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BOSTON MARATHON 2025

Rachel Mason

Bib: 5776•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Female)
#0 / 12228
Top 2%
Division (F18-39)
#0 / 5469
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:57
Rank: #3284
Start → 5K
19:57 | 6:25/mi
10K· 6.21 mi
40:08
Rank: #3481 (-197)
5K → 10K
20:11 | 6:30/mi
15K· 9.32 mi
1:00:28
Rank: #3610 (-129)
10K → 15K
20:20 | 6:33/mi
20K· 12.43 mi
1:21:17
Rank: #3771 (-161)
15K → 20K
20:49 | 6:42/mi
Half· 13.11 mi
1:25:45
Rank: #3783 (-12)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:41:58
Rank: #3780 (+3)
Half → 25K
16:13 | 6:41/mi
30K· 18.64 mi
2:03:38
Rank: #3847 (-67)
25K → 30K
21:40 | 6:58/mi
20M
2:13:31
Rank: #3951 (-104)
30K → 20M
9:53 | 7:16/mi
21M
2:21:28
Rank: #4115 (-164)
20M → 21M
7:57 | 7:57/mi
35K· 21.75 mi
2:26:30
Rank: #4088 (+27)
21M → 35K
5:02 | 6:44/mi
23M
2:35:11
Rank: #4005 (+83)
35K → 23M
8:41 | 6:56/mi
24M
2:41:45
Rank: #3892 (+113)
23M → 24M
6:34 | 6:34/mi
40K· 24.85 mi
2:47:36
Rank: #3821 (+71)
24M → 40K
5:51 | 6:51/mi
25.2M
2:50:12
Rank: #3800 (+21)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:57:01
Rank: #3747 (+53)
25.2M → Finish
6:49 | 6:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:45
Pace6:32 /mi
2nd Half
Distance13.11 mi
Time1:31:16
Pace6:58 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:2519:576:2519:57
6:25
-
10K
6.21 mi10:46:3640:086:2820:11
6:30
+0:05
15K
9.32 mi11:06:561:00:286:2920:20
6:33
+0:03
20K
12.43 mi11:27:451:21:176:3220:49
6:42
+0:09
Half
13.11 mi11:32:131:25:456:324:28
6:33
-0:09
25K
15.53 mi11:48:261:41:586:3416:13
6:41
+0:08
30K
18.64 mi12:10:062:03:386:3821:40
6:58
+0:17
20M
20.00 mi12:19:592:13:316:419:53
7:16
+0:18
21M
21.00 mi12:27:562:21:286:447:57
7:57
+0:41
35K
21.75 mi12:32:582:26:306:445:02
6:44
-1:13
23M
23.00 mi12:41:392:35:116:458:41
6:56
+0:12
24M
24.00 mi12:48:132:41:456:446:34
6:34
-0:22
40K
24.85 mi12:54:042:47:366:455:51
6:51
+0:17
25.2M
25.20 mi12:56:402:50:126:452:36
7:32
+0:41
Finish
26.22 mi13:03:292:57:016:456:49
6:41
-0:51

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

6:25 /mi

Average Pace

6:45 /mi

Slowest Pace

7:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

19:57

11% of race

Time at Steady Pace

1:46:17

60% of race

Time at Slower Pace

50:47

29% of race

Average Pace: 6:45 /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 mi10:26:2519:576:2519:57
6:25
#3284
10K
6.21 mi10:46:3640:086:2820:11
6:30
#3481
15K
9.32 mi11:06:561:00:286:2920:20
6:33
#3610
20K
12.43 mi11:27:451:21:176:3220:49
6:42
#3771
Half
13.11 mi11:32:131:25:456:324:28
6:33
#3783
25K
15.53 mi11:48:261:41:586:3416:13
6:41
#3780
30K
18.64 mi12:10:062:03:386:3821:40
6:58
#3847
20M
20.00 mi12:19:592:13:316:419:53
7:16
#3951
21M
21.00 mi12:27:562:21:286:447:57
7:57
#4115
35K
21.75 mi12:32:582:26:306:445:02
6:44
#4088
23M
23.00 mi12:41:392:35:116:458:41
6:56
#4005
24M
24.00 mi12:48:132:41:456:446:34
6:34
#3892
40K
24.85 mi12:54:042:47:366:455:51
6:51
#3821
25.2M
25.20 mi12:56:402:50:126:452:36
7:32
#3800
Finish
26.22 mi13:03:292:57:016:456:49
6:41
#3747
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi32841601603855(Top 14%)211(Top 2%)211(Top 4%)
10K6.21 mi3.10 mi3481-197170-10170-103710(Top 13%)203(Top 2%)203(Top 4%)
15K9.32 mi3.11 mi3610-129186-16186-163855(Top 14%)211(Top 2%)211(Top 4%)
20K12.43 mi3.11 mi3771-161205-19205-194454(Top 16%)289(Top 2%)289(Top 5%)
Half13.11 mi0.68 mi3783-12206-1206-14081(Top 14%)237(Top 2%)237(Top 4%)
25K15.53 mi2.42 mi3780+3208-2208-24066(Top 14%)267(Top 2%)267(Top 5%)
30K18.64 mi3.11 mi3847-67216-8216-84553(Top 16%)381(Top 3%)381(Top 7%)
20M20.00 mi1.36 mi3951-104232-16232-165632(Top 20%)687(Top 6%)687(Top 13%)
21M21.00 mi1.00 mi4115-164260-28260-287087(Top 25%)1331(Top 11%)1331(Top 24%)
35K21.75 mi0.75 mi4088+27264-4264-43734(Top 13%)348(Top 3%)348(Top 6%)
23M23.00 mi1.25 mi4005+83266-2266-23433(Top 12%)306(Top 3%)306(Top 6%)
24M24.00 mi1.00 mi3892+113261+5261+52378(Top 8%)173(Top 1%)173(Top 3%)
40K24.85 mi0.85 mi3821+71258+3258+33093(Top 11%)300(Top 2%)300(Top 5%)
25.2M25.20 mi0.35 mi3800+21259-1259-13652(Top 13%)454(Top 4%)454(Top 8%)
Finish26.22 mi1.02 mi3747+53258+1258+13831(Top 13%)502(Top 4%)502(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3855

Females

211

F18-39

211

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3710

Females

203

F18-39

203

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3855

Females

211

F18-39

211

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4454

Females

289

F18-39

289

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

4081

Females

237

F18-39

237

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

4066

Females

267

F18-39

267

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4553

Females

381

F18-39

381

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5632

Females

687

F18-39

687

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

7087

Females

1331

F18-39

1331

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3734

Females

348

F18-39

348

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3433

Females

306

F18-39

306

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2378

Females

173

F18-39

173

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3093

Females

300

F18-39

300

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3652

Females

454

F18-39

454

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3831

Females

502

F18-39

502

Passing Analysis

Category:
Athletes Passed
882
Passed By
1345
Net Change
-463
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3284
5K → 10K56253-197#3284#3481
10K → 15K60189-129#3481#3610
15K → 20K52213-161#3610#3771
20K → Half1224-12#3771#3783
Half → 25K8178+3#3783#3780
25K → 30K86153-67#3780#3847
30K → 20M35139-104#3847#3951
20M → 21M27191-164#3951#4115
21M → 35K5225+27#4115#4088
35K → 23M10724+83#4088#4005
23M → 24M1229+113#4005#3892
24M → 40K809+71#3892#3821
40K → 25.2M298+21#3821#3800
25.2M → Finish8330+53#3800#3747
TOTALS8821345-463
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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