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BOSTON MARATHON 2025

Nina Gunderson

Bib: 14588•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 27%
Gender (Female)
#0 / 12228
Top 10%
Division (F18-39)
#0 / 5469
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:31
Rank: #9887
Start → 5K
7:15/mi
22:31 split
10K· 6.21 mi
44:52
Rank: #9637 (+250)
5K → 10K
7:12/mi
22:21 split
15K· 9.32 mi
1:07:08
Rank: #9362 (+275)
10K → 15K
7:10/mi
22:16 split
20K· 12.43 mi
1:29:36
Rank: #9084 (+278)
15K → 20K
7:14/mi
22:28 split
Half· 13.11 mi
1:34:25
Rank: #9008 (+76)
20K → Half
7:04/mi
4:49 split
25K· 15.53 mi
1:52:16
Rank: #8928 (+80)
Half → 25K
7:22/mi
17:51 split
30K· 18.64 mi
2:15:31
Rank: #8595 (+333)
25K → 30K
7:29/mi
23:15 split
20M
2:25:38
Rank: #8396 (+199)
30K → 20M
7:27/mi
10:07 split
21M
2:33:28
Rank: #8199 (+197)
20M → 21M
7:50/mi
7:50 split
35K· 21.75 mi
2:38:59
Rank: #8140 (+59)
21M → 35K
7:22/mi
5:31 split
23M
2:48:21
Rank: #7966 (+174)
35K → 23M
7:29/mi
9:22 split
24M
2:55:42
Rank: #7887 (+79)
23M → 24M
7:21/mi
7:21 split
40K· 24.85 mi
3:02:01
Rank: #7766 (+121)
24M → 40K
7:23/mi
6:19 split
25.2M
3:04:50
Rank: #7722 (+44)
40K → 25.2M
8:10/mi
2:49 split
Finish· 26.22 mi
3:11:53
Rank: #7580 (+142)
25.2M → Finish
6:55/mi
7:03 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:25
Pace7:12 /mi
2nd Half
Distance13.11 mi
Time1:37:28
Pace7:26 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:0322:317:1522:31
7:15
-
10K
6.21 mi11:16:2444:527:1322:21
7:12
-0:03
15K
9.32 mi11:38:401:07:087:1222:16
7:10
-0:02
20K
12.43 mi12:01:081:29:367:1322:28
7:14
+0:04
Half
13.11 mi12:05:571:34:257:124:49
7:04
-0:10
25K
15.53 mi12:23:481:52:167:1417:51
7:22
+0:18
30K
18.64 mi12:47:032:15:317:1623:15
7:29
+0:07
20M
20.00 mi12:57:102:25:387:1710:07
7:27
-0:02
21M
21.00 mi13:05:002:33:287:187:50
7:50
+0:23
35K
21.75 mi13:10:312:38:597:195:31
7:22
-0:28
23M
23.00 mi13:19:532:48:217:199:22
7:29
+0:07
24M
24.00 mi13:27:142:55:427:197:21
7:21
-0:08
40K
24.85 mi13:33:333:02:017:196:19
7:23
+0:02
25.2M
25.20 mi13:36:223:04:507:202:49
8:10
+0:47
Finish
26.22 mi13:43:253:11:537:197:03
6:55
-1:15

