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SF MARATHON 1ST HALF 2026

Jonathan Lai

Bib: 19507•M•Age: 26

Sunnyvale, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Gender (Male)
#0 / 3619
Division (M25-29)
#0 / 796
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
11:27/mi
22:54
→ flat
4M
11:27/mi
45:48
↑ 67↓ 69
6M
11:35/mi
1:08:58
↑ 1231.1%
8M
12:56/mi
1:34:51
↑ 166↓ 531.1%
9.6M
8:58/mi
1:49:12
↑ 68↓ 1931.5%
10M
27:04/mi
2:00:01
↓ 241.1%
10.5M
5:16/mi
2:02:39
↓ 732.7%
12M
17:07/mi
2:28:20
↑ 2803.2%
Finish· 13.11 mi
12:59/mi
2:42:44
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:08:58
Pace11:30 /mi
2nd Half
Distance7.11 mi
Time1:33:46
Pace13:11 /mi
📊Positive Split: 36.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:12:2822:5411:2722:54
11:27
-
4M
4.00 mi07:35:2245:4811:2722:54
11:27
0:00
6M
6.00 mi07:58:321:08:5811:3023:10
11:35
+0:08
8M
8.00 mi08:24:251:34:5111:5125:53
12:56
+1:21
9.6M
9.60 mi08:38:461:49:1211:2214:21
8:58
-3:58
10M
10.00 mi08:49:352:00:0112:0010:49
27:04
+18:06
10.5M
10.50 mi08:52:132:02:3911:412:38
5:16
-21:48
12M
12.00 mi09:17:542:28:2012:2225:41
17:07
+11:51
Finish
13.11 mi09:32:182:42:4412:2514:24
12:59
-4:08

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

5:16 /mi

Average Pace

12:25 /mi

Slowest Pace

27:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38

2% of race

Time at Steady Pace

2:03:36

76% of race

Time at Slower Pace

36:30

22% of race

Average Pace: 12:25 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi07:12:2822:5411:2722:54
11:27
#5367
4M
4.00 mi07:35:2245:4811:2722:54
11:27
#5099
6M
6.00 mi07:58:321:08:5811:3023:10
11:35
#4899
8M
8.00 mi08:24:251:34:5111:5125:53
12:56
#5060
9.6M
9.60 mi08:38:461:49:1211:2214:21
8:58
#4685
10M
10.00 mi08:49:352:00:0112:0010:49
27:04
#4917
10.5M
10.50 mi08:52:132:02:3911:412:38
5:16
#4890
12M
12.00 mi09:17:542:28:2012:2225:41
17:07
#4901
Finish
13.11 mi09:32:182:42:4412:2514:24
12:59
#4965
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 87%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

13:27

Segment Time

14:57/mi

Pace

0.90 mi

Distance

Overall

5746

Men

3272

Division

738

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
2M2.00 mi2.00 mi536731857154921(Top 75%)2891(Top 80%)654(Top 82%)
4M4.00 mi2.00 mi5099+2683078+107696+194793(Top 73%)2929(Top 81%)672(Top 84%)
6M6.00 mi2.00 mi4899+2003001+77691+54608(Top 70%)2870(Top 79%)666(Top 84%)
8M8.00 mi2.00 mi5060-1613087-86704-135392(Top 82%)3211(Top 89%)723(Top 91%)
9.6M9.60 mi1.60 mi4685+3752901+186663+412700(Top 41%)1716(Top 47%)408(Top 51%)
10M10.00 mi0.40 mi4917-2323005-104682-196033(Top 92%)3384(Top 94%)754(Top 95%)
10.5M10.50 mi0.50 mi4890+272988+17679+33856(Top 59%)2466(Top 68%)578(Top 73%)
12M12.00 mi1.50 mi4901-112973+15678+14921(Top 75%)2891(Top 80%)654(Top 82%)
Finish13.11 mi1.11 mi4965-642992-19683-55550(Top 84%)3154(Top 87%)707(Top 89%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 75%
~flat
+5ft-3ft

Overall

4921

Males

2891

M25-29

655

2M→4M

2.0 - 4.0 mi

Top 73%
×4story building
+67ft-69ft

Overall

4793

Males

2929

M25-29

674

4M→6M

4.0 - 6.0 mi

Top 70%
×9story building
+123ft-9ft

Overall

4608

Males

2870

M25-29

668

6M→8M

6.0 - 8.0 mi

Top 82%
×12story building
+166ft-53ft

Overall

5392

Males

3211

M25-29

724

8M→9.6M

8.0 - 9.6 mi

Top 41%
×13story building
+68ft-193ft

Overall

2700

Males

1716

M25-29

409

9.6M→10M

9.6 - 10.0 mi

Top 92%
×2story building
+0ft-24ft

Overall

6033

Males

3384

M25-29

755

10M→10.5M

10.0 - 10.5 mi

Top 59%
×6story building
+1ft-73ft

Overall

3856

Males

2466

M25-29

579

10.5M→12M

10.5 - 12.0 mi

Top 75%
×21story building
+280ft-26ft

Overall

4921

Males

2891

M25-29

655

12M→Finish

12.0 - 13.1 mi

Top 84%
×7story building
+14ft-89ft

Overall

5550

Males

3154

M25-29

707

Passing Analysis

Category:
Athletes Passed
1184*
Passed By
782
Net Change
+402
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#5367
2M → 4M31749+268#5367#5099
4M → 6M244*44+200#5099#4899
6M → 8M64*225-161#4899#5060
8M → 9.6M39419+375#5060#4685
9.6M → 10M8240-232#4685#4917
10M → 10.5M292+27#4917#4890
10.5M → 12M86*97-11#4890#4901
12M → Finish42*106-64#4901#4965
TOTALS1184*782+402

* 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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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events