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BOSTON MARATHON 2025

Kelly Nel

Bib: 3870•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 38%
Gender (Female)
#0 / 12228
Top 22%
Division (F18-39)
#0 / 5469
Top 38%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:38
Rank: #7546
Start → 5K
21:38 | 6:58/mi
10K· 6.21 mi
43:55
Rank: #8424 (-878)
5K → 10K
22:17 | 7:10/mi
15K· 9.32 mi
1:06:26
Rank: #8729 (-305)
10K → 15K
22:31 | 7:15/mi
20K· 12.43 mi
1:29:56
Rank: #9317 (-588)
15K → 20K
23:30 | 7:34/mi
Half· 13.11 mi
1:35:00
Rank: #9386 (-69)
20K → Half
5:04 | 7:26/mi
25K· 15.53 mi
1:53:35
Rank: #9675 (-289)
Half → 25K
18:35 | 7:40/mi
30K· 18.64 mi
2:18:46
Rank: #10095 (-420)
25K → 30K
25:11 | 8:06/mi
20M
2:30:10
Rank: #10325 (-230)
30K → 20M
11:24 | 8:23/mi
21M
2:38:59
Rank: #10439 (-114)
20M → 21M
8:49 | 8:49/mi
35K· 21.75 mi
2:45:12
Rank: #10577 (-138)
21M → 35K
6:13 | 8:19/mi
23M
2:55:48
Rank: #10694 (-117)
35K → 23M
10:36 | 8:28/mi
24M
3:04:08
Rank: #10791 (-97)
23M → 24M
8:20 | 8:20/mi
40K· 24.85 mi
3:11:22
Rank: #10862 (-71)
24M → 40K
7:14 | 8:28/mi
25.2M
3:14:31
Rank: #10890 (-28)
40K → 25.2M
3:09 | 9:08/mi
Finish· 26.22 mi
3:22:27
Rank: #10875 (+15)
25.2M → Finish
7:56 | 7:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:00
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:47:27
Pace8:12 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0921:386:5821:38
6:58
-
10K
6.21 mi10:46:2643:557:0422:17
7:10
+0:12
15K
9.32 mi11:08:571:06:267:0822:31
7:15
+0:05
20K
12.43 mi11:32:271:29:567:1423:30
7:34
+0:19
Half
13.11 mi11:37:311:35:007:155:04
7:26
-0:08
25K
15.53 mi11:56:061:53:357:1918:35
7:40
+0:14
30K
18.64 mi12:21:172:18:467:2725:11
8:06
+0:26
20M
20.00 mi12:32:412:30:107:3011:24
8:23
+0:17
21M
21.00 mi12:41:302:38:597:348:49
8:49
+0:26
35K
21.75 mi12:47:432:45:127:366:13
8:19
-0:30
23M
23.00 mi12:58:192:55:487:3910:36
8:28
+0:09
24M
24.00 mi13:06:393:04:087:408:20
8:20
-0:08
40K
24.85 mi13:13:533:11:227:427:14
8:28
+0:08
25.2M
25.20 mi13:17:023:14:317:433:09
9:08
+0:40
Finish
26.22 mi13:24:583:22:277:447:56
7:47
-1:21

