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BOSTON MARATHON 2025

Shannon Bolter

Bib: 16153•F

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 18%
Division (F18-39)
#0 / 5469
Top 32%
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
7:19/mi
22:44
↑ 97↓ 3451.5%
10K· 6.21 mi
7:15/mi
45:17
↑ 79↓ 1380.4%
15K· 9.32 mi
7:19/mi
1:08:01
↑ 67↓ 78
20K· 12.43 mi
7:23/mi
1:30:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:12/mi
1:35:53
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:53:58
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:18:30
↑ 181↓ 1480.2%
20M
8:04/mi
2:29:28
↑ 64↓ 500.2%
21M
9:11/mi
2:38:39
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:44:10
↑ 17↓ 861.7%
23M
7:54/mi
2:54:03
↑ 23↓ 630.6%
24M
7:40/mi
3:01:43
↓ 821.3%
40K· 24.85 mi
7:57/mi
3:08:31
↓ 200.3%
25.2M
9:40/mi
3:11:51
↑ 13↓ 160.2%
Finish· 26.22 mi
7:22/mi
3:19:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:53
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:43:28
Pace7:54 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:0122:447:1922:44
7:19
-
10K
6.21 mi11:18:3445:177:1722:33
7:15
-0:04
15K
9.32 mi11:41:181:08:017:1822:44
7:19
+0:04
20K
12.43 mi12:04:151:30:587:1922:57
7:23
+0:04
Half
13.11 mi12:09:101:35:537:194:55
7:12
-0:11
25K
15.53 mi12:27:151:53:587:2018:05
7:27
+0:15
30K
18.64 mi12:51:472:18:307:2624:32
7:54
+0:27
20M
20.00 mi13:02:452:29:287:2810:58
8:04
+0:10
21M
21.00 mi13:11:562:38:397:339:11
9:11
+1:07
35K
21.75 mi13:17:272:44:107:335:31
7:22
-1:49
23M
23.00 mi13:27:202:54:037:349:53
7:54
+0:32
24M
24.00 mi13:35:003:01:437:347:40
7:40
-0:14
40K
24.85 mi13:41:483:08:317:356:48
7:57
+0:17
25.2M
25.20 mi13:45:083:11:517:373:20
9:40
+1:43
Finish
26.22 mi13:52:383:19:217:377:30
7:22
-2:18

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

7:12 /mi

Average Pace

7:37 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:14:39

68% of race

Time at Slower Pace

1:04:42

32% of race

Average Pace: 7:36 /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 mi10:56:0122:447:1922:44
7:19
#10551
10K
6.21 mi11:18:3445:177:1722:33
7:15
#10246
15K
9.32 mi11:41:181:08:017:1822:44
7:19
#10192
20K
12.43 mi12:04:151:30:587:1922:57
7:23
#10047
Half
13.11 mi12:09:101:35:537:194:55
7:12
#10000
25K
15.53 mi12:27:151:53:587:2018:05
7:27
#9881
30K
18.64 mi12:51:472:18:307:2624:32
7:54
#9963
20M
20.00 mi13:02:452:29:287:2810:58
8:04
#9988
21M
21.00 mi13:11:562:38:397:339:11
9:11
#10284
35K
21.75 mi13:17:272:44:107:335:31
7:22
#10171
23M
23.00 mi13:27:202:54:037:349:53
7:54
#10081
24M
24.00 mi13:35:003:01:437:347:40
7:40
#10001
40K
24.85 mi13:41:483:08:317:356:48
7:57
#9945
25.2M
25.20 mi13:45:083:11:517:373:20
9:40
#10054
Finish
26.22 mi13:52:383:19:217:377:30
7:22
#9951
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi105512059205910141(Top 36%)1949(Top 16%)1949(Top 36%)
10K6.21 mi3.10 mi10246+3051929+1301929+1309997(Top 35%)1829(Top 15%)1829(Top 33%)
15K9.32 mi3.11 mi10192+541930-11930-110141(Top 36%)1949(Top 16%)1949(Top 36%)
20K12.43 mi3.11 mi10047+1451892+381892+389807(Top 35%)1878(Top 15%)1878(Top 34%)
Half13.11 mi0.68 mi10000+471873+191873+199221(Top 32%)1606(Top 13%)1606(Top 29%)
25K15.53 mi2.42 mi9881+1191850+231850+239637(Top 34%)1950(Top 16%)1950(Top 36%)
30K18.64 mi3.11 mi9963-821938-881938-8810609(Top 37%)2598(Top 21%)2598(Top 48%)
20M20.00 mi1.36 mi9988-251981-431981-4310901(Top 38%)2888(Top 24%)2888(Top 53%)
21M21.00 mi1.00 mi10284-2962179-1982179-19814535(Top 51%)4901(Top 40%)4901(Top 90%)
35K21.75 mi0.75 mi10171+1132147+322147+327789(Top 27%)1612(Top 13%)1612(Top 29%)
23M23.00 mi1.25 mi10081+902144+32144+39259(Top 33%)2375(Top 19%)2375(Top 43%)
24M24.00 mi1.00 mi10001+802146-22146-28925(Top 31%)2288(Top 19%)2288(Top 42%)
40K24.85 mi0.85 mi9945+562150-42150-49871(Top 35%)2851(Top 23%)2851(Top 52%)
25.2M25.20 mi0.35 mi10054-1092221-712221-7115442(Top 54%)5766(Top 47%)5766(Top 105%)
Finish26.22 mi1.02 mi9951+1032197+242197+248230(Top 29%)2166(Top 18%)2166(Top 40%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

10141

Females

1949

F18-39

1949

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9997

Females

1829

F18-39

1829

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

10141

Females

1949

F18-39

1949

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9807

Females

1878

F18-39

1878

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

9221

Females

1606

F18-39

1606

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9637

Females

1950

F18-39

1950

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

10609

Females

2598

F18-39

2598

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10901

Females

2888

F18-39

2888

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14535

Females

4901

F18-39

4901

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7789

Females

1612

F18-39

1612

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

9259

Females

2375

F18-39

2375

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8925

Females

2288

F18-39

2288

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9871

Females

2851

F18-39

2851

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15442

Females

5766

F18-39

5766

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

8230

Females

2166

F18-39

2166

Passing Analysis

Category:
Athletes Passed
2105*
Passed By
1498
Net Change
+600
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10551
5K → 10K431126+305#10551#10246
10K → 15K197143+54#10246#10192
15K → 20K24599+145#10192#10047
20K → Half6215+47#10047#10000
Half → 25K201*82+119#10000#9881
25K → 30K201283-82#9881#9963
30K → 20M112136-25#9963#9988
20M → 21M32326-296#9988#10284
21M → 35K12411+113#10284#10171
35K → 23M14656+90#10171#10081
23M → 24M11938+80#10081#10001
24M → 40K9640+56#10001#9945
40K → 25.2M15122-109#9945#10054
25.2M → Finish124*21+103#10054#9951
TOTALS2105*1498+600

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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