2779(Top 23%)2779(Top 162%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

12344

Females

3086

F40-44

3086

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13382

Females

3599

F40-44

3599

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

12344

Females

3086

F40-44

3086

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11309

Females

2640

F40-44

2640

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10774

Females

2339

F40-44

2339

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15372

Females

4931

F40-44

4931

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

12329

Females

3467

F40-44

3467

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

11624

Females

3246

F40-44

3246

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11905

Females

3542

F40-44

3542

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12130

Females

3704

F40-44

3704

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

9289

Females

2405

F40-44

2405

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

11386

Females

3509

F40-44

3509

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10186

Females

3026

F40-44

3026

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14958

Females

5505

F40-44

5505

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9524

Females

2779

F40-44

2779

Passing Analysis

Category:
Athletes Passed
3635
Passed By
1048
Net Change
+2587
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14770
5K → 10K78765+722#14770#14048
10K → 15K59620+576#14048#13472
15K → 20K63114+617#13472#12855
20K → Half1215+116#12855#12739
Half → 25K74511-437#12739#13176
25K → 30K340137+203#13176#12973
30K → 20M18156+125#12973#12848
20M → 21M14655+91#12848#12757
21M → 35K7844+34#12757#12723
35K → 23M26915+254#12723#12469
23M → 24M10736+71#12469#12398
24M → 40K12720+107#12398#12291
40K → 25.2M2055-35#12291#12326
25.2M → Finish15815+143#12326#12183
TOTALS36351048+2587
📊

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