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

6:58 /mi

Average Pace

7:44 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:31

60% of race

Time at Steady Pace

51:08

25% of race

Time at Slower Pace

29:48

15% of race

Average Pace: 7:43 /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 mi10:24:0921:386:5821:38
6:58
#7546
10K
6.21 mi10:46:2643:557:0422:17
7:10
#8424
15K
9.32 mi11:08:571:06:267:0822:31
7:15
#8729
20K
12.43 mi11:32:271:29:567:1423:30
7:34
#9317
Half
13.11 mi11:37:311:35:007:155:04
7:26
#9386
25K
15.53 mi11:56:061:53:357:1918:35
7:40
#9675
30K
18.64 mi12:21:172:18:467:2725:11
8:06
#10095
20M
20.00 mi12:32:412:30:107:3011:24
8:23
#10325
21M
21.00 mi12:41:302:38:597:348:49
8:49
#10439
35K
21.75 mi12:47:432:45:127:366:13
8:19
#10577
23M
23.00 mi12:58:192:55:487:3910:36
8:28
#10694
24M
24.00 mi13:06:393:04:087:408:20
8:20
#10791
40K
24.85 mi13:13:533:11:227:427:14
8:28
#10862
25.2M
25.20 mi13:17:023:14:317:433:09
9:08
#10890
Finish
26.22 mi13:24:583:22:277:447:56
7:47
#10875
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi75468268269551(Top 34%)1679(Top 14%)1679(Top 31%)
10K6.21 mi3.10 mi8424-8781154-3281154-3289280(Top 33%)1505(Top 12%)1505(Top 28%)
15K9.32 mi3.11 mi8729-3051286-1321286-1329551(Top 34%)1679(Top 14%)1679(Top 31%)
20K12.43 mi3.11 mi9317-5881555-2691555-26911296(Top 40%)2627(Top 21%)2627(Top 48%)
Half13.11 mi0.68 mi9386-691598-431598-4311177(Top 39%)2518(Top 21%)2518(Top 46%)
25K15.53 mi2.42 mi9675-2891756-1581756-15811282(Top 40%)2731(Top 22%)2731(Top 50%)
30K18.64 mi3.11 mi10095-4202008-2522008-25212140(Top 43%)3354(Top 27%)3354(Top 61%)
20M20.00 mi1.36 mi10325-2302160-1522160-15213081(Top 46%)4016(Top 33%)4016(Top 73%)
21M21.00 mi1.00 mi10439-1142264-1042264-10412408(Top 44%)3801(Top 31%)3801(Top 70%)
35K21.75 mi0.75 mi10577-1382351-872351-8714303(Top 50%)4834(Top 40%)4834(Top 88%)
23M23.00 mi1.25 mi10694-1172455-1042455-10413109(Top 46%)4318(Top 35%)4318(Top 79%)
24M24.00 mi1.00 mi10791-972548-932548-9313484(Top 47%)4550(Top 37%)4550(Top 83%)
40K24.85 mi0.85 mi10862-712618-702618-7013187(Top 46%)4532(Top 37%)4532(Top 83%)
25.2M25.20 mi0.35 mi10890-282653-352653-3512578(Top 44%)4257(Top 35%)4257(Top 78%)
Finish26.22 mi1.02 mi10875+152674-212674-2111340(Top 40%)3626(Top 30%)3626(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9551

Females

1679

F18-39

1679

5K→10K

3.1 - 6.2 mi

Top 33%
×5stories
+79ft-138ft

Overall

9280

Females

1505

F18-39

1505

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9551

Females

1679

F18-39

1679

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

11296

Females

2627

F18-39

2627

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

11177

Females

2518

F18-39

2518

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

11282

Females

2731

F18-39

2731

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12140

Females

3354

F18-39

3354

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

13081

Females

4016

F18-39

4016

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12408

Females

3801

F18-39

3801

21M→35K

21.0 - 21.8 mi

Top 50%
×7stories
+17ft-86ft

Overall

14303

Females

4834

F18-39

4834

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

13109

Females

4318

F18-39

4318

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

13484

Females

4550

F18-39

4550

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13187

Females

4532

F18-39

4532

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12578

Females

4257

F18-39

4257

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11340

Females

3626

F18-39

3626

Passing Analysis

Category:
Athletes Passed
821
Passed By
4148
Net Change
-3329
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7546
5K → 10K29907-878#7546#8424
10K → 15K76381-305#8424#8729
15K → 20K56644-588#8729#9317
20K → Half1382-69#9317#9386
Half → 25K85374-289#9386#9675
25K → 30K118536-420#9675#10095
30K → 20M68298-230#10095#10325
20M → 21M75189-114#10325#10439
21M → 35K25163-138#10439#10577
35K → 23M77194-117#10577#10694
23M → 24M50147-97#10694#10791
24M → 40K48119-71#10791#10862
40K → 25.2M2957-28#10862#10890
25.2M → Finish7257+15#10890#10875
TOTALS8214148-3329
📊

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