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BOSTON MARATHON 2025

Briannon Collins

Bib: 26103•F

NH

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
10:54/mi
33:53
↑ 97↓ 3451.5%
10K· 6.21 mi
11:01/mi
1:08:08
↑ 79↓ 1380.4%
15K· 9.32 mi
12:09/mi
1:45:53
↑ 67↓ 78
20K· 12.43 mi
11:21/mi
2:21:10
↑ 106↓ 860.1%
Half· 13.11 mi
10:54/mi
2:28:36
↑ 19↓ 370.5%
25K· 15.53 mi
12:17/mi
2:58:23
↑ 66↓ 880.2%
30K· 18.64 mi
13:43/mi
3:41:00
↑ 181↓ 1480.2%
20M
12:26/mi
3:57:54
↑ 64↓ 500.2%
21M
15:03/mi
4:12:57
↑ 106↓ 241.6%
35K· 21.75 mi
12:22/mi
4:22:12
↑ 17↓ 861.7%
23M
12:16/mi
4:37:34
↑ 23↓ 630.6%
24M
13:03/mi
4:50:37
↓ 821.3%
40K· 24.85 mi
14:52/mi
5:03:20
↓ 200.3%
25.2M
14:13/mi
5:08:14
↑ 13↓ 160.2%
Finish· 26.22 mi
19:13/mi
5:27:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:28:36
Pace11:20 /mi
2nd Half
Distance13.11 mi
Time2:59:13
Pace13:40 /mi
📊Positive Split: 20.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:58:2133:5310:5433:53
10:54
-
10K
6.21 mi12:32:361:08:0810:5834:15
11:01
+0:07
15K
9.32 mi13:10:211:45:5311:2237:45
12:09
+1:08
20K
12.43 mi13:45:382:21:1011:2235:17
11:21
-0:48
Half
13.11 mi13:53:042:28:3611:207:26
10:54
-0:27
25K
15.53 mi14:22:512:58:2311:2929:47
12:17
+1:23
30K
18.64 mi15:05:283:41:0011:5142:37
13:43
+1:26
20M
20.00 mi15:22:223:57:5411:5416:54
12:26
-1:17
21M
21.00 mi15:37:254:12:5712:0315:03
15:03
+2:37
35K
21.75 mi15:46:404:22:1212:039:15
12:22
-2:41
23M
23.00 mi16:02:024:37:3412:0415:22
12:16
-0:06
24M
24.00 mi16:15:054:50:3712:0713:03
13:03
+0:47
40K
24.85 mi16:27:485:03:2012:1212:43
14:52
+1:49
25.2M
25.20 mi16:32:425:08:1412:144:54
14:13
-0:39
Finish
26.22 mi16:52:175:27:4912:3119:35
19:13
+5:00