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

6:55 /mi

Average Pace

7:19 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:14

94% of race

Time at Steady Pace

7:50

4% of race

Time at Slower Pace

2:49

1% of race

Average Pace: 7:19 /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 mi10:54:0322:317:1522:31
7:15
#9887
10K
6.21 mi11:16:2444:527:1322:21
7:12
#9637
15K
9.32 mi11:38:401:07:087:1222:16
7:10
#9362
20K
12.43 mi12:01:081:29:367:1322:28
7:14
#9084
Half
13.11 mi12:05:571:34:257:124:49
7:04
#9008
25K
15.53 mi12:23:481:52:167:1417:51
7:22
#8928
30K
18.64 mi12:47:032:15:317:1623:15
7:29
#8595
20M
20.00 mi12:57:102:25:387:1710:07
7:27
#8396
21M
21.00 mi13:05:002:33:287:187:50
7:50
#8199
35K
21.75 mi13:10:312:38:597:195:31
7:22
#8140
23M
23.00 mi13:19:532:48:217:199:22
7:29
#7966
24M
24.00 mi13:27:142:55:427:197:21
7:21
#7887
40K
24.85 mi13:33:333:02:017:196:19
7:23
#7766
25.2M
25.20 mi13:36:223:04:507:202:49
8:10
#7722
Finish
26.22 mi13:43:253:11:537:197:03
6:55
#7580
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9887175317538847(Top 31%)1359(Top 11%)1359(Top 25%)
10K6.21 mi3.10 mi9637+2501632+1211632+1219444(Top 33%)1573(Top 13%)1573(Top 29%)
15K9.32 mi3.11 mi9362+2751543+891543+898847(Top 31%)1359(Top 11%)1359(Top 25%)
20K12.43 mi3.11 mi9084+2781453+901453+908476(Top 30%)1304(Top 11%)1304(Top 24%)
Half13.11 mi0.68 mi9008+761419+341419+348067(Top 28%)1111(Top 9%)1111(Top 20%)
25K15.53 mi2.42 mi8928+801416+31416+38844(Top 31%)1567(Top 13%)1567(Top 29%)
30K18.64 mi3.11 mi8595+3331336+801336+807645(Top 27%)1248(Top 10%)1248(Top 23%)
20M20.00 mi1.36 mi8396+1991289+471289+476682(Top 24%)1034(Top 8%)1034(Top 19%)
21M21.00 mi1.00 mi8199+1971247+421247+426415(Top 23%)1068(Top 9%)1068(Top 20%)
35K21.75 mi0.75 mi8140+591244+31244+37748(Top 27%)1571(Top 13%)1571(Top 29%)
23M23.00 mi1.25 mi7966+1741230+141230+146540(Top 23%)1205(Top 10%)1205(Top 22%)
24M24.00 mi1.00 mi7887+791239-91239-96747(Top 24%)1356(Top 11%)1356(Top 25%)
40K24.85 mi0.85 mi7766+1211225+141225+146162(Top 22%)1202(Top 10%)1202(Top 22%)
25.2M25.20 mi0.35 mi7722+441223+21223+26913(Top 24%)1585(Top 13%)1585(Top 29%)
Finish26.22 mi1.02 mi7580+1421198+251198+255248(Top 18%)952(Top 8%)952(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8847

Females

1359

F18-39

1359

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

9444

Females

1573

F18-39

1573

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8847

Females

1359

F18-39

1359

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8476

Females

1304

F18-39

1304

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

8067

Females

1111

F18-39

1111

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8844

Females

1567

F18-39

1567

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7645

Females

1248

F18-39

1248

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6682

Females

1034

F18-39

1034

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6415

Females

1068

F18-39

1068

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7748

Females

1571

F18-39

1571

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6540

Females

1205

F18-39

1205

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6747

Females

1356

F18-39

1356

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

6162

Females

1202

F18-39

1202

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6913

Females

1585

F18-39

1585

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

5248

Females

952

F18-39

952

Passing Analysis

Category:
Athletes Passed
2845
Passed By
537
Net Change
+2307
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9887
5K → 10K368117+250#9887#9637
10K → 15K31944+275#9637#9362
15K → 20K32547+278#9362#9084
20K → Half859+76#9084#9008
Half → 25K191111+80#9008#8928
25K → 30K39865+333#8928#8595
30K → 20M21213+199#8595#8396
20M → 21M2058+197#8396#8199
21M → 35K8930+59#8199#8140
35K → 23M20329+174#8140#7966
23M → 24M10728+79#7966#7887
24M → 40K13413+121#7887#7766
40K → 25.2M5511+44#7766#7722
25.2M → Finish15412+142#7722#7580
TOTALS2845537+2307
📊

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