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BOSTON MARATHON 2025

Ashley Gunderson

Bib: 14961•F

WA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 24%
Gender (Female)
#0 / 12228
Top 8%
Division (F18-39)
#0 / 5469
Top 15%
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
7:04/mi
21:57
↑ 97↓ 3451.5%
10K· 6.21 mi
7:00/mi
43:43
↑ 79↓ 1380.4%
15K· 9.32 mi
7:02/mi
1:05:34
↑ 67↓ 78
20K· 12.43 mi
7:12/mi
1:27:56
↑ 106↓ 860.1%
Half· 13.11 mi
7:05/mi
1:32:46
↑ 19↓ 370.5%
25K· 15.53 mi
7:14/mi
1:50:19
↑ 66↓ 880.2%
30K· 18.64 mi
7:22/mi
2:13:11
↑ 181↓ 1480.2%
20M
7:27/mi
2:23:19
↑ 64↓ 500.2%
21M
7:51/mi
2:31:10
↑ 106↓ 241.6%
35K· 21.75 mi
7:09/mi
2:36:31
↑ 17↓ 861.7%
23M
7:20/mi
2:45:42
↑ 23↓ 630.6%
24M
7:17/mi
2:52:59
↓ 821.3%
40K· 24.85 mi
7:20/mi
2:59:15
↓ 200.3%
25.2M
8:07/mi
3:02:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:11/mi
3:09:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:46
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:36:36
Pace7:22 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0721:577:0421:57
7:04
-
10K
6.21 mi11:13:5343:437:0221:46
7:00
-0:04
15K
9.32 mi11:35:441:05:347:0221:51
7:02
+0:02
20K
12.43 mi11:58:061:27:567:0522:22
7:12
+0:10
Half
13.11 mi12:02:561:32:467:054:50
7:05
-0:07
25K
15.53 mi12:20:291:50:197:0617:33
7:14
+0:09
30K
18.64 mi12:43:212:13:117:0922:52
7:22
+0:08
20M
20.00 mi12:53:292:23:197:1010:08
7:27
+0:05
21M
21.00 mi13:01:202:31:107:127:51
7:51
+0:24
35K
21.75 mi13:06:412:36:317:125:21
7:09
-0:42
23M
23.00 mi13:15:522:45:427:129:11
7:20
+0:11
24M
24.00 mi13:23:092:52:597:127:17
7:17
-0:03
40K
24.85 mi13:29:252:59:157:136:16
7:20
+0:03
25.2M
25.20 mi13:32:133:02:037:132:48
8:07
+0:47
Finish
26.22 mi13:39:323:09:227:147:19
7:11
-0:56

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

7:00 /mi

Average Pace

7:14 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:58:43

94% of race

Time at Steady Pace

10:39

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:13 /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 mi10:52:0721:577:0421:57
7:04
#8357
10K
6.21 mi11:13:5343:437:0221:46
7:00
#8139
15K
9.32 mi11:35:441:05:347:0221:51
7:02
#8006
20K
12.43 mi11:58:061:27:567:0522:22
7:12
#8008
Half
13.11 mi12:02:561:32:467:054:50
7:05
#8009
25K
15.53 mi12:20:291:50:197:0617:33
7:14
#7936
30K
18.64 mi12:43:212:13:117:0922:52
7:22
#7641
20M
20.00 mi12:53:292:23:197:1010:08
7:27
#7501
21M
21.00 mi13:01:202:31:107:127:51
7:51
#7377
35K
21.75 mi13:06:412:36:317:125:21
7:09
#7294
23M
23.00 mi13:15:522:45:427:129:11
7:20
#7136
24M
24.00 mi13:23:092:52:597:127:17
7:17
#7060
40K
24.85 mi13:29:252:59:157:136:16
7:20
#6952
25.2M
25.20 mi13:32:133:02:037:132:48
8:07
#6926
Finish
26.22 mi13:39:323:09:227:147:19
7:11
#6873
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8357111411147847(Top 28%)985(Top 8%)985(Top 18%)
10K6.21 mi3.10 mi8139+2181047+671047+677964(Top 28%)989(Top 8%)989(Top 18%)
15K9.32 mi3.11 mi8006+1331001+461001+467847(Top 28%)985(Top 8%)985(Top 18%)
20K12.43 mi3.11 mi8008-21029-281029-288213(Top 29%)1188(Top 10%)1188(Top 22%)
Half13.11 mi0.68 mi8009-11026+31026+38221(Top 29%)1159(Top 9%)1159(Top 21%)
25K15.53 mi2.42 mi7936+731023+31023+37906(Top 28%)1174(Top 10%)1174(Top 21%)
30K18.64 mi3.11 mi7641+295970+53970+536821(Top 24%)942(Top 8%)942(Top 17%)
20M20.00 mi1.36 mi7501+140956+14956+146755(Top 24%)1054(Top 9%)1054(Top 19%)
21M21.00 mi1.00 mi7377+124947+9947+96518(Top 23%)1109(Top 9%)1109(Top 20%)
35K21.75 mi0.75 mi7294+83948-1948-16325(Top 22%)1033(Top 8%)1033(Top 19%)
23M23.00 mi1.25 mi7136+158935+13935+135677(Top 20%)880(Top 7%)880(Top 16%)
24M24.00 mi1.00 mi7060+76936-1936-16335(Top 22%)1193(Top 10%)1193(Top 22%)
40K24.85 mi0.85 mi6952+108928+8928+85840(Top 21%)1072(Top 9%)1072(Top 20%)
25.2M25.20 mi0.35 mi6926+26935-7935-76640(Top 23%)1468(Top 12%)1468(Top 27%)
Finish26.22 mi1.02 mi6873+53948-13948-136944(Top 24%)1621(Top 13%)1621(Top 30%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7847

Females

985

F18-39

985

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

7964

Females

989

F18-39

989

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7847

Females

985

F18-39

985

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

8213

Females

1188

F18-39

1188

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

8221

Females

1159

F18-39

1159

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7906

Females

1174

F18-39

1174

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6821

Females

942

F18-39

942

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6755

Females

1054

F18-39

1054

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6518

Females

1109

F18-39

1109

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

6325

Females

1033

F18-39

1033

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5677

Females

880

F18-39

880

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

6335

Females

1193

F18-39

1193

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5840

Females

1072

F18-39

1072

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6640

Females

1468

F18-39

1468

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6944

Females

1621

F18-39

1621

Passing Analysis

Category:
Athletes Passed
2169
Passed By
685
Net Change
+1484
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8357
5K → 10K343125+218#8357#8139
10K → 15K20269+133#8139#8006
15K → 20K140142-2#8006#8008
20K → Half2930-1#8008#8009
Half → 25K15380+73#8009#7936
25K → 30K35863+295#7936#7641
30K → 20M15919+140#7641#7501
20M → 21M14925+124#7501#7377
21M → 35K9310+83#7377#7294
35K → 23M18022+158#7294#7136
23M → 24M9923+76#7136#7060
24M → 40K12113+108#7060#6952
40K → 25.2M4317+26#6952#6926
25.2M → Finish10047+53#6926#6873
TOTALS2169685+1484
📊

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