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BOSTON MARATHON 2025

Nika Renshaw

Bib: 28242•F

NH

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 35%
Division (F18-39)
#0 / 5469
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
7:54/mi
24:34
↑ 97↓ 3451.5%
10K· 6.21 mi
8:03/mi
49:34
↑ 79↓ 1380.4%
15K· 9.32 mi
8:06/mi
1:14:43
↑ 67↓ 78
20K· 12.43 mi
8:11/mi
1:40:07
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:45:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:11/mi
2:05:17
↑ 66↓ 880.2%
30K· 18.64 mi
8:15/mi
2:30:56
↑ 181↓ 1480.2%
20M
8:11/mi
2:42:03
↑ 64↓ 500.2%
21M
8:32/mi
2:50:35
↑ 106↓ 241.6%
35K· 21.75 mi
7:37/mi
2:56:17
↑ 17↓ 861.7%
23M
7:59/mi
3:06:17
↑ 23↓ 630.6%
24M
8:01/mi
3:14:18
↓ 821.3%
40K· 24.85 mi
8:12/mi
3:21:19
↓ 200.3%
25.2M
8:45/mi
3:24:20
↑ 13↓ 160.2%
Finish· 26.22 mi
7:48/mi
3:32:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:27
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:46:50
Pace8:09 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:2124:347:5424:34
7:54
-
10K
6.21 mi12:06:2149:347:5925:00
8:03
+0:09
15K
9.32 mi12:31:301:14:438:0125:09
8:06
+0:03
20K
12.43 mi12:56:541:40:078:0325:24
8:11
+0:05
Half
13.11 mi13:02:141:45:278:035:20
7:49
-0:22
25K
15.53 mi13:22:042:05:178:0419:50
8:11
+0:22
30K
18.64 mi13:47:432:30:568:0625:39
8:15
+0:04
20M
20.00 mi13:58:502:42:038:0611:07
8:11
-0:04
21M
21.00 mi14:07:222:50:358:078:32
8:32
+0:21
35K
21.75 mi14:13:042:56:178:065:42
7:37
-0:55
23M
23.00 mi14:23:043:06:178:0610:00
7:59
+0:22
24M
24.00 mi14:31:053:14:188:068:01
8:01
+0:02
40K
24.85 mi14:38:063:21:198:067:01
8:12
+0:11
25.2M
25.20 mi14:41:073:24:208:073:01
8:45
+0:33
Finish
26.22 mi14:49:043:32:178:067:57
7:48
-0:57

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

7:37 /mi

Average Pace

8:06 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:44

95% of race

Time at Steady Pace

11:33

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:06 /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 mi11:41:2124:347:5424:34
7:54
#15776
10K
6.21 mi12:06:2149:347:5925:00
8:03
#16322
15K
9.32 mi12:31:301:14:438:0125:09
8:06
#16461
20K
12.43 mi12:56:541:40:078:0325:24
8:11
#16347
Half
13.11 mi13:02:141:45:278:035:20
7:49
#16255
25K
15.53 mi13:22:042:05:178:0419:50
8:11
#16066
30K
18.64 mi13:47:432:30:568:0625:39
8:15
#15486
20M
20.00 mi13:58:502:42:038:0611:07
8:11
#15162
21M
21.00 mi14:07:222:50:358:078:32
8:32
#14832
35K
21.75 mi14:13:042:56:178:065:42
7:37
#14618
23M
23.00 mi14:23:043:06:178:0610:00
7:59
#14339
24M
24.00 mi14:31:053:14:188:068:01
8:01
#14169
40K
24.85 mi14:38:063:21:198:067:01
8:12
#14045
25.2M
25.20 mi14:41:073:24:208:073:01
8:45
#13955
Finish
26.22 mi14:49:043:32:178:067:57
7:48
#13832
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi157765005500516704(Top 59%)5557(Top 45%)5557(Top 102%)
10K6.21 mi3.10 mi16322-5465332-3275332-32716819(Top 59%)5596(Top 46%)5596(Top 102%)
15K9.32 mi3.11 mi16461-1395413-815413-8116704(Top 59%)5557(Top 45%)5557(Top 102%)
20K12.43 mi3.11 mi16347+1145348+655348+6516146(Top 57%)5298(Top 43%)5298(Top 97%)
Half13.11 mi0.68 mi16255+925309+395309+3914459(Top 51%)4324(Top 35%)4324(Top 79%)
25K15.53 mi2.42 mi16066+1895201+1085201+10815174(Top 53%)4829(Top 39%)4829(Top 88%)
30K18.64 mi3.11 mi15486+5804940+2614940+26113212(Top 47%)3950(Top 32%)3950(Top 72%)
20M20.00 mi1.36 mi15162+3244792+1484792+14811720(Top 41%)3318(Top 27%)3318(Top 61%)
21M21.00 mi1.00 mi14832+3304626+1664626+16610732(Top 38%)2980(Top 24%)2980(Top 54%)
35K21.75 mi0.75 mi14618+2144517+1094517+1099558(Top 34%)2413(Top 20%)2413(Top 44%)
23M23.00 mi1.25 mi14339+2794398+1194398+1199974(Top 35%)2741(Top 22%)2741(Top 50%)
24M24.00 mi1.00 mi14169+1704347+514347+5111411(Top 40%)3534(Top 29%)3534(Top 65%)
40K24.85 mi0.85 mi14045+1244301+464301+4611630(Top 41%)3722(Top 30%)3722(Top 68%)
25.2M25.20 mi0.35 mi13955+904264+374264+3710412(Top 37%)3248(Top 27%)3248(Top 59%)
Finish26.22 mi1.02 mi13832+1234227+374227+3711485(Top 40%)3702(Top 30%)3702(Top 68%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16704

Females

5557

F18-39

5557

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16819

Females

5596

F18-39

5596

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16704

Females

5557

F18-39

5557

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16146

Females

5298

F18-39

5298

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

14459

Females

4324

F18-39

4324

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

15174

Females

4829

F18-39

4829

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13212

Females

3950

F18-39

3950

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

11720

Females

3318

F18-39

3318

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10732

Females

2980

F18-39

2980

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9558

Females

2413

F18-39

2413

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9974

Females

2741

F18-39

2741

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

11411

Females

3534

F18-39

3534

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11630

Females

3722

F18-39

3722

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10412

Females

3248

F18-39

3248

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

11485

Females

3702

F18-39

3702

Passing Analysis

Category:
Athletes Passed
3247
Passed By
1303
Net Change
+1944
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15776
5K → 10K139685-546#15776#16322
10K → 15K165304-139#16322#16461
15K → 20K266152+114#16461#16347
20K → Half942+92#16347#16255
Half → 25K25263+189#16255#16066
25K → 30K60323+580#16066#15486
30K → 20M3339+324#15486#15162
20M → 21M3399+330#15162#14832
21M → 35K2151+214#14832#14618
35K → 23M2845+279#14618#14339
23M → 24M18010+170#14339#14169
24M → 40K13814+124#14169#14045
40K → 25.2M966+90#14045#13955
25.2M → Finish14320+123#13955#13832
TOTALS32471303+1944
📊

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