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

10:54 /mi

Average Pace

12:31 /mi

Slowest Pace

19:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:34

23% of race

Time at Steady Pace

2:37:23

48% of race

Time at Slower Pace

1:34:52

29% of race

Average Pace: 12:30 /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 mi11:58:2133:5310:5433:53
10:54
#27445
10K
6.21 mi12:32:361:08:0810:5834:15
11:01
#27267
15K
9.32 mi13:10:211:45:5311:2237:45
12:09
#27502
20K
12.43 mi13:45:382:21:1011:2235:17
11:21
#27227
Half
13.11 mi13:53:042:28:3611:207:26
10:54
#27188
25K
15.53 mi14:22:512:58:2311:2929:47
12:17
#27106
30K
18.64 mi15:05:283:41:0011:5142:37
13:43
#27148
20M
20.00 mi15:22:223:57:5411:5416:54
12:26
#27083
21M
21.00 mi15:37:254:12:5712:0315:03
15:03
#27106
35K
21.75 mi15:46:404:22:1212:039:15
12:22
#27084
23M
23.00 mi16:02:024:37:3412:0415:22
12:16
#27032
24M
24.00 mi16:15:054:50:3712:0713:03
13:03
#27037
40K
24.85 mi16:27:485:03:2012:1212:43
14:52
#27083
25.2M
25.20 mi16:32:425:08:1412:144:54
14:13
#27081
Finish
26.22 mi16:52:175:27:4912:3119:35
19:13
#27351
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27445116071160727727(Top 98%)11816(Top 97%)11816(Top 216%)
10K6.21 mi3.10 mi27267+17811515+9211515+9227090(Top 95%)11416(Top 93%)11416(Top 209%)
15K9.32 mi3.11 mi27502-23511658-14311658-14327727(Top 98%)11816(Top 97%)11816(Top 216%)
20K12.43 mi3.11 mi27227+27511497+16111497+16126459(Top 93%)11075(Top 91%)11075(Top 203%)
Half13.11 mi0.68 mi27188+3911479+1811479+1826367(Top 93%)11043(Top 90%)11043(Top 202%)
25K15.53 mi2.42 mi27106+8211444+3511444+3526738(Top 94%)11278(Top 92%)11278(Top 206%)
30K18.64 mi3.11 mi27148-4211487-4311487-4327296(Top 96%)11657(Top 95%)11657(Top 213%)
20M20.00 mi1.36 mi27083+6511454+3311454+3325835(Top 91%)10924(Top 89%)10924(Top 200%)
21M21.00 mi1.00 mi27106-2311477-2311477-2327185(Top 96%)11665(Top 95%)11665(Top 213%)
35K21.75 mi0.75 mi27084+2211466+1111466+1126305(Top 93%)11244(Top 92%)11244(Top 206%)
23M23.00 mi1.25 mi27032+5211446+2011446+2025497(Top 90%)10861(Top 89%)10861(Top 199%)
24M24.00 mi1.00 mi27037-511457-1111457-1126906(Top 95%)11591(Top 95%)11591(Top 212%)
40K24.85 mi0.85 mi27083-4611488-3111488-3127713(Top 98%)11975(Top 98%)11975(Top 219%)
25.2M25.20 mi0.35 mi27081+211493-511493-526469(Top 93%)11422(Top 93%)11422(Top 209%)
Finish26.22 mi1.02 mi27351-27011645-15211645-15228389(Top 100%)12222(Top 100%)12222(Top 223%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21story building
+97ft-345ft

Overall

27727

Females

11816

F18-39

11816

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

27090

Females

11416

F18-39

11416

10K→15K

6.2 - 9.3 mi

Top 98%
×3story building
+67ft-78ft

Overall

27727

Females

11816

F18-39

11816

15K→20K

9.3 - 12.4 mi

Top 93%
×5story building
+106ft-86ft

Overall

26459

Females

11075

F18-39

11075

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

26367

Females

11043

F18-39

11043

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

26738

Females

11278

F18-39

11278

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

27296

Females

11657

F18-39

11657

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

25835

Females

10924

F18-39

10924

20M→21M

20.0 - 21.0 mi

Top 96%
×8story building
+106ft-24ft

Overall

27185

Females

11665

F18-39

11665

21M→35K

21.0 - 21.8 mi

Top 93%
×7story building
+17ft-86ft

Overall

26305

Females

11244

F18-39

11244

35K→23M

21.8 - 23.0 mi

Top 90%
×5story building
+23ft-63ft

Overall

25497

Females

10861

F18-39

10861

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

26906

Females

11591

F18-39

11591

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

27713

Females

11975

F18-39

11975

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26469

Females

11422

F18-39

11422

25.2M→Finish

25.2 - 26.2 mi

Top 100%
×2story building
+22ft-21ft

Overall

28389

Females

12222

F18-39

12222

Passing Analysis

Category:
Athletes Passed
969
Passed By
875
Net Change
+94
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27445
5K → 10K22648+178#27445#27267
10K → 15K35270-235#27267#27502
15K → 20K2805+275#27502#27227
20K → Half445+39#27227#27188
Half → 25K11028+82#27188#27106
25K → 30K66108-42#27106#27148
30K → 20M705+65#27148#27083
20M → 21M1639-23#27083#27106
21M → 35K264+22#27106#27084
35K → 23M553+52#27084#27032
23M → 24M1722-5#27032#27037
24M → 40K1258-46#27037#27083
40K → 25.2M119+2#27083#27081
25.2M → Finish1271-270#27081#27351
TOTALS969875+94
📊

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