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BOSTON MARATHON 2025

May Gustafson

Bib: 16313•F

AZ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 37%
Gender (Female)
#0 / 12228
Top 20%
Division (F18-39)
#0 / 5469
Top 35%
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
7:24/mi
23:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:31/mi
46:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:09:31
↑ 67↓ 78
20K· 12.43 mi
7:22/mi
1:32:24
↑ 106↓ 860.1%
Half· 13.11 mi
7:26/mi
1:37:28
↑ 19↓ 370.5%
25K· 15.53 mi
7:32/mi
1:55:45
↑ 66↓ 880.2%
30K· 18.64 mi
7:56/mi
2:20:23
↑ 181↓ 1480.2%
20M
8:06/mi
2:31:23
↑ 64↓ 500.2%
21M
8:40/mi
2:40:03
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:45:57
↑ 17↓ 861.7%
23M
7:57/mi
2:55:54
↑ 23↓ 630.6%
24M
7:56/mi
3:03:50
↓ 821.3%
40K· 24.85 mi
7:50/mi
3:10:32
↓ 200.3%
25.2M
8:39/mi
3:13:31
↑ 13↓ 160.2%
Finish· 26.22 mi
7:27/mi
3:21:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:28
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:43:39
Pace7:54 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:2123:007:2423:00
7:24
-
10K
6.21 mi11:19:4346:227:2823:22
7:31
+0:07
15K
9.32 mi11:42:521:09:317:2823:09
7:27
-0:04
20K
12.43 mi12:05:451:32:247:2622:53
7:22
-0:05
Half
13.11 mi12:10:491:37:287:265:04
7:26
+0:04
25K
15.53 mi12:29:061:55:457:2718:17
7:32
+0:06
30K
18.64 mi12:53:442:20:237:3224:38
7:56
+0:24
20M
20.00 mi13:04:442:31:237:3411:00
8:06
+0:10
21M
21.00 mi13:13:242:40:037:378:40
8:40
+0:34
35K
21.75 mi13:19:182:45:577:385:54
7:53
-0:47
23M
23.00 mi13:29:152:55:547:399:57
7:57
+0:04
24M
24.00 mi13:37:113:03:507:407:56
7:56
-0:01
40K
24.85 mi13:43:533:10:327:406:42
7:50
-0:06
25.2M
25.20 mi13:46:523:13:317:412:59
8:39
+0:49
Finish
26.22 mi13:54:283:21:077:417:36
7:27
-1:12

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

7:22 /mi

Average Pace

7:41 /mi

Slowest Pace

8:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:28

94% of race

Time at Steady Pace

11:39

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:40 /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 mi10:56:2123:007:2423:00
7:24
#11366
10K
6.21 mi11:19:4346:227:2823:22
7:31
#11798
15K
9.32 mi11:42:521:09:317:2823:09
7:27
#11609
20K
12.43 mi12:05:451:32:247:2622:53
7:22
#11071
Half
13.11 mi12:10:491:37:287:265:04
7:26
#11085
25K
15.53 mi12:29:061:55:457:2718:17
7:32
#10908
30K
18.64 mi12:53:442:20:237:3224:38
7:56
#10878
20M
20.00 mi13:04:442:31:237:3411:00
8:06
#10852
21M
21.00 mi13:13:242:40:037:378:40
8:40
#10852
35K
21.75 mi13:19:182:45:577:385:54
7:53
#10841
23M
23.00 mi13:29:152:55:547:399:57
7:57
#10723
24M
24.00 mi13:37:113:03:507:407:56
7:56
#10696
40K
24.85 mi13:43:533:10:327:406:42
7:50
#10604
25.2M
25.20 mi13:46:523:13:317:412:59
8:39
#10561
Finish
26.22 mi13:54:283:21:077:417:36
7:27
#10472
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi113662468246811357(Top 40%)2559(Top 21%)2559(Top 47%)
10K6.21 mi3.10 mi11798-4322703-2352703-23512309(Top 43%)2981(Top 24%)2981(Top 55%)
15K9.32 mi3.11 mi11609+1892625+782625+7811357(Top 40%)2559(Top 21%)2559(Top 47%)
20K12.43 mi3.11 mi11071+5382380+2452380+2459617(Top 34%)1798(Top 15%)1798(Top 33%)
Half13.11 mi0.68 mi11085-142388-82388-811162(Top 39%)2503(Top 20%)2503(Top 46%)
25K15.53 mi2.42 mi10908+1772337+512337+5110316(Top 36%)2244(Top 18%)2244(Top 41%)
30K18.64 mi3.11 mi10878+302400-632400-6310868(Top 38%)2714(Top 22%)2714(Top 50%)
20M20.00 mi1.36 mi10852+262434-342434-3411083(Top 39%)2980(Top 24%)2980(Top 54%)
21M21.00 mi1.00 mi108522476-422476-4211478(Top 40%)3333(Top 27%)3333(Top 61%)
35K21.75 mi0.75 mi10841+112492-162492-1611473(Top 40%)3345(Top 27%)3345(Top 61%)
23M23.00 mi1.25 mi10723+1182473+192473+199652(Top 34%)2571(Top 21%)2571(Top 47%)
24M24.00 mi1.00 mi10696+272496-232496-2310783(Top 38%)3182(Top 26%)3182(Top 58%)
40K24.85 mi0.85 mi10604+922470+262470+269060(Top 32%)2481(Top 20%)2481(Top 45%)
25.2M25.20 mi0.35 mi10561+432464+62464+69765(Top 34%)2891(Top 24%)2891(Top 53%)
Finish26.22 mi1.02 mi10472+892457+72457+78925(Top 31%)2499(Top 20%)2499(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

11357

Females

2559

F18-39

2559

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

12309

Females

2981

F18-39

2981

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

11357

Females

2559

F18-39

2559

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9617

Females

1798

F18-39

1798

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

11162

Females

2503

F18-39

2503

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

10316

Females

2244

F18-39

2244

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10868

Females

2714

F18-39

2714

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11083

Females

2980

F18-39

2980

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

11478

Females

3333

F18-39

3333

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11473

Females

3345

F18-39

3345

35K→23M

21.8 - 23.0 mi

Top 34%
×5story building
+23ft-63ft

Overall

9652

Females

2571

F18-39

2571

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10783

Females

3182

F18-39

3182

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9060

Females

2481

F18-39

2481

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9765

Females

2891

F18-39

2891

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8925

Females

2499

F18-39

2499

Passing Analysis

Category:
Athletes Passed
2300
Passed By
1406
Net Change
+894
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11366
5K → 10K104536-432#11366#11798
10K → 15K27889+189#11798#11609
15K → 20K55214+538#11609#11071
20K → Half3347-14#11071#11085
Half → 25K24568+177#11085#10908
25K → 30K255225+30#10908#10878
30K → 20M12397+26#10878#10852
20M → 21M1011010#10852#10852
21M → 35K6352+11#10852#10841
35K → 23M16244+118#10841#10723
23M → 24M8255+27#10723#10696
24M → 40K11018+92#10696#10604
40K → 25.2M6522+43#10604#10561
25.2M → Finish12738+89#10561#10472
TOTALS23001406+894
📊